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Côte Sauvage Presqu'île de Quiberon
Projection: Cylindrical (1)
FOV: 134 x 89
Ev: -0,33
20230422_131404_064-20230422_132525_075_v2_K+
Motor monocilíndrico de cuatro tiempos refrigerado por agua, 3 CV (2 kW), velocidad: aprox. 20 kilómetros por hora
de.wikipedia.org/wiki/Benz_%26_Cie.
mercedes-benz-publicarchive.com/marsClassic/en/instance/k...
Museo de la técnica Viena (Austria) 30/12/2023.
The Birte Selmer, a bulk ship registered in Majuro (where is that I hear you say) taking on a cargo of grain like product (perhaps chick peas or soya bean for instance) at the former bulk sugar terminal at suburban Colmslie on the Brisbane River, Queensland. In the background can be seen the two massive Gateway (or more correctly Sir Leo Hielscher) Bridges. You may notice that even though this location is a fair way up the river from the mouth, there is a small beach which is adjacent to a large park. There are several of these "beaches" on either side of the river along this reach but not used for swimming as such. The river is far cleaner these days but it does harbour rather nasty bull sharks which tend to be reasonably aggressive with big teeth!
The ship is loading by its own cranes rather than the conveyor/crane system which was designed for raw sugar and partly dismantled I believe. Imagine evacuating on that life boat at the stern of the ship!!
Now...where is Majuro? Well, I can tell you that it's on a tiny atoll like island in the Marshall Islands in the Pacific....definitely a place and flag of convenience. So firstly, a little bit about Majuro then after that, a bit about the ship.
Majuro (/ˈmædʒəroʊ/; Marshallese: Mājro [mʲæzʲ(e)rˠo] is the capital and largest city of the Marshall Islands. It is also a large coral atoll of 64 islands in the Pacific Ocean. It forms a legislative district of the Ratak (Sunrise) Chain of the Marshall Islands. The atoll has a land area of 9.7 square kilometres (3.7 sq mi) and encloses a lagoon of 295 square kilometres (114 sq mi). As with other atolls in the Marshall Islands, Majuro consists of narrow land masses. It has a tropical trade wind climate, with an average temperature of 27 °C (81 °F). You can read more on Wikipedia. It may be a beautiful place but it is definitely no ship base as such!
Now the ship!
The Birte Selmer was built in 2011 as a bulk ship and is registered in the Marshall Islands (see above). It arrived in Brisbane on 27 January 2021.
Gross Tonnage23432
Summer Deadweight (t)33660
More can be found on the internet ship tracking sites.
Stieglitz would never say that certain objects of the world were more or less beautiful than others-telegraph poles, for instance, compared with oak trees. He would accept them for what they are, and use the most appropriate objects to express his thoughts and convey his vision.
～Ansel Adams
P.S. Non-HDR / Non-GND-filtered / 黑卡作品
NEW JERSEY 2017 BALD EAGLE PROJECT REPORT
ANOTHER PRODUCTIVE YEAR FOR NJ’S EAGLES
by Larissa Smith, CWF Wildlife Biologist
The Conserve Wildlife Foundation of NJ in partnership with the NJ Endangered and Nongame Species Program has released the 2017 NJ Bald Eagle Project Report. In 2017, 178 eagle nests were monitored during the nesting season. Of these nests 153 were active (with eggs) and 25 were territorial or housekeeping pairs. One hundred and ninety young were fledged.
In 2017 the number of active nests was three more than in 2016, but the number young fledged decreased by 27 from a record high of 216 fledged in 2016. The productivity rate this season of 1.25 young/active nest is still above the required range of 0.0 to 1.1 for population maintenance. Productivity could be lower this season for many reasons including weather, predation and disturbance to the nesting area. In 2017 nest monitors reported several instances of “intruder” eagles at nests which did disrupt the nesting attempts of several pairs. One of these “eagle dramas” unfolded at the Duke Farms eagle cam watched by millions of people. An intruder female attempted to replace the current female. This harassment interrupted the pairs bonding and copulation and no eggs were laid.
This year’s report includes a section on Resightings of banded eagles. Resightings of NJ (green) banded eagles have increased over the years, as well as eagles seen in NJ that were banded in other states. These resightings are important, as they help us to understand eagle movements during the years between fledging and settling into a territory, as well as adult birds at a nest site.
For more info: www.conservewildlifenj.org/blog/2017/12/06/new-jersey-201...
New Jersey Bald Eagle Project Report | 2017 may be downloaded here: www.state.nj.us/dep/fgw/ensp/pdf/eglrpt17.pdf
My inspiration song for this pictur:
SCHAMANISCHES Tribal Drum Journey
Message for you:
Even when the wolf sometimes disappears deep into the forest, he always finds his way back home. May the power animal Wolf guide and lead you because in the last instance we will always follow the call of our soul.
Together we go our Soul Path the Queen of Swords and the Wolf as companions you will meet again and again and strengthen each other's backs because that is the deal and the goal.
Botschaft für dich:
Auch wenn der Wolf manchmal tief im Wald verschwindet findet er immer wieder den Weg nach Hause zurück. Möge das Krafttier Wolf dich leiten und führen, denn in letzter Instanz werden wir immer dem Ruf unserer Seele folgen.
Gemeinsam gehen wir unseren Seelenweg, die Königin der Schwerter und der Wolf als Gefährten werden sie sich immer wieder begegnen und sich gegenseitig den Rücken stärken denn das ist der Deal und das Ziel.
How we see echother:
Ich und Du - Anna Depenbusch & Mark Forster
Egzod & Maestro Chives - Royalty
Sam Tinnesz - Leading The Pack
Valley Of Wolves - Take It All
Soul Mates enter your life some stay for just one page others for a whole chapter and then there are those who are there for the whole story.♥
Since we have met each other I have always seen us as very polarizing and as strong personalities, two alphas who respect each other even if we sometimes snarl at each other.
Like the Bremerstadt musicians we couldn't be more different but we are connected from cradle to grave by a strong bond.
We are there for each other come what may and YES come what may.
We are never alone on the path we each take. I was allowed to grow on and with you and that is incredibly valuable to me. ♥
We know each other for what feels like an eternity now and I am incredibly grateful that you are a part of my life. You make my life more colorful and even more worth living.♥
Thank you for being exactly the way you are because in my eyes you shine in all your facets and it is pure joy to be able to experience this. Friends like us are very rare and I appreciate this gift very much.♥ Together we accompany each other on our way and Yes I am proud to have a friend like you at my side!
I am glad that you wash my head from time to time ^^ and still let me be who I am. ♥
You strengthen me and give me the courage to handle everything because you simply believe in me, thank you for that. ♥♥♥♥♥
Thank you for all the emotional and wonderful moments I was able to experience with you, whether good or bad, both are part of it. ♥
I have found my best friend in you because you are friend and girlfriend in one what could I wish for more ^^
Love you my BBF Friends for Ever SL & RL ♥
Seelen Gefährten treten in dein Leben einige bleiben für nur eine Seite andere für ein ganzes Kapitel und dann gibt es noch die die während der ganzen Geschichte dabei sind.♥
Seit wir uns getroffen haben, habe ich uns immer als sehr polarisierende und starke Persönlichkeiten gesehen zwei Alphas die sich gegenseitig respektieren, auch wenn wir uns manchmal anknurren.
Wie die Bremerstadtmusikannten könnten wir unterschielicher nicht sein und dennoch verbindet uns ein starkes Band denn von der Wiege bis zur Bare sind wir alle miteinander verbunden.
Wir sind für einander da komme was wolle und JA wolle was da komme.
Überwegs auf dem jeweiligen Weg den jeder einschlägt sind wir nie alleine. Ich durfte an und mit dir wachsen und das ist mir wahnsinnig viel wert.♥
Wir kennen uns nun schon eine gefühlte Ewichkeit und ich bin unglaublich dankbar das du ein Teil meines Lebens bist. Du machst mein Leben bunter und noch lebenswerter.♥
Danke das du genau so bist wie du bist den den in meinen Augen strahlst du in all deinen Facetten und es ist die Pure Freude das miterleben zu dürfen. Freunde wie wir es sind sind sehr selten und ich weiss dieses Geschenk sehr zu schätzen.♥ Gemeinsam begleiten wir uns auf unserem Weg und Yes ich bin stoltz einen Freund wie dich an meiner Siete zu haben!
Ich bin froh das du mir ab und an den Kopf wäschst ^^ und mich dennoch so sein lässt wie ich bin. ♥
Du stärkst mich und gibst mir den Mut alles in Agriff zu nehmen weil du einfach an mich Glaubst danke dafür. ♥♥♥♥♥
Danke für all die Emotionalen und wundervollen Momente die ich mit dir erleben durfte ob nun gut oder schlecht beides gehört dazu. ♥
Ich habe in dir meinen besten Freund gefunden denn du bist Freund und Freundin in einem was will man mehr ^^
Love you mein Bester Friends for Ever SL & RL ♥
To listen Carla Bruni "Quelqu'un m'a dit" youtu.be/XvyMG0z0FZY
It's only when you're flying above it that you realize how incredible the Earth really is.
Philippe Perrin.
Ultralight aircraft.
Ultralights are very light weight single seat aircraft used for sport and recreation. They fly “low and slow” during the day and good weather conditions.
Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1 or 2 seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional 3-axis control aircraft with ailerons, elevator and rudder, calling the former "microlight" and the latter "ultralight".
During the late 1970s and early 1980s, mostly stimulated by the hang gliding movement, many people sought affordable powered flight. As a result, many aviation authorities set up definitions of lightweight, slow-flying aeroplanes that could be subject to minimum regulations. The resulting aeroplanes are commonly called "ultralight aircraft" or "microlights", although the weight and speed limits differ from country to country. In Europe the sporting (FAI) definition limits the maximum take-off weight to 450 kg (992 lb) (472.5 kg (1,042 lb) if a ballistic parachute is installed) and a maximum stalling speed of 65 km/h (40 mph). The definition means that the aircraft has a slow landing speed and short landing roll in the event of an engine failure.
In most affluent countries, microlights or ultralight aircraft now account for a significant percentage of the global civilian-owned aircraft. For instance in Canada in October 2010, the ultralight aircraft fleet made up to 19% of the total civilian aircraft registered. In other countries that do not register ultralight aircraft, like the United States, it is unknown what proportion of the total fleet they make up. In countries where there is no specific extra regulation, ultralights are considered regular aircraft and subject to certification requirements for both aircraft and pilot.
Oxnard. California.
Stockholm's Gamla Stan is almost custom built for portrait backgrounds - narrow alleyways with slight curves and high buildings helping to give an even light across wider spreads of backdrop than often afforded to the photographer.
Lars is a Stockholm native since 1938, and was able to fill me in on some of their stories. This one is Prästgatan, which features in a number of folk songs. He also noted the changes over his time here - sadly tinged with the same trends as so many places; one can't leave a door unlocked any more, for instance.
Picking his way through the dense crowds attracted to the city centre by the "Vattenfall World Triathlon Stockholm 2014", Lars had struck me both for his meditative, intelligent gaze and his angelic white glow. In the shadows of the alleyway I'd test shot for a background, I hoped he would offer enough contrast to claim centre stage, and have the presence to justify it! In the shot we used just the sunfire (gold/silver striped) reflector with a -2 stop pop of fill flash from an on camera softbox. Together, as the softbox is so high, I find you end up with a kind of guerrilla clam shell light set-up. It's maybe not the most masculine lighting set up, but I think it does a good job of giving lars and his chic blazer an even pop of highlight against the darker alleyway.
Often I would clone out the bokeh highlight behind him, but in this case it felt appropriate - a sort of "light bulb moment" look to it, in keeping with Lars' quick intelligence.
He's a psychotherapist, and we talked about his work. He also showed me a book he'd picked up that morning; Death Of A Hero. It discusses the role of men in the modern world, in the light of recent trends in popular culture. Man, Lar notes, now graces our screens generally as an oaf, as a sports obsessed, greedy, lager craving beast. That's not to say that the portrayal of women has ever been adequately fair, he explains, just that the recent trend is aggressively pushed and men are left confused, challenged and in danger of losing their identity in the face of the media onslaught. It was a very interesting angle on the world to have explained with Lars' methodical intelligence and understated passion.
It's worth noting that world class cyclists were whizzing past us, about three metres in front of Lars, as we shot this. How on earth he maintains his serenity and focus, I don't know!
Lars - Thank you so much for your time. I hope you caught up with the rest of your party and like your portrait. Tack!
This is portrait #65 of my 100 Strangers Project - check out the group page and get involved.
Finally, I'm now live on Facebook; www.facebook.com/Flatworldsedge
On Sunday went to an early morning Swapmeet and afterwards inspected the fine display of classic cars that extended the length of Coolangatta. What really stood out for me is just how much an influence flight was in car design and branding symbology as shown on this Chevrolet. BTW, have been including GPS locations in some of my latest pictures detailed in the EXIF data. Sometimes it shows above sea level and/or altitude which in this instance was 58m. Given that Coolangatta lies pretty well on the beach and not on a cliff I would say this inaccurate.
This is another instance of persistence paying off. On my last night at the badlands I went out and had a bunch of problems with my intervalometer failing which resulted in a lot of wasted time. I finally got things going right before sunrise.
Image is a composite of about 50 photos to produce the trails. That resulted in some strange artifacts in the sunrise portion of the sky so the image was then blended with one towards the end of the series.
The Geirangerfjord is a fjord in the Sunnmøre region of Møre og Romsdal county in Norway. It is in the municipality of Stranda. It is a 15-kilometre long branch of the Storfjord. The small village of Geiranger is located at the end of the fjord where the Geirangelva river empties into it.
The fjord is one of Norway's most visited tourist sites and has been listed as a UNESCO World Heritage Site, jointly with Nærøyfjord, since 2005, although this status is now threatened by the disputed plans to build power lines across the fjord. A car ferry, which doubles as a sightseeing trip, is operated by Fjord1 Nordvestlandske. It runs lengthwise along the fjord between the small towns of Geiranger and Hellesylt.
Along the fjord's sides there lie a number of now abandoned farms. Some restoration has been made by the Storfjordens venner association. The most commonly visited among these are Skageflå, Knivsflå, and Blomberg. Skageflå may also be reached on foot from Geiranger, while the others require a boat excursion. The fjord is also host to several impressive waterfalls.
The two most notable waterfalls in the Geirangerfjord are the Seven Sisters and the Suitor (also called The Friar). The two falls face one another across the fjord, and the Suitor is said to be trying to woo the sisters opposite.
The Bridal Veil is another waterfall in the fjord, so named because it falls delicately over one rocky edge, and when seen backlit by the sun it has the appearance of a thin veil over the rocks.
This HDR picture is taken from the famous Ørnevegen (Eagle's Road), a hairpin curved road which leads into Geiranger. The boat that is anchored there is the Albatros, owned by Phoenix Reisen GmbH and sailing under the flag of the Bahamas. It's factsheet says it measurements are 205 m length by 25 m wide. To give an impression of how large this fjord is, look at other pictures of this boat (for instance on marinetraffic.com)
There were a few instances when I began to wonder if this particular box needed an air traffic controller !
There were so many birds around it that getting several in the shot at one time was not too difficult especially if I backed off on the telephoto a bit. But getting them in the same focal plane was tricky and most often when it occurred it was pure luck.
Another effort with my Ricoh 50mm: lens wide open at f2 and in this instance trying to provoke some flare, as this is one the lens's talents...I don't think I caught much...
[DSC_4590b]
Duality - (noun) 2. an instance of opposition or contrast between two concepts or two aspects of something; a dualism.
I originally posted this to my IG account which I have since deleted. The background as well as the crow are from morgueFile, the bench was a creative commons image courtesy of dodsport (they have since deleted their Flickr account) and I believe the dove is also a creative commons image.
BNSF typically runs its manifests on the Moffat in a 3x2 configuration (three units on the point, two DPUs on the end). This particular instance of the train does have five units, but it is setup in a 4x1 configuration.
©2024 ColoradoRailfan.com
It's strange how you see your work, and how you feel most comfortable with it... for instance, I never seem to like my photos in black and white, and I never seem to like them in portrait. Still, I hope you do!
My final artwork and everything has to be in in three weeks time. That'll be it. Finito. Samoosh. No more photoshopping for marks or grades. The last assessment I'll have in my photographic 'career' unless I change my mind and go back to it one day. Taking photos will be purely for fun, for flickr, and for me. Not for the examiner, whom I pray just gives me an A.
Scary stuff.
It's round about my second flickr birthday, I shall have to celebrate.
Cake, maybe? x
This is a REAL instance of ice and not the Trump ICE lockup for migrants and kids in Denver. A while back, I grabbed more Clover Basin ditch shots down at Willow Farm so I hauled my D700 back down even though the sky was blank blue. I therefore had no choice but to point the camera downward for captures and keep the sky from the shots. Just like today and tomorrow and tomorrow! I decided that I needed some better originals to edit! I liked this view as well as the other. I got few real duds in my "action" takes of the ditch but I do have several NORMAL shots of the ditch now (they call it Willow Brook) but I call it a ditch. It's not much of one either. Let's face it, most of the St. Vrain stream flows have been ripped by the city to water blue grass instead of agriculture.
I can't figure why anyone would cut a ditch this darn squirrely. When I first saw it, It was nearly impossible to follow the reasoning for this ditch but it does seem that the floods scoured this ditch somewhat. I think I noticed the colors of the reflections and contrasts and decided to take advantage. They seemed to over-saturate in this case but that's about everything posted on Flickr. The water course was a bit torn up but there must have been no serious flooding here.
We hit the end of autumn then and the chills came through but we hit the 60s then after Christmas - so no coat. I won't go down to shoot ice today - it hit the 67 degrees in early December. No Coats, no Clarks either. I've still got a lot of captures in the temp directory in this stretch of no skies. I found Willow Farm on Google maps when searching for a barn I glimpsed and made some trips down there and added some more weird captures to temp stash. This is a shot of Willow Creek, another ditch, IMHO. I went back down with my D70 to see if I could capture some shot of the barn. I may go out tomorrow if we can retrieve some skies and clouds at all. I am pulling for a good sky with the front tomorrow.
Here is a normal, if not fairly slow hand held exposure. I already posted other shots that were "action" shots and they were the better shots. I burned up the Christmas lights this season. I grabbed a couple of slices in Lightroom and dropped them into Photoshop to see what might appear.
The pubs may be closed but the trains remain the same, in this instance 37421 topping 37025 through Altrincham on the 21:00 Crewe to Derby RTC. The date is Friday 30 October 2020.
9 minute long exposure out on the edge of the ocean in the Bahamas. Storm clouds were building in the distance and it was pitch black. Another instance where I couldn't see or hear anything due to the crashing ocean water on the rocks.
Strobist: 1 offhand flash from right side of frame with a red gel and 1 offhand flash from the left with no gel. General light painting on dock for shadow exposure.
Photo by Russell Eck
Photo captured via Minolta Maxxum AF Zoom 100-200mm F/4.5 "Baby Beer Can" Lens. Spokane Indian Reservation. Selkirk Mountains Range. Okanogan-Colville Xeric Valleys and Foothills section within the Northern Rockies Region. Inland Northwest. Stevens County, Washington. Early October 2021.
Exposure Time: 1/5 sec. * ISO Speed: ISO-100 * Aperture: F/11 * Bracketing: None * Color Temperature: 5812 K * Plug-In: Black Magic Preset #48 * Elevation: 2,463 feet above sea-level
"“Nobody of any real culture, for instance, ever talks nowadays about the beauty of sunset. Sunsets are quite old fashioned. To admire them is a distinct sign of provincialism of temperament. Upon the other hand they go on”
I'm going to take a big risk here and dedicate this shot to the one and only barbera*. She hates sunset shots. No, that's not true - she detests them! But earlier today she faved one of mine. Oh yes!!! So, Barbara, this one is for you with love, thanks and a little wink ;-))
NEW GALLERY - Please take a look at tanakawho's work in this new gallery.
.
NEW JERSEY 2017 BALD EAGLE PROJECT REPORT
ANOTHER PRODUCTIVE YEAR FOR NJ’S EAGLES
by Larissa Smith, CWF Wildlife Biologist
The Conserve Wildlife Foundation of NJ in partnership with the NJ Endangered and Nongame Species Program has released the 2017 NJ Bald Eagle Project Report. In 2017, 178 eagle nests were monitored during the nesting season. Of these nests 153 were active (with eggs) and 25 were territorial or housekeeping pairs. One hundred and ninety young were fledged.
In 2017 the number of active nests was three more than in 2016, but the number young fledged decreased by 27 from a record high of 216 fledged in 2016. The productivity rate this season of 1.25 young/active nest is still above the required range of 0.0 to 1.1 for population maintenance. Productivity could be lower this season for many reasons including weather, predation and disturbance to the nesting area. In 2017 nest monitors reported several instances of “intruder” eagles at nests which did disrupt the nesting attempts of several pairs. One of these “eagle dramas” unfolded at the Duke Farms eagle cam watched by millions of people. An intruder female attempted to replace the current female. This harassment interrupted the pairs bonding and copulation and no eggs were laid.
This year’s report includes a section on Resightings of banded eagles. Resightings of NJ (green) banded eagles have increased over the years, as well as eagles seen in NJ that were banded in other states. These resightings are important, as they help us to understand eagle movements during the years between fledging and settling into a territory, as well as adult birds at a nest site.
For more info: www.conservewildlifenj.org/blog/2017/12/06/new-jersey-201...
New Jersey Bald Eagle Project Report | 2017 may be downloaded here: www.state.nj.us/dep/fgw/ensp/pdf/eglrpt17.pdf
Epilobium canum—zauschneria. The common name of zauschneria is a rare instance of a Latin genus name becoming the vernacular name after the plant was moved to the genus Epilobium. Gardening books and field manuals may call it "California fuchsia", but that name is rarely heard in speech. Zauschnerias are found in almost every garden in Berkeley and perhaps throughout California, making it one of the best known of all California natives. The plant blooms into November at the Regional Parks Botanic Garden. E. canum provides an important late season nectar source for native California hummingbirds. Photographed at Regional Parks Botanic Garden located in Tilden Regional Park near Berkeley, CA.
Photo of the Similkameen River and the distant North Cascades Mountains and Region, in the far background, captured via Minolta MD Zoom Rokkor-X 24-50mm F/4 lens and the bracketing method of photography. Okanogan Highlands Region. Inland Northwest. Okanogan County, Washington. Early February 2018.
Exposure Time: 1/250 sec. * ISO Speed: ISO-100 * Aperture: F/11 * Bracketing: +1 / -1 * Color Temperature: 6650 K * Film Plug-In: Kodak Portra 160 NC
In this instance I didn't concentrate on the sketch; simply allow my hand and eye to wander round the view of the quartet as my ears enjoyed the sounds.
First instance of a MHV on Route 164 - MHV40
London General MHV40 on Route 164, Wimbledon Francis Grove
BG66MJJ
Volvo B5LH/MCV EvoSeti
Another image from a set taken on 5th July 1976.
This time a pair of class 20s travel light through Beeston station having probably come off Toton Shed and the refuelling point. Toton's allocation of the class was around 110 units at the time, working predominantly on coal traffic. It's likely then the destination of this pair will be one of the north Nottinghamshire collieries, which they'll access via Lenton South Junction and north through Basford.
By this time Beeston station had been substantially de-manned and, if memory serves me right, would be down to a single person covering each shift. However the infrastructure still showed signs of the busier times of the early 1960s that I enjoyed as a young lad sat on the footbridge by the level crossing.
For instance, the office just below the "Gentlemen" sign housed the Station Porters, and in fact extended into another office out of sight to the right. When this shot was taken it was locked out of use, but there's no hiding the well-worn and scuffed step, even from this distance, caused by countless pairs of shoes.
The "Gentlemen" facilities were still in use and a walk down a narrow alleyway accessed them. I believe they are no longer open to the public with the alleyway blocked off.
Moving forward, and just to the right beside the characterful old clock, is the barred window and door leading to the "Parcels" facility. In fact it was a double door (the other which I inconsiderately excluded from the frame) allowing luggage trollies to be wheeled in and out laden with carpets, parcels, pigeon baskets, and occasionally produce that didn't travel by road. I really can't remember when this stopped but presumably at the time the 3-4 Porters, Ticket Office Clerk, plus Station Master, became one person doing everything - I'm guessing the mid-to-late 1960s, but would be glad to hear from anyone who knows better.
Back to the class 20s then, the lead loco is 20071 which, with its cab recess for token collection equipment, indicates it's a migrant from Scotland, and 20169. The latter was still sporting BR's green livery, and maybe 20071 was too.
Ilford FP4, developed in Acutol
5th July 1976
Lucky instance...
Launched in September 2021, the HertsLynx concept (operated by Uno) uses a set of Mercedes minibuses to provide an on-demand transport service between a number of towns and villages across a wide area of north and east Hertfordshire.
Bishops Stortford stands at the eastern most side of the travel network, with Mercedes Benz 516CDi/EVB RJ21XDB seen passing along a dull Hadham Road leaving Bishops Stortford behind heading back west 30/12/21
Another instance where you think you have more time than you really have. There I was tucking into my Beef and Ale pie in Weaverham thinking I had half an hour in hand when a brief glance on my phone revealed this was on the move 21E dispensing with the pathing stop at Ditton. Jacket on, camera in hand and a sprint across the field (well quick walk/run) and as I arrived at the bridge my heart sank as 'something' diesel hauled passed through the cutting out of view. A quick check of RTT though revealed the Pullman was held at Weaver Jct, so it was back on.
Five minutes later DB 67021, getting a move on, came into view and the sun came out ... there is a God!
Fly:
Family: Tachinidae
Order: Diptera
Caterpillar:
Doratifera quadriguttata
Family: Limacodidae
Order: Lepidoptera
The photo shows an attack by a parasitoid Tachinid fly on the caterpillar of the four-spotted cup moth.
The fly is depositing an egg on the caterpillar while carefully avoiding the venomous urticating spines. Site selection is critical, as the caterpillar may attempt to groom and remove the egg. Typically, the fly aims to lay the egg behind the caterpillar’s head; however, in this instance, the egg appears to be placed at the anterior end of the caterpillar's body (the egg can be seen upon closer inspection). These caterpillars generally keep their heads concealed, raising them only occasionally. In this scenario, the caterpillar seems to be orientated with its head positioned downward behind the leaf, while its tail-end clasper is visible at the leaf’s edge. The tachinid fly may may have been duped into selecting a suboptimal placement for her egg, potentially allowing the caterpillar to groom it off. This situation illustrates how the fly may be deceived by the caterpillar’s defensive evolutionary strategy. The caterpillar employs automimicry to divert attacks from its vulnerable head to its tail; notably, both ends are difficult to distinguish and each possesses a pair of red horns.
If the egg is not groomed off then it will hatch and the larva will then parasitise the unfortunate caterpillar, eating it from the inside.
References
Walker, A. A., Robinson, S. D., Paluzzi, J. P. V., Merritt, D. J., Nixon, S. A., Schroeder, C. I., ... & King, G. F. (2021). Production, composition, and mode of action of the painful defensive venom produced by a limacodid caterpillar, Doratifera vulnerans. Proceedings of the National Academy of Sciences, 118(18), e2023815118.
Butterfly house, 2025. Doratifera quadriguttata (Walker, 1855)
lepidoptera.butterflyhouse.com.au/lima/quadriguttata.html
.DSC09103 PW copy
Dear Protagonist, (a reverie regarding you in the perpetual present), Tim Lowly © 2013, acrylic on panel, 86” x 74”
The parenthetical latter part of the title alludes to both how
1) a painting has a relatively temporally static state (compared to film for instance) and as such the viewer's experience with a painting is fundamentally rooted in the present [ie. this reading suggests the "you" is the viewer].
and
2) Temma (my daughter depicted in the painting) seems to have a fairly limited memory and as such seems to exist in a perpetual present [ie. this reading suggests the "you" is Temma].
Assistance with this work by Erica Elan Ciganek and Maggie Hubbard]
Please view this large
Here is the beginning of an essay Kelly VanderBrug in which she reflects on the painting (it's from the book "Trying to Get a Sense of Scale" ). Over the summer I was finishing this painting Kelly would stop by frequently to observe the process of the painting's making:
Temma takes a step, making and made. As in Temma on Earth, she continues muscle tensed, hunched, clenched hands, but this Temma’s vulnerability lies below the surface. She shuffles forward from dark clearing to a path—perhaps a dry streambed. Her awkward yet purposeful baby steps exhibit intentionality. She isn’t just going to the store. She wants to show the viewer herself, her role.
She gazes inward rather than out at the viewer. Technically the real Temma is cortically blind, eyes intact but brain unable to process the images that come. In this painting a blindness of sorts gets painted even though it is ambiguous. Her eyes look down or maybe flicker shut though she still seems to see in her own way. The oddest thing by far comes as a surprise, rising in my mind as I continue looking at this painting. It is this: here seeing assumes no higher value than any other voluntary or involuntary action except as a means of recognizing the girl.
When the viewer pulls back to take in the whole image, ambiguity adds to ambiguity. Everything gets peeled back and tipped up. What is here? The viewer lists a girl, wall, maybe wallpaper or garden or corral reef, air, floor, and shimmer of light. The bottom left corner is important. It points to a real and readable domestic space. It suggests that something double happens: The outside space is the wallpaper of this room with a doll’s bed, but the bed could also fit a person. In the latter case this Temma towers over the space with its vaulted ceiling.
In the painting Temma exists ambiguously, both vision and real. The light says it reflects on her and comes from her but not as exactly as Rembrandt’s Supper at Emmaus. Temma’s glow subtly makes, grows, and extends. Unlike her steps, she does not make with intention. It is her very existence that makes. She emits the cool bioluminescence of a female firefly and also moves close to the ground. She is a messenger without wings. Around her, embers fly up, shimmering into the heights, but nothing sears the eye or skin. These embers, paint daubs skipping from her shoulders, land at her feet and shimmer temporarily. As this world grows chilled, Temma brings light in a small circle. Her light quakes, fragile and expanding.
The light that reflects on her is another light all together. Temma comes forward into this brighter light, and even in her projecting glow, everything else fades back. The blanket dazzles. Her wrap of rainbow color cocoons her and hums with bright energy. Its softness appears blurred even as the light crisply carves out peaks and valleys. Her hands and face beam even more. It is clear that her body is not “normative,” but at the same time Lowly depicts her beauty. The reflecting light spotlights her and emphasizes her already obvious significance. Her message is a call to attention. It suggests that paying attention to her will create change.
It is important here that Temma crosses multiple spaces. She not only steps on a path, but that path is a wall. It leads into a room and out to the space where the painting hangs. The three spaces barely clear their throat. A viewer must take time for it to settle in. She moves from outside the wall to domestic space to our world. She is already leaning through, her head catching the bright light of our space. Or is our space the fourth space, the third space being a stage where all this happens?
Whatever the case, Temma is our guide and the focus of our attention. The focus is sharpest in her face and hands. Everything else winks in and out of focus. Here and there a stone is clear, but not the plant or bit of wood next to it. Darkness shrouds the upper reaches of the painting, the background, and the bed’s head- board. The blanket around her blurs slightly.
Photo of Wahkeena Creek captured via Minolta MD Zoom Rokkor-X 24-50mm F/4 lens. On the Wahkeena Creek Trail #420. Wahkeena Canyon. Mount Hood National Forest. Columbia River Gorge National Scenic Area. Columbia River Gorge-Area. Cascades Range. Multnomah County, Oregon. Early April 2017.
Exposure Time: 0.4 sec. * ISO Speed: ISO-100 * Aperture: F/22 * Bracketing: None
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For instance, from Huffington Post, Nov. 5, 2009:
EXCERPT: While thousands of at-risk Americans wait, some big Wall Street banks have already secured the hard-to-find H1N1 vaccine for their employees.
Building on a story that BusinessWeek broke, NBC reports that employees at the New York Stock Exchange, bankers at Goldman Sachs and Citigroup, and employees at the Federal Reserve have all received swine flu vaccine doses to administer to their employees.
In particular, NBC reports that Goldman Sachs has received 200 doses of the vaccine -- the same amount as Lenox Hill Hospital in New York.
VIDEO & full text at: www.huffingtonpost.com/2009/11/05/swine-flu-vaccine-banks...
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Blame for this lies squarely upon Bait & Switch Obama & the vicious corporatism which he is using all of his power to advance (witness the golden pigs he put atop the nation immediately under himself, such as Larry Summers & Tim Geithner).
Yet another instance of "I got here too early again" as BNSF 7303 runs through the edge of the Coconino National Forest on it's way to Winslow and eventually the CSXT at Chicago, Illinois. Can't understate how nice it was to see trains run through area's lush with various Evergreen and Conifers, hopefully next time I get out here I'll see the tracks lit up with sunlight instead of being covered in shadows.
This is the River Adur at Mockbridge, Shermanbury, with a particularly good hoar frost.
It's a familiar and much photographed scene (I wasn't alone this morning), and I like to catch it in different conditions.
Here, for instance, it was in flood.
Federation Square often used as a large advertising venue, this instance for Jet star, Australia's budget Airline. For What it's worth this view has completely changed, thanks to the new Metro Tunnel under construction at this date 2023-03-21.
One of several projects, that explore photography as evidence amongst other ideas.
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Sony A7RII Fine Art Zion National Park Autumn Winter Subway Hike! Dr. Elliot McGucken Fine Art Landscape Photography!
An important thing to remember is that even though pixel sizes keep getting smaller and smaller, the technology is advancing, so the smaller pixels are more efficient at collecting light. For instance, the Sony A7rII is back-illuminated which allows more photons to hit the sensor. Semiconductor technology is always advancing, so the brilliant engineers are always improving the signal/noise ratio. Far higher pixel counts, as well as better dynamic ranger, are thus not only possible, but the future!
Yes I have a Ph.D. in physics! I worked on phototranistors and photodiodes as well as an artificial retina for the blind. :)
You can read more about my own physics theory (dx4/dt=ic) here: herosodysseyphysics.wordpress.com/
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Dr. Elliot McGucken Fine Art Photography!
I love shooting fine art landscapes and fine art nature photography! :) I live for it!
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Feel free to ask me any questions! Always love sharing tech talk and insights! :)
And all the best on Your Epic Hero's Odyssey!
The new Lightroom rocks!
Beautiful magnificent clouds!
View your artistic mission into photography as an epic odyssey of heroic poetry! Take it from Homer in Homer's Odyssey: "Tell me, O muse, of that ingenious hero who travelled far and wide after he had sacked the famous town of Troy. Many cities did he visit, and many were the nations with whose manners and customs he was acquainted; moreover he suffered much by sea while trying to save his own life and bring his men safely home; but do what he might he could not save his men, for they perished through their own sheer folly in eating the cattle of the Sun-god Hyperion; so the god prevented them from ever reaching home. Tell me, too, about all these things, O daughter of Jove, from whatsoever source you may know them. " --Samuel Butler Translation of Homer's Odyssey
All the best on your Epic Hero's Odyssey from Johnny Ranger McCoy!
Sony A7RII Fine Art Zion National Park Autumn Winter Subway Hike! Dr. Elliot McGucken Fine Art Landscape Photography! Sony A7R2 & Sony 16-35mm Vario-Tessar T FE F4 ZA OSS E-Mount Lens!
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The Zion Narrows!
Sea level drop refers to the phenomenon in which melting glaciers cause the surrounding land to rise.. Between 1901 and 2018, the average global sea level rose by 15–25 cm (6–10 in), or an average of 1–2 mm per year. This rate accelerated to 4.62 mm/yr for the decade 2013–2022.[3] Climate change due to human activities is the main cause. Between 1993 and 2018, thermal expansion of water accounted for 42% of sea level rise. Melting temperate glaciers accounted for 21%, with Greenland accounting for 15% and Antarctica 8%.: 1576 Sea level rise lags changes in the Earth's temperature. So sea level rise will continue to accelerate between now and 2050 in response to warming that is already happening. What happens after that will depend on what happens with human greenhouse gas emissions. Sea level rise may slow down between 2050 and 2100 if there are deep cuts in emissions. It could then reach a little over 30 cm (1 ft) from now by 2100. With high emissions it may accelerate. It could rise by 1 m (3+1⁄2 ft) or even 2 m (6+1⁄2 ft) by then.[6][7] In the long run, sea level rise would amount to 2–3 m (7–10 ft) over the next 2000 years if warming amounts to 1.5 °C (2.7 °F). It would be 19–22 metres (62–72 ft) if warming peaks at 5 °C (9.0 °F): 21 meters. Rising seas ultimately impact every coastal and island population on Earth. This can be through flooding, higher storm surges, king tides, and tsunamis. These have many knock-on effects. They lead to loss of coastal ecosystems like mangroves. Crop production falls because of salinization of irrigation water and damage to ports disrupts sea trade. The sea level rise projected by 2050 will expose places currently inhabited by tens of millions of people to annual flooding. Without a sharp reduction in greenhouse gas emissions, this may increase to hundreds of millions in the latter decades of the century. Areas not directly exposed to rising sea levels could be affected by large scale migrations and economic disruption. At the same time, local factors like tidal range or land subsidence, as well as the varying resilience and adaptive capacity of individual ecosystems, sectors, and countries will greatly affect the severity of impacts. For instance, sea level rise along the United States (particularly along the US East Coast) is already higher than the global average, and it is expected to be 2 to 3 times greater than the global average by the end of the century. Yet, out of the 20 countries with the greatest exposure to sea level rise, 12 are in Asia. Bangladesh, China, India, Indonesia, Japan, the Philippines, Thailand and Vietnam collectively account for 70% of the global population exposed to sea level rise and land subsidence. Finally, the greatest near-term impact on human populations will occur in the low-lying Caribbean and Pacific islands—many of those would be rendered uninhabitable by sea level rise later this century.
Societies can adapt to sea level rise in three ways: by managed retreat, by accommodating coastal change, or by protecting against sea level rise through hard-construction practices like seawalls or soft approaches such as dune rehabilitation and beach nourishment. Sometimes these adaptation strategies go hand in hand; at other times choices must be made among different strategies. A managed retreat strategy is difficult if an area's population is quickly increasing: this is a particularly acute problem for Africa, where the population of low-lying coastal areas is projected to increase by around 100 million people within the next 40 years. Poorer nations may also struggle to implement the same approaches to adapt to sea level rise as richer states, and sea level rise at some locations may be compounded by other environmental issues, such as subsidence in so-called sinking cities. Coastal ecosystems typically adapt to rising sea levels by moving inland; but may not always be able to do so, due to natural or artificial barriers. Between 1901 and 2018, the global mean sea level rose by about 20 cm (or 8 inches). More precise data gathered from satellite radar measurements found a rise of 7.5 cm (3 in) from 1993 to 2017 (average of 2.9 mm/yr), accelerating to 4.62 mm/yr for the decade 2013–2022.
Regional variations: Sea level rise is not uniform around the globe. Some land masses are moving up or down as a consequence of subsidence (land sinking or settling) or post-glacial rebound (land rising due to the loss of weight from ice melt). Therefore, local relative sea level rise may be higher or lower than the global average. Gravitational effects of changing ice masses also add to differences in the distribution of sea water around the globe. When a glacier or an ice sheet melts, the loss of mass reduces its gravitational pull. In some places near current and former glaciers and ice sheets, this has caused local water levels to drop, even as the water levels will increase more than average further away from the ice sheet. Consequently, ice loss in Greenland has a different fingerprint on regional sea level than the equivalent loss in Antarctica. On the other hand, the Atlantic is warming at a faster pace than the Pacific. This has consequences for Europe and the U.S. East Coast, which receives a sea level rise 3–4 times the global average. The downturn of the Atlantic meridional overturning circulation (AMOC) has been also tied to extreme regional sea level rise on the US Northeast Coast. Many ports, urban conglomerations, and agricultural regions are built on river deltas, where subsidence of land contributes to a substantially increased relative sea level rise. This is caused by both unsustainable extraction of groundwater and oil and gas, as well as by levees and other flood management practices preventing the accumulation of sediments which otherwise compensates for the natural settling of deltaic soils, over 3 m (10 ft) in urban areas of the Mississippi River Delta (New Orleans), and over 9 m (30 ft) in the Sacramento–San Joaquin River Delta. On the other hand, post-glacial isostatic rebound causes relative sea level fall around the Hudson Bay in Canada and the northern Baltic.
Projections: A comparison of SLR in six parts of the US. The Gulf Coast and East Coast see the most SLR, whereas the West Coast the least NOAA predicts different levels of sea level rise through 2050 for several US coastlines. There are two complementary ways of modeling sea level rise and making future projections. In the first approach, scientists use process-based modeling, where all relevant and well-understood physical processes are included in a global physical model. An ice-sheet model is used to calculate the contributions of ice sheets and a general circulation model is used to compute the rising sea temperature and its expansion. While some of the relevant processes may be insufficiently understood, this approach can predict non-linearities and long delays in the response, which studies of the recent past will miss. In the other approach, scientists employ semi-empirical techniques using historical geological data to determine likely sea level responses to a warming world, in addition to some basic physical modeling. These semi-empirical sea level models rely on statistical techniques, using relationships between observed past contributions to global mean sea level and global mean temperature. This type of modeling was partially motivated by most physical models in previous Intergovernmental Panel on Climate Change (IPCC) literature assessments having underestimated the amount of sea level rise compared to observations of the 20th century.
Projections for the 21st century: Historical sea level reconstruction and projections up to 2100 published in 2017 by the U.S. Global Change Research Program.[35] RCPs are different scenarios for future concentrations of greenhouse gases. The Intergovernmental Panel on Climate Change provides multiple plausible scenarios of 21st century sea level rise in each report, starting from the IPCC First Assessment Report in 1990. The differences between scenarios are primarily due to the uncertainty about future greenhouse gas emissions, which are subject to hard to predict political action, as well as economic developments. The scenarios used in the 2013-2014 Fifth Assessment Report (AR5) were called Representative Concentration Pathways, or RCPs. An estimate for sea level rise is given with each RCP, presented as a range with a lower and upper limit, to reflect the unknowns. The RCP2.6 pathway would see GHG emissions kept low enough to meet the Paris climate agreement goal of limiting warming by 2100 to 2 °C. Estimated SLR by 2100 for RCP2.6 was about 44 cm (the range given was as 28–61 cm). For RCP8.5 the sea level would rise between 52 and 98 cm (20+1⁄2 and 38+1⁄2 in). A set of older estimates of sea level rise. Sources showed a wide range of estimates
Sea level rise projections for the years 2030, 2050 and 2100
The report did not estimate the possibility of global SLR being accelerated by the outright collapse of the marine-based parts of the Antarctic ice sheet, due to the lack of reliable information, only stating with medium confidence that if such a collapse occurred, it would not add more than several tens of centimeters to 21st century sea level rise. Since its publication, multiple papers have questioned this decision and presented higher estimates of SLR after attempting to better incorporate ice sheet processes in Antarctica and Greenland and to compare the current events with the paleoclimate data. For instance, a 2017 study from the University of Melbourne researchers estimated that ice sheet processes would increase AR5 sea level rise estimate for the low emission scenario by about one quarter, but they would add nearly half under the moderate scenario and practically double estimated sea level rise under the high emission scenario. The 2017 Fourth United States National Climate Assessment presented estimates comparable to the IPCC for the low emission scenarios, yet found that the SLR of up to 2.4 m (10 ft) by 2100 relative to 2000 is physically possible if the high emission scenario triggers Antarctic ice sheet instability, greatly increasing the 130 cm (5 ft) estimate for the same scenario but without instability. A 2016 study led by Jim Hansen presented a hypothesis of vulnerable ice sheet collapse leading to near-term exponential sea level rise acceleration, with a doubling time of 10, 20 or 40 years, thus leading to multi-meter sea level rise in 50, 100 or 200 years, respectively. However, it remains a minority view amongst the scientific community. For comparison, two expert elicitation papers were published in 2019 and 2020, both looking at low and high emission scenarios. The former combined the projections of 22 ice sheet experts to estimate the median SLR of 30 cm (12 in) by 2050 and 70 cm (27+1⁄2 in) by 2100 in the low emission scenario and the median of 34 cm (13+1⁄2 in) by 2050 and 110 cm (43+1⁄2 in) by 2100 in a high emission scenario. They also estimated a small chance of sea levels exceeding 1 meter by 2100 even in the low emission scenario and of going beyond 2 meters in the high emission scenario, with the latter causing the displacement of 187 million people. The other paper surveyed 106 experts, who had estimated a median of 45 cm (17+1⁄2 in) by 2100 for RCP2.6, with a 5%-95% range of 21–82 cm (8+1⁄2–32+1⁄2 in). For RCP8.5, the experts estimated a median of 93 cm (36+1⁄2 in) by 2100, with a 5%-95% range of 45–165 cm (17+1⁄2–65 in). By 2020, the observed ice-sheet losses in Greenland and Antarctica were found to track the upper-end range of the AR5 projections. Consequently, the updated SLR projections in the 2019 IPCC Special Report on the Ocean and Cryosphere in a Changing Climate were somewhat larger than in AR5, and they were far more plausible when compared to an extrapolation of observed sea level rise trends. The main set of sea level rise projections used in IPCC Sixth Assessment Report (AR6) was ultimately only slightly larger than the one in SROCC, with SSP1-2.6 resulting in a 17-83% range of 32–62 cm (12+1⁄2–24+1⁄2 in) by 2100, SSP2-4.5 resulting in a 44–76 cm (17+1⁄2–30 in) range by 2100 and SSP5-8.5 leading to 65–101 cm (25+1⁄2–40 in). The report also provided extended projections on both the lower and the upper end, adding SSP1-1.9 scenario which represents meeting the 1.5 °C (2.7 °F) goal and has the likely range of 28–55 cm (11–21+1⁄2 in), as well as "low-confidence" narrative involving processes like marine ice sheet and marine ice cliff instability under SSP5-8.5. For that scenario, it cautioned that the sea level rise of over 2 m (6+1⁄2 ft) by 2100 "cannot be ruled out".[7] And as of 2022, NOAA suggests 50% probability of 0.5 m (19+1⁄2 in) sea level rise by 2100 under 2 °C (3.6 °F), increasing to >80% to >99% under 3–5 °C (5.4–9.0 °F)." If countries cut greenhouse gas emissions significantly (lowest trace), the IPCC expects sea level rise by 2100 to be limited to 0.3 to 0.6 meters (1–2 feet).However, in a worst case scenario (top trace), sea levels could rise 5 meters (16 feet) by the year 2300. A map showing major SLR impact in south-east Asia, Northern Europe and the East Coast of the US
Map of the Earth with a long-term 6-metre (20 ft) sea level rise represented in red (uniform distribution, actual sea level rise will vary regionally and local adaptation measures will also have an effect on local sea levels). Models consistent with paleo records of sea level rise: 1189 indicate that substantial long-term SLR will continue for centuries even if the temperature stabilizes. After 500 years, sea level rise from thermal expansion alone may have reached only half of its eventual level, which models suggest may lie within ranges of 0.5–2 m (1+1⁄2–6+1⁄2 ft).[51] Additionally, tipping points of Greenland and Antarctica ice sheets are expected to play a larger role over such timescales, with very long-term SLR likely to be dominated by ice loss from Antarctica, especially if the warming exceeds 2 °C (3.6 °F). Continued carbon dioxide emissions from fossil fuel sources could cause additional tens of metres of sea level rise, over the next millennia. The available fossil fuel on Earth is enough to ultimately melt the entire Antarctic ice sheet, causing about 58 m (190 ft) of sea level rise. In the next 2,000 years the sea level is predicted to rise by 2–3 m (6+1⁄2–10 ft) if the temperature rise peaks at its current 1.5 °C (2.7 °F), by 2–6 m (6+1⁄2–19+1⁄2 ft) if it peaks at 2 °C (3.6 °F) and by 19–22 m (62+1⁄2–72 ft) if it peaks at 5 °C (9.0 °F).[6]: SPM-28 If temperature rise stops at 2 °C (3.6 °F) or at 5 °C (9.0 °F), the sea level would still continue to rise for about 10,000 years. In the first case it will reach 8–13 m (26–42+1⁄2 ft) above pre-industrial level, and in the second 28–37 m (92–121+1⁄2 ft). As both the models and observational records have improved, a range of studies has attempted to project SLR for the centuries immediately after 2100, which remains largely speculative. For instance, when the April 2019 expert elicitation asked its 22 experts about total sea level rise projections for the years 2200 and 2300 under its high, 5 °C warming scenario, it ended up with 90% confidence intervals of −10 cm (4 in) to 740 cm (24+1⁄2 ft) and −9 cm (3+1⁄2 in) to 970 cm (32 ft), respectively (negative values represent the extremely low probability of very large increases in the ice sheet surface mass balance due to climate change-induced increase in precipitation ). The elicitation of 106 experts led by Stefan Rahmstorf had also included 2300 for RCP2.6 and RCP 8.5: the former had the median of 118 cm (46+1⁄2 in), a 17%-83% range of 54–215 cm (21+1⁄2–84+1⁄2 in) and a 5%-95% range of 24–311 cm (9+1⁄2–122+1⁄2 in), while the latter had the median of 329 cm (129+1⁄2 in), a 17%-83% range of 167–561 cm (65+1⁄2–221 in) and a 5%-95% range of 88–783 cm (34+1⁄2–308+1⁄2 in). By 2021, AR6 was also able to provide estimates for year 2150 SLR alongside the 2100 estimates for the first time. According to it, keeping warming at 1.5 °C under the SSP1-1.9 scenario would result in sea level rise in the 17-83% range of 37–86 cm (14+1⁄2–34 in), SSP1-2.6 a range of 46–99 cm (18–39 in), SSP2-4.5 of 66–133 cm (26–52+1⁄2 in) range by 2100 and SSP5-8.5 leading to 98–188 cm (38+1⁄2–74 in). Moreover, it stated that if the "low-confidence" could result in over 2 m (6+1⁄2 ft) by 2100, it would then accelerate further to potentially approach 5 m (16+1⁄2 ft) by 2150. The report provided lower-confidence estimates for year 2300 sea level rise under SSP1-2.6 and SSP5-8.5 as well: the former had a range between 0.5 m (1+1⁄2 ft) and 3.2 m (10+1⁄2 ft), while the latter ranged from just under 2 m (6+1⁄2 ft) to just under 7 m (23 ft). Finally, the version of SSP5-8.5 involving low-confidence processes has a chance of exceeding 15 m (49 ft) by then. In 2018, it was estimated that for every 5 years CO2 emissions are allowed to increase before finally peaking, the median 2300 SLR increases by the median of 20 cm (8 in), with a 5% likelihood of 1 m (3+1⁄2 ft) increase due to the same. The same estimate found that if the temperature stabilized below 2 °C (3.6 °F), 2300 sea level rise would still exceed 1.5 m (5 ft), while the early net zero and slowly falling temperatures could limit it to 70–120 cm (27+1⁄2–47 in). Measurements: Sea level changes can be driven by variations in the amount of water in the oceans, by changes in the volume of that water, or by varying land elevation compared to the sea surface. Over a consistent time period, assessments can source contributions to sea level rise and provide early indications of change in trajectory, which helps to inform adaptation plans. The different techniques used to measure changes in sea level do not measure exactly the same level. Tide gauges can only measure relative sea level, whilst satellites can also measure absolute sea level changes. To get precise measurements for sea level, researchers studying the ice and the oceans on our planet factor in ongoing deformations of the solid Earth, in particular due to landmasses still rising from past ice masses retreating, and also the Earth's gravity and rotation. Satellites: Jason-1 continued the sea surface measurements started by TOPEX/Poseidon. It was followed by the Ocean Surface Topography Mission on Jason-2, and by Jason-3. Since the launch of TOPEX/Poseidon in 1992, an overlapping series of altimetric satellites has been continuously recording the sea level and its changes. Those satellites can measure the hills and valleys in the sea caused by currents and detect trends in their height. To measure the distance to the sea surface, the satellites send a microwave pulse towards Earth and record the time it takes to return after reflecting off the ocean's surface. Microwave radiometers measure and correct the additional delay caused by water vapor in the atmosphere. Combining these data with the precisely known location of the spacecraft determines the sea-surface height to within a few centimetres (about one inch).[59] Rates of sea level rise for the period 1993–2017 have been estimated from satellite altimetry to be 3.0 ± 0.4 millimetres (1⁄8 ± 1⁄64 in) per year. Satellites are useful for measuring regional variations in sea level, such as the substantial rise between 1993 and 2012 in the western tropical Pacific. This sharp rise has been linked to increasing trade winds, which occur when the Pacific Decadal Oscillation (PDO) and the El Niño–Southern Oscillation (ENSO) change from one state to the other.[61] The PDO is a basin-wide climate pattern consisting of two phases, each commonly lasting 10 to 30 years, while the ENSO has a shorter period of 2 to 7 years.Tide gauges: Between 1993 and 2018, the mean sea level has risen across most of the world ocean (blue colors). The global network of tide gauges is another important source of sea-level observations. Compared to the satellite record, this record has major spatial gaps but covers a much longer period of time. Coverage of tide gauges started primarily in the Northern Hemisphere, with data for the Southern Hemisphere remaining scarce up to the 1970s. The longest running sea-level measurements, NAP or Amsterdam Ordnance Datum established in 1675, are recorded in Amsterdam, Netherlands. In Australia, record collection is also quite extensive, including measurements by an amateur meteorologist beginning in 1837 and measurements taken from a sea-level benchmark struck on a small cliff on the Isle of the Dead near the Port Arthur convict settlement in 1841. This network was used, in combination with satellite altimeter data, to establish that global mean sea-level rose 19.5 cm (7.7 in) between 1870 and 2004 at an average rate of about 1.44 mm/yr (1.7 mm/yr during the 20th century). By 2018, data collected by Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO) had shown that the global mean sea level was rising by 3.2 mm (1⁄8 in) per year, at double the average 20th century rate,[68][69] while the 2023 World Meteorological Organization report found further acceleration to 4.62 mm/yr over the 2013–2022 period.[3] Thus, these observations help to check and verify predictions from climate change simulations. Regional differences are also visible in the tide gauge data. Some are caused by the local sea level differences, while others are due to vertical land movements. In Europe for instance, only some land areas are rising while the others are sinking. Since 1970, most tidal stations have measured higher seas, but sea levels along the northern Baltic Sea have dropped due to post-glacial rebound. Past sea level rise: Changes in sea levels since the end of the last glacial episode. An understanding of past sea level is an important guide to where current changes in sea level will end up once these processes conclude. In the recent geological past, thermal expansion from increased temperatures and changes in land ice are the dominant reasons of sea level rise. The last time that the Earth was 2 °C (3.6 °F) warmer than pre-industrial temperatures was 120,000 years ago, when warming due to Milankovitch cycles (changes in the amount of sunlight due to slow changes in the Earth's orbit) caused the Eemian interglacial; sea levels during that warmer interglacial were at least 5 m (16 ft) higher than now. The Eemian warming was sustained over a period of thousands of years, and the magnitude of the rise in sea level implies a large contribution from the Antarctic and Greenland ice sheets: 1139 According to Royal Netherlands Institute for Sea Research, levels of atmospheric carbon dioxide similar to today's ultimately increased temperature by over 2–3 °C (3.6–5.4 °F) around three million years ago. This temperature increase eventually melted one third of Antarctica's ice sheet, causing sea levels to rise 20 meters above the present values. Since the Last Glacial Maximum, about 20,000 years ago, sea level has risen by more than 125 metres (410 ft), with rates varying from less than 1 mm/year during the pre-industrial era to 40+ mm/year when major ice sheets over Canada and Eurasia melted. meltwater pulses are periods of fast sea level rise caused by the rapid disintegration of these ice sheets. The rate of sea level rise started to slow down about 8,200 years before present; sea level was almost constant for the last 2,500 years. The recent trend of rising sea level started at the end of the 19th century or at the beginning of the 20th.
Causes: A graph showing ice loss sea ice, ice shelves and land ice. Land ice loss contributetes to SLR. Earth lost 28 trillion tonnes of ice between 1994 and 2017: ice sheets and glaciers raised the global sea level by 34.6 ± 3.1 mm. The rate of ice loss has risen by 57% since the 1990s−from 0.8 to 1.2 trillion tonnes per year. The three main reasons warming causes global sea level to rise are the expansion of oceans due to heating, along with water inflow from melting ice sheets and glaciers. Sea level rise since the start of the 20th century has been dominated by retreat of glaciers and expansion of the ocean, but the contributions of the two large ice sheets (Greenland and Antarctica) are expected to increase in the 21st century. The ice sheets store most of the land ice (~99.5%), with a sea-level equivalent (SLE) of 7.4 m (24 ft 3 in) for Greenland and 58.3 m (191 ft 3 in) for Antarctica. Each year about 8 mm (5⁄16 in) of precipitation (liquid equivalent) falls on the ice sheets in Antarctica and Greenland, mostly as snow, which accumulates and over time forms glacial ice. Much of this precipitation began as water vapor evaporated from the ocean surface. Some of the snow is blown away by wind or disappears from the ice sheet by melt or by sublimation (directly changing into water vapor). The rest of the snow slowly changes into ice. This ice can flow to the edges of the ice sheet and return to the ocean by melting at the edge or in the form of icebergs. If precipitation, surface processes and ice loss at the edge balance each other, sea level remains the same. However scientists have found that ice is being lost, and at an accelerating rate. Ocean heating: There has been an increase in ocean heat content during recent decades as the oceans absorb most of the excess heat created by human-induced global warming. The oceans store more than 90% of the extra heat added to Earth's climate system by climate change and act as a buffer against its effects. The amount of heat needed to increase average temperature of the entire world ocean by 0.01 °C (0.018 °F) would increase atmospheric temperature by approximately 10 °C (18 °F): a small change in the mean temperature of the ocean represents a very large change in the total heat content of the climate system. When the ocean gains heat, the water expands and sea level rises. The amount of expansion varies with both water temperature and pressure. For each degree, warmer water and water under great pressure (due to depth) expand more than cooler water and water under less pressure : 1161 Consequently cold Arctic Ocean water will expand less than warm tropical water. Because different climate models present slightly different patterns of ocean heating, their predictions do not agree fully on the contribution of ocean heating to SLR. Heat gets transported into deeper parts of the ocean by winds and currents, and some of it reaches depths of more than 2,000 m (6,600 ft). Antarctic ice loss: The large volume of ice on the Antarctic continent stores around 70% of the world's fresh water. There is constant ice discharge along the periphery, yet also constant accumulation of snow atop the ice sheet: together, these processes form Antarctic ice sheet mass balance. Warming increases melting at the base of the ice sheet, but it is likely to increase snowfall, helping offset the periphery melt even if greater weight on the surface also accelerates ice flow into the ocean. While snowfall increased over the last two centuries, no increase was found in the interior of Antarctica over the last four decades. Further, sea ice, particularly in the form of ice shelves, blocks warmer waters around the continent from coming into direct contact with the ice sheet, so any loss of ice shelves substantially increases melt raises and instability. The Ross Ice Shelf, Antarctica's largest, is about the size of France and up to several hundred metres thick. Different satellite methods for measuring ice mass and change are in good agreement, and combining methods leads to more certainty about how the East Antarctic Ice Sheet, the West Antarctic Ice Sheet, and the Antarctic Peninsula evolve. A 2018 systematic review study estimated that the average annual ice loss across the entire continent was 43 gigatons (Gt) during the period from 1992 to 2002, acceletating to an annual average of 220 Gt from 2012 to 2017.[85] The sea level rise due to Antarctica has been estimated to be 0.25 mm per year from 1993 to 2005, and 0.42 mm per year from 2005 to 2015, although there are significant year-to-year variations. In 2021, limiting global warming to 1.5 °C (2.7 °F) was projected to reduce all land ice contribution to sea level rise by 2100 from 25 cm to 13 cm (from 10 to 6 in.) compared to current mitigation pledges, with mountain glaciers responsible for half the sea level rise contribution,[86] and the fate of Antarctica the source of the largest uncertainty.[86] By 2019, several studies have attempted to estimate 2300 sea level rise caused by ice loss in Antarctica alone: they suggest 16 cm (6+1⁄2 in) median and 37 cm (14+1⁄2 in) maximum values under the low-emission scenario but a median of 1.46 m (5 ft) metres (with a minimum of 60 cm (2 ft) and a maximum of 2.89 m (9+1⁄2 ft)) under the highest-emission scenario. East Antarctica: The world's largest potential source of sea level rise is the East Antarctic Ice Sheet (EAIS). It holds enough ice to raise global sea levels by 53.3 m (174 ft 10 in)[87] Historically, it was less studied than the West Antarctica as it had been considered relatively stable, an impression that was backed up by satellite observations and modelling of its surface mass balance. However, a 2019 study employed different methodology and concluded that East Antarctica is already losing ice mass overall. All methods agree that the Totten Glacier has lost ice in recent decades in response to ocean warming and possibly a reduction in local sea ice cover. Totten Glacier is the primary outlet of the Aurora Subglacial Basin, a major ice reservoir in East Antarctica that could rapidly retreat due to hydrological processes. The global sea level potential of 3.5 m (11 ft 6 in) flowing through Totten Glacier alone is of similar magnitude to the entire probable contribution of the West Antarctic Ice Sheet. The other major ice reservoir on East Antarctica that might rapidly retreat is the Wilkes Basin which is subject to marine ice sheet instability. Ice loss from these outlet glaciers is possibly compensated by accumulation gains in other parts of Antarctica. In 2022, it was estimated that the Wilkes Basin, Aurora Basin and other nearby subglacial basins are likely to have a collective tipping point around 3 °C (5.4 °F) of global warming, although it may be as high as 6 °C (11 °F), or as low as 2 °C (3.6 °F). Once this tipping point is crossed, the collapse of these subglacial basins could take place as little as 500 or as much as 10,000 years: the median timeline is 2000 years. On the other hand, the entirety of the EAIS would not be committed to collapse until global warming reaches 7.5 °C (13.5 °F) (range between 5 °C (9.0 °F) and 10 °C (18 °F)), and would take at least 10,000 years to disappear.[92][93] It is also suggested that the loss of two-thirds of its volume may require at least 6 °C (11 °F) of warming. West Antarctica: Even though East Antarctica contains the largest potential source of sea level rise, West Antarctica ice sheet (WAIS) is substantially more vulnerable. In contrast to East Antarctica and the Antarctic Peninsula, temperatures on West Antarctica have increased significantly with a trend between 0.08 °C (0.14 °F) per decade and 0.96 °C (1.73 °F) per decade between 1976 and 2012. Consequently, satellite observations recorded a substantial increase in WAIS melting from 1992 to 2017, resulting in 7.6 ± 3.9 mm (19⁄64 ± 5⁄32 in) of Antarctica sea level rise, with a disproportionate role played by outflow glaciers in the Amundsen Sea Embayment. In 2021, AR6 estimated that while the median increase in sea level rise from the West Antarctic ice sheet melt by 2100 is ~11 cm (5 in) under all emission scenarios (since the increased warming would intensify the water cycle and increase snowfall accumulation over the ice sheet at about the same rate as it would increase ice loss), it can conceivably contribute as much as 41 cm (16 in) by 2100 under the low-emission scenario and 57 cm (22 in) under the highest-emission one. This is because WAIS is vulnerable to several types of instability whose role remains difficult to model. These include hydrofracturing (meltwater collecting atop the ice sheet pools into fractures and forces them open), increased contact of warm ocean water with ice shelves due to climate-change induced ocean circulation changes, marine ice sheet instability (warm water entering between the seafloor and the base of the ice sheet once it is no longer heavy enough to displace the flow, causing accelerated melting and collapse) and even marine ice cliff instability (ice cliffs with heights greater than 100 m (330 ft) collapsing under their own weight once they are no longer buttressed by ice shelves). These processes do not have equal influence and are not all equally likely to happen: for instance, marine ice cliff instability has never been observed and was ruled out by some of the more detailed modelling. Thwaites Glacier, with its vulnerable bedrock topography visible.
The Thwaites and Pine Island glaciers are considered the most prone to ice sheet instability processes. Both glaciers' bedrock topography gets deeper farther inland, exposing them to more warm water intrusion into the grounding zone. Their contribution to global sea levels has already accelerated since the beginning of the 21st century, with the Thwaites Glacier now amounting to 4% of the global sea level rise. At the end of 2021, it was estimated that the Thwaites Ice Shelf can collapse in three to five years, which would then make the destabilization of the entire Thwaites glacier inevitable. The Thwaites glacier itself will cause a rise of sea level by 65 cm (25+1⁄2 in) if it will completely collapse,[107][102] although this process is estimated to unfold over several centuries. Since most of the bedrock underlying the West Antarctic Ice Sheet lies well below sea level, it is currently buttressed by Thwaites and Pine Island Glaciers, meaning that their loss would likely destabilize the entire ice sheet.[38][108] This possibility was first proposed back in the 1970s,[37] when a 1978 study predicted that anthropogenic CO2 emissions doubling by 2050 would cause 5 m (15 ft) of SLR from the rapid WAIS loss alone. Since then, improved modelling concluded that the ice within WAIS would raise the sea level by 3.3 m (10 ft 10 in). In 2022, the collapse of the entire West Antarctica was estimated to unfold over a period of about 2000 years, with the absolute minimum of 500 years (and a potential maximum of 13,000 years). At the same time, this collapse was considered likely to be triggered at around 1.5 °C (2.7 °F) of global warming and would become unavoidable at 3 °C (5.4 °F). At worst, it may have even been triggered already: subsequent (2023) research had made that possibility more likely, suggesting that the temperatures in the Amundsen Sea are likely to increase at triple the historical rate even with low or "medium" atmospheric warming and even faster with high warming. Without unexpected strong negative feedbacks emerging, the collapse of the ice sheet would become inevitable. While it would take a very long time from start to end for the ice sheet to disappear, it has been suggested that the only way to stop it once triggered is by lowering the global temperature to 1 °C (1.8 °F) below the preindustrial level; i.e. 2 °C (3.6 °F) below the temperature of 2020. Other researchers suggested that a climate engineering intervention aiming to stabilize the ice sheet's glaciers may delay its loss by centuries and give more time to adapt, although it's an uncertain proposal, and would necessarily end up as one of the most expensive projects ever attempted by humanity. Greenland ice sheet loss: Greenland 2007 melt, measured as the difference between the number of days on which melting occurred in 2007 compared to the average annual melting days from 1988 to 2006. Most ice on Greenland is part of the Greenland ice sheet which is 3 km (10,000 ft) at its thickest. Other Greenland ice forms isolated glaciers and ice caps. The sources contributing to sea level rise from Greenland are from ice sheet melting (70%) and from glacier calving (30%). Average annual ice loss in Greenland more than doubled in the early 21st century compared to the 20th century,[117] and there was a corresponding increase in SLR contribution from 0.07 mm per year between 1992 and 1997 to 0.68 mm per year between 2012 and 2017. Total ice loss from the Greenland Ice Sheet between 1992 and 2018 amounted to 3,902 gigatons (Gt) of ice, which is equivalent to the SLR of 10.8 mm.[118] The contribution for the 2012–2016 period was equivalent to 37% of sea level rise from land ice sources (excluding thermal expansion).[119] This rate of ice sheet melting is also associated with the higher end of predictions from the past IPCC assessment reports. In 2021, AR6 estimated that under the SSP1-2.6 emission scenario which largely fulfils the Paris Agreement goals, Greenland ice sheet melt adds around 6 cm (2+1⁄2 in) to global sea level rise by the end of the century, with a plausible maximum of 15 cm (6 in) (and even a very small chance of the ice sheet reducing the sea levels by around 2 cm (1 in) due to gaining mass through surface mass balance feedback). The scenario associated with the highest global warming, SSP5-8.5, would see Greenland add a minimum of 5 cm (2 in) to sea level rise, a likely median of 13 cm (5 in) cm and a plausible maximum of 23 cm (9 in). Certain parts of the Greenland ice sheet are already known to be committed to unstoppable sea level rise. Greenland's peripheral glaciers and ice caps crossed an irreversible tipping point around 1997, and will continue to melt. A subsequent study had found that the climate of the past 20 years (2000–2019) would already result of the loss of ~3.3% volume in this manner in the future, committing the ice sheet to an eventual 27 cm (10+1⁄2 in) of SLR, independent of any future temperature change.[126] There is also a global warming threshold beyond which a near-complete melting of the Greenland ice sheet occurs. Earlier research has put this threshold value as low as 1 °C (1.8 °F), and definitely no higher than 4 °C (7.2 °F) above pre-industrial temperatures.[128][26]: 1170 A 2021 analysis of sub-glacial sediment at the bottom of a 1.4 km Greenland ice core finds that the Greenland ice sheet melted away at least once during the last million years, even though the temperatures have never been higher than 2.5 °C (4.5 °F) greater than today over that period.[129][130] In 2022, it was estimated that the tipping point of the Greenland Ice Sheet may have been as low as 0.8 °C (1.4 °F) and is certainly no higher than 3 °C (5.4 °F) : there is a high chance that it will be crossed around 1.5 °C (2.7 °F). Once crossed, it would take between 1000 and 15,000 years for the ice sheet to disintegrate entirely, with the most likely estimate of 10,000 years. Mountain glacier loss: Based on national pledges to reduce greenhouse gas emissions, global mean temperature is projected to increase by 2.7 °C (4.9 °F), which would cause loss of about half of Earth's glaciers by 2100—causing a sea level rise of 115±40 millimeters. There are roughly 200,000 glaciers on Earth, which are spread out across all continents. Less than 1% of glacier ice is in mountain glaciers, compared to 99% in Greenland and Antarctica. However, this small size also makes mountain glaciers more vulnerable to melting than the larger ice sheets. This means they have had a disproportionate contribution to historical sea level rise and are set to contribute a smaller, but still significant fraction of sea level rise in the 21st century. Observational and modelling studies of mass loss from glaciers and ice caps indicate a contribution to sea level rise of 0.2-0.4 mm per year, averaged over the 20th century. The contribution for the 2012–2016 period was nearly as large as that of Greenland: 0.63 mm of sea level rise per year, equivalent to 34% of sea level rise from land ice sources. Glaciers contributed around 40% to sea level rise during the 20th century, with estimates for the 21st century of around 30%.[4] The IPCC Fifth Assessment Report estimated that glaciers contributing 7–24 cm (3–9+1⁄2 in) to global sea levels: 1165 . In 2023, a Science paper estimated that at 1.5 °C (2.7 °F), one quarter of mountain glacier mass would be lost by 2100 and nearly half would be lost at 4 °C (7.2 °F), contributing ~9 cm (3+1⁄2 in) and ~15 cm (6 in) to sea level rise, respectively. Because glacier mass is disproportionately concentrated in the most resilient glaciers, this would in practice remove between 49% and 83% of glacier formations. It had further estimated that the current likely trajectory of 2.7 °C (4.9 °F) would result in the SLR contribution of ~11 cm (4+1⁄2 in) by 2100. Mountain glaciers are even more vulnerable over the longer term. In 2022, another Science paper estimated that almost no mountain glaciers can be expected to survive once the warming crosses 2 °C (3.6 °F), and their complete loss largely inevitable around 3 °C (5.4 °F): there is even a possibility of complete loss after 2100 at just 1.5 °C (2.7 °F). This could happen as early as 50 years after the tipping point is crossed, although 200 years is the most likely value, and the maximum is around 1000 years. Sea ice loss: Sea ice loss contributes very slightly to global sea level rise. If the melt water from ice floating in the sea was exactly the same as sea water then, according to Archimedes' principle, no rise would occur. However melted sea ice contains less dissolved salt than sea water and is therefore less dense, with a slightly greater volume per unit of mass. If all floating ice shelves and icebergs were to melt sea level would only rise by about 4 cm (1+1⁄2 in). Changes to land water storage: Human activity impacts how much water is stored on land. Dams retain large quantities of water, which is stored on land rather than flowing into the sea (even though the total quantity stored will vary somewhat from time to time). On the other hand, humans extract water from lakes, wetlands and underground reservoirs for food production, which often causes subsidence. Furthermore, the hydrological cycle is influenced by climate change and deforestation, which can lead to further positive and negative contributions to sea level rise. In the 20th century, these processes roughly balanced, but dam building has slowed down and is expected to stay low for the 21st century: 1155 . Water redistribution caused by irrigation from 1993 to 2010 caused a drift of Earth's rotational pole by 78.48 centimetres (30.90 in), causing an amount of groundwater depletion equivalent to a global sea level rise of 6.24 millimetres (0.246 in). Impacts: High tide flooding, also called tidal flooding, has become much more common in the past seven decades.[ The impacts of sea level rise include higher and more frequent high-tide and storm-surge flooding, increased coastal erosion, inhibition of primary production processes, more extensive coastal inundation, along with changes in surface water quality and groundwater. These can lead to a greater loss of property and coastal habitats, loss of life during floods and loss of cultural resources. Agriculture and aquaculture can also be impacted. There can also be loss of tourism, recreation, and transport related functions.[10]: 356 Coastal flooding impacts are exacerbated by land use changes such as urbanisation or deforestation of low-lying coastal zones. Regions that are already vulnerable to the rising sea level also struggle with coastal flooding washing away land and altering the landscape.
Because the projected extent of sea level rise by 2050 will be only slightly affected by any changes in emissions,[5] there is confidence that 2050 levels of SLR combined with the 2010 population distribution (i.e. absent the effects of population growth and human migration) would result in ~150 million people under the water line during high tide and ~300 million in places which are flooded every year—an increase of 40 and 50 million people relative to 2010 values for the same.[13][141] By 2100, there would be another 40 million people under the water line during high tide if sea level rise remains low, and 80 million for a high estimate of the median sea level rise.[13] If ice sheet processes under the highest emission scenario result in sea level rise of well over one metre (3+1⁄4 ft) by 2100, with a chance of levels over two metres (6+1⁄2 ft),[16][6]: TS-45 then as many as 520 million additional people would end up under the water line during high tide and 640 million in places which are flooded every year, when compared to the 2010 population distribution.
Major cities threatened by sea level rise. The cities indicated are under threat of even a small sea level rise (of 1.6 feet/49 cm) compared to the level in 2010. Even moderate projections indicate that such a rise will have occurred by 2060.[142][143]
Over the longer term, coastal areas are particularly vulnerable to rising sea levels, changes in the frequency and intensity of storms, increased precipitation, and rising ocean temperatures. Ten percent of the world's population live in coastal areas that are less than 10 metres (33 ft) above sea level. Furthermore, two-thirds of the world's cities with over five million people are located in these low-lying coastal areas.[144] In total, approximately 600 million people live directly on the coast around the world.[145] Cities such as Miami, Rio de Janeiro, Osaka and Shanghai will be especially vulnerable later in the century under the warming of 3 °C (5.4 °F), which is close to the current trajectory.[12][36] Altogether, LiDAR-based research had established in 2021 that 267 million people worldwide lived on land less than 2 m (6+1⁄2 ft) above sea level and that with a 1 m (3+1⁄2 ft) sea level rise and zero population growth, that number could increase to 410 million people. Even populations who live further inland may be impacted by a potential disruption of sea trade, and by migrations. In 2023, United Nations secretary general António Guterres warned that sea level rises risk causing human migrations on a "biblical scale". Sea level rise will inevitably affect ports, but the current research into this subject is limited. Not enough is known about the investments required to protect the ports currently in use, and for how they may be protected before it becomes more reasonable to build new port facilities elsewhere. Moreover, some coastal regions are rich agricultural lands, whose loss to the sea can result in food shortages elsewhere. This is a particularly acute issue for river deltas such as Nile Delta in Egypt and Red River and Mekong Deltas in Vietnam, which are disproportionately affected by saltwater intrusion into the soil and irrigation water. Ecosystems:
When seawater reaches inland, coastal plants, birds, and freshwater/estuarine fish are threatened with habitat loss due to flooding and soil/water salinization.[153] So-called ghost forests emerge when coastal forest areas become inundated with saltwater to the point no trees can survive. Starting around 2050, some nesting sites in Florida, Cuba, Ecuador and the island of Sint Eustatius for leatherback, loggerhead, hawksbill, green and olive ridley turtles are expected to be flooded, and the proportion would only increase over time. And in 2016, Bramble Cay islet in the Great Barrier Reef was inundated, flooding the habitat of a rodent named Bramble Cay melomys.[157] In 2019, it was officially declared extinct. While some ecosystems can move land inward with the high-water mark, many are prevented from migrating due to natural or artificial barriers. This coastal narrowing, sometimes called 'coastal squeeze' when considering human-made barriers, could result in the loss of habitats such as mudflats and tidal marshes. Mangrove ecosystems on the mudflats of tropical coasts nurture high biodiversity, yet they are particularly vulnerable due to mangrove plants' reliance on breathing roots or pneumatophores, which might grow to be half a metre tall.[ While mangroves can adjust to rising sea levels by migrating inland and building vertically using accumulated sediment and organic matter, they will be submerged if the rate is too rapid, resulting in the loss of an ecosystem. Both mangroves and tidal marshes protect against storm surges, waves and tsunamis, so their loss makes the effects of sea level rise worse. Human activities, such as dam building, may restrict sediment supplies to wetlands, and thereby prevent natural adaptation processes. The loss of some tidal marshes is unavoidable as a consequence. Likewise, corals, important for bird and fish life, need to grow vertically to remain close to the sea surface in order to get enough energy from sunlight. The corals have so far been able to keep up the vertical growth with the rising seas, but might not be able to do so in the future.
en.wikipedia.org/wiki/Sea_level_rise
en.wikipedia.org/wiki/Sea_level_drop
Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location. Larger tidal range occur during spring tides (spring range), when the gravitational forces of both the Moon and Sun are aligned (at syzygy), reinforcing each other in the same direction (new moon) or in opposite directions (full moon). The largest annual tidal range can be expected around the time of the equinox if it coincides with a spring tide. Spring tides occur at the second and fourth (last) quarters of the lunar phases. By contrast, during neap tides, when the Moon and Sun's gravitational force vectors act in quadrature (making a right angle to the Earth's orbit), the difference between high and low tides (neap range) is smallest. Neap tides occur at the first and third quarters of the lunar phases. Tidal data for coastal areas is published by national hydrographic offices. The data is based on astronomical phenomena and is predictable. Sustained storm-force winds blowing from one direction combined with low barometric pressure can increase the tidal range, particularly in narrow bays. Such weather-related effects on the tide can cause ranges in excess of predicted values and can cause localized flooding. These weather-related effects are not calculable in advance. en.wikipedia.org/wiki/Tidal_range
Autumn in the Pacific Northwest, as well as in other areas, has seem to have arrived late this year. Finally, towards the middle part of october, the fall colors are starting to show and other places, and the beautiful cities parks. I remember this time last year the falll colors were just about done, so it's beautiful to be out and about early in the morning among the mist and among the cool and comforting fall air. This is such a beautiful time of year I'll tell you, and if this year's fall colors aren't as impressive as last year's or the years' before, then that's okay.
Photo of the Spokane River captured via Minolta Maxxum AF Zoom 70-210mm F/4 "Beer Can" Lens. Spokane Indian Reservation. Selkirk Mountains Range. Okanogan-Colville Xeric Valleys and Foothills section within the Northern Rockies Region. Inland Northwest. Stevens / Lincoln Counties, Washington. Late October 2022
Exposure Time: 1/5 sec. * ISO Speed: ISO-100 * Aperture: F/11 * Bracketing: None * Color Temperature: 6000 K ** Color Grading: Autumn Forest LUT 03