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Palerider claims that the Arctic ice is thickening.NASA has found otherwise:Using data from CloudSat and NASA's Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation satellite, they found the total cloud cover over the western Arctic, where most of the ice loss occurred, was 16 percent less over the 2007 melt season than in 2006. The resulting clearer skies in 2007 heated the Arctic surface enough to warm ocean waters by 2.4 degrees Celsius (four degrees Fahrenheit) or enough to melt 0.3 meters (one foot) of sea ice. Anomalous clouds, in addition to other weather factors, helped melt ice that had already thinned due to sustained warming in recent years. The results highlight the importance of weather pattern variability to a warming Arctic environment. "As Arctic sea ice thins, its extent is more sensitive to year-to-year variability in weather and cloud patterns," said Kay. "Our data show that clearer skies this summer allowed more of the sun's energy to melt the vulnerably thin sea ice and heat the ocean surface." http://www.nasa.gov/mission_pages/cloudsat/news/cloudsat-20071212.htmlThe larger point of the article is that increased surveillance platforms such as CloudSat will provide us with more and more precise data regarding this issue. Which is all to the good.
Palerider claims that the Arctic ice is thickening.
NASA has found otherwise:
Using data from CloudSat and NASA's Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation satellite, they found the total cloud cover over the western Arctic, where most of the ice loss occurred, was 16 percent less over the 2007 melt season than in 2006. The resulting clearer skies in 2007 heated the Arctic surface enough to warm ocean waters by 2.4 degrees Celsius (four degrees Fahrenheit) or enough to melt 0.3 meters (one foot) of sea ice. Anomalous clouds, in addition to other weather factors, helped melt ice that had already thinned due to sustained warming in recent years.
The results highlight the importance of weather pattern variability to a warming Arctic environment. "As Arctic sea ice thins, its extent is more sensitive to year-to-year variability in weather and cloud patterns," said Kay. "Our data show that clearer skies this summer allowed more of the sun's energy to melt the vulnerably thin sea ice and heat the ocean surface."
http://www.nasa.gov/mission_pages/cloudsat/news/cloudsat-20071212.html
The larger point of the article is that increased surveillance platforms such as CloudSat will provide us with more and more precise data regarding this issue. Which is all to the good.
