View allAll Photos Tagged northpole
Assembled using two raw uncalibrated far-red/near-infrared (MT2) filtered views of Saturn's Northern Hemisphere on June 13 2017.
NASA/JPL-Caltech/SSI/Kevin M. Gill
This was as close as we could get to the Nordenskiöldbreen Glacier, due to the ice.
(Billefjorden, Svalbard)
Making our way to the North Pole on the Arctic Ocean during my world record Save the Poles expedition.
Processed using near-infrared (CB2, MT2) filtered images of Saturn's north pole taken by Cassini on March 31 2014.
NASA/JPL-Caltech/SSI/Kevin M. Gill
Assembled using raw uncalibrated near-infrared (CB2, MT2) filtered images taken by Cassini on April 26 2017.
NASA/JPL-Caltech/SSI/Kevin M. Gill
30 Day Photography Challenge
20th challenge** Photo Of Movement **
****view on black****
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The challenge was movement ...decided with all the leaves falling outside .....would try to capture a few leaves in midair,,,this one shows a few in midair but the one is touching another leaf and it appears to be fluttering
Assembled using RGB filtered images as color over near-infrared (CB2) filtered images. Taken by Cassini on July 24 2013.
NASA/JPL-Caltech/SSI/Kevin M. Gill
NASA image acquired August 7, 2012
An unusually large, long-lasting, and powerful cyclone was churning over the Arctic in early August 2012. Two smaller systems merged on August 5 to form the storm, which at the time occupied much of the Beaufort-Chukchi Sea and Canadian Basin. The Visible Infrared Imaging Radiometer Suite (VIIRS) on Suomi NPP captured this view of the storm on August 7, 2012. On average, Arctic cyclones last about 40 hours; as of August 9, 2012, this storm had lasted more than five days.
Arctic cyclones are more common during the summer than winter; however, summer cyclones tend to be weaker than the storms that batter the region during the winter. This cyclone’s central sea level pressure reached about 964 hPa on August 6, 2012—a number more typical of a winter cyclone. That pressure puts it within the lowest 3 percent of all minimum daily sea level pressures recorded north of 70 degrees latitude, noted Steve Vavrus, an atmospheric scientist based at the University of Wisconsin.
The number of cyclones affecting the Arctic appears to be increasing. According to a study of long-term Arctic cyclone trends authored by John Walsh and Xiangdong Zhang of the University of Alaska Fairbanks, the number and intensity of Arctic cyclones has increased during the second half of the twentieth century, particularly during the summer.
The cause of the increase is an open question, but climate change may be affecting Arctic cyclones. One study published in Atmospheric and Oceanic Science Letters, concluded that the total number of exratropical cyclones in the Northern Hemisphere would decline as the climate changed, but that the Arctic Ocean and adjacent areas would see slightly more and stronger summer storms.
One way climate change may affect Arctic cyclones is by changing the sea ice and ocean temperature. Climate change has caused sea ice to retreat markedly in recent decades and has also warmed Arctic Ocean temperatures. Such changes may be providing more energy and moisture to support cyclone development and persistence, Zhang explained.
However, scientists who study extratropical storms emphasize that pinning down how exactly climate change is affecting the size, frequency, or tracks of Arctic storms remains an important but unresolved question. “This past week’s storm was exceptional, and the occurrence of Arctic storms of extreme intensity is a topic deserving closer investigation, ” noted Walsh. “With reduced ice cover and warmer sea surfaces, the occurrence of more intense storms is certainly a plausible scenario. The limitation at present is the small sample size of exceptional events, but that may change in the future. ”
NASA Earth Observatory image by Jesse Allen and Robert Simmon, using VIIRS data. Caption by Adam Voiland with information from Robert Walsh, Xiangdong Zhang, and Steve Vavrus.
Instrument: Suomi NPP - VIIRS
Credit: NASA Earth Observatory
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Assembled using raw uncalibrated near infrared filtered images (CB2, MT2) taken by the Cassini spacecraft on February 27 2017.
NASA/JPL-Caltech/SSI/Kevin M. Gill
We visited the North Pole theme park in July 1970.
Standing at the 'North Pole' are my parents and my maternal grandmother.
Processed using near-infrared (CB2, MT2, MT3) filtered images of Saturn taken by Cassini on February 13 2017. Reprojected to a polarstereographic projection (as if you were directly above the pole).
NASA/JPL-Caltech/SSI/Kevin M. Gill
Processed using near-infrared filtered images (P120/CB2, MT2, MT3) of Saturn's north pole taken by Cassini on September 10 2014.
NASA/JPL-Caltech/SSI/Kevin M. Gill
Assembled using polar map projected near-infrared methane absorption band (CB2, MT2) filters taken by Cassini on November 25 2016.
NASA/JPL-Caltech/SSI/Kevin M. Gill