Thers are many jet aircraft that need to fly over Adelaide (S.A.) on any given day and occsionally if the weather conditions are suitable,then the contrails or chemtrails can last some time.Most fly overhead without any notice due to cloud or general street noise.As most domestic and international flights are at 35/40,000 feet it is just part of life and no big deal.

Apparently changes to the air navigation act some years ago has brought about this phenomenon

www.casa.gov.au for details lol.

White contrail grid in an utter blue sky

evening skies

The high humitdity in the upper altitudes allowed the vapor trails (contrails) from high flying jets to stick around a little longer than usual. This was the scene above Leaside on June 14, 2007.

Airplane contrails spreading out in the sky, massive CO2 pollution high up in the atmosphere.

If long-lasting can indicate an approaching frontal system.

booktwo.org/notebook/grounded-volcano-fictions/

Trincomali Channel

Galiano Island, BC., Canada.

Samsung camera pictures

I think i know this one. BA146?Approaching luton, seen from stevenage.

Contrails and clouds

ISO 200 | 1/2000| f/6.7 | 300mm

My wife and I took an early evening walk. As we were walking back the sun was setting. The contrail and clouds added to the beauty of the evening making the sky look very interesting.

Flying is not so harmless as you might think. Aviation nowadays is responsable for more clouds, more rain, less sunlight, radiative forcing, and generally for ruining cloudless skies. Pictures of contrails (condensation trails) and aviation-induced cirrus-clouds (aviation smog) since 1995 can be seen at www.contrails.nl

Contrails acting like clouds.

Altitude: 9754m over Milan

Routing: CAG-FKB

#Sony #Cybershot #QX100 #PlayMemories #LightBoxr #Contrail #Sky #Cloud

Contrail

Two contrails split the sky over Big Lake Alaska. (Older Photo)

Minor adjustments to contrast in photoshop CS2...

The air was so cold that when the planes would bank away hard the wingtips would produce contrails.

contrail

The upper atmosphere had some serious winds that were not noticeable from the ground. The effects on the clouds and jet contrails gave away their violence. Mt. Pleasant, Howard County Conservancy, Maryland.

Airplane Contrails, fragments of contrails in the sky.

Living on flight paths of two commercial airports (Dulles International and Reagan National Airport) sometimes provide quite a sky show. In a few weeks the trees will leaf out and the contrails will be hard to find. Photographed in Chevy Chase, Montgomery County, Maryland, US.

Contrails shadows through the haze below, with their tracks along the ground visible.

Some airplane contrails...

photo by Scott Beale / Laughing Squid

This photo is licensed under a Creative Commons license. If you use this photo within the terms of the license or make special arrangements to use the photo, please list the photo credit as "Scott Beale / Laughing Squid" and link the credit to laughingsquid.com.

St. Andrews cross anyone?

A contrail interlude. Cirrus aviaticus: see en.wikipedia.org/wiki/Contrail

I could count 29 contrails in the sky at that moment. We're right under a "highway" in Haute-Savoie (the whole Alps, really). The pollution in this area is a big advantage, for sunset photographs. Can't really think of anything else positive that's happened in this region over the last twenty years...

over a 737