saveliberty
Diamond Member
- Oct 12, 2009
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Yes. And the world's climate scientists all agree. Your doubt about it is based only on your own ignorance and general brainwashed rightwingnut stupidity.NASA did not say that, retard. You're just too stupid to understand what you read.
Here's what NASA actually has to say about the Arctic ice.
Arctic Sea Ice Continues Decline, Hits Second-Lowest Level
NASA
Oct. 4, 2011
(govt. publication - free to reproduce)
WASHINGTON -- Last month the extent of sea ice covering the Arctic Ocean declined to the second-lowest extent on record. Satellite data from NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado in Boulder showed that the summertime sea ice cover narrowly avoided a new record low.
The Arctic ice cap grows each winter as the sun sets for several months and shrinks each summer as the sun rises higher in the northern sky. Each year the Arctic sea ice reaches its annual minimum extent in September. It hit a record low in 2007.
The near-record ice-melt followed higher-than-average summer temperatures, but without the unusual weather conditions that contributed to the extreme melt of 2007. "Atmospheric and oceanic conditions were not as conducive to ice loss this year, but the melt still neared 2007 levels," said NSIDC scientist Walt Meier. "This probably reflects loss of multiyear ice in the Beaufort and Chukchi seas as well as other factors that are making the ice more vulnerable."
Joey Comiso, senior scientist at NASA's Goddard Space Flight Center in Greenbelt, Md., said the continued low minimum sea ice levels fits into the large-scale decline pattern that scientists have watched unfold over the past three decades.
"The sea ice is not only declining, the pace of the decline is becoming more drastic," Comiso said. "The older, thicker ice is declining faster than the rest, making for a more vulnerable perennial ice cover."
While the sea ice extent did not dip below the 2007 record, the sea ice area as measured by the microwave radiometer on NASA's Aqua satellite did drop slightly lower than 2007 levels for about 10 days in early September, Comiso said. Sea ice "area" differs from extent in that it equals the actual surface area covered by ice, while extent includes any area where ice covers at least 15 percent of the ocean.
Arctic sea ice extent on Sept. 9, the lowest point this year, was 4.33 million square kilometers (1.67 million square miles). Averaged over the month of September, ice extent was 4.61 million square kilometers (1.78 million square miles). This places 2011 as the second lowest ice extent both for the daily minimum extent and the monthly average. Ice extent was 2.43 million square kilometers (938,000 square miles) below the 1979 to 2000 average.
This summer's low ice extent continued the downward trend seen over the last 30 years, which scientists attribute largely to warming temperatures caused by climate change. Data show that Arctic sea ice has been declining both in extent and thickness. Since 1979, September Arctic sea ice extent has declined by 12 percent per decade.
"The oldest and thickest ice in the Arctic continues to decline, especially in the Beaufort Sea and the Canada Basin," NSIDC scientist Julienne Stroeve said. "This appears to be an important driver for the low sea ice conditions over the past few summers."
Climate models have suggested that the Arctic could lose almost all of its summer ice cover by 2100, but in recent years, ice extent has declined faster than the models predicted.
Sea ice? Your going to blame atmospheric CO2 on melting sea ice?
How about pink unicorns, while you're at it. LOL.How about shifting ocean currents?
Arctic sea ice continues to shrink, even in frigid winter
Alaska Dispatch
Jan 09, 2012
(excerpts)
Even as winter clamps down, our polar ice cap continues to dwindle. Despite the arrival of frigid winter temperatures north of Alaska, the sea ice of the Arctic Ocean ended 2011 far below average in both extent and volume, continuing its decades-long shrink toward summer oblivion, according to the most recent estimates posted online by polar observers. The total mass of ice -- its surface footprint plus the bulk hidden beneath the surface -- has never been lower for this time of year. The area covered was third smallest since 1979, with vast areas of ocean north of Europe remaining ice-free.
The polar cap has now lost almost half of its December volume since 1979 -- with much of the thick, multi-year ice that previously formed the ice cap's bedrock, so to speak, exiting into the Atlantic Ocean during summers. The total amount of ice in the Arctic remained at least 37 percent below the long-term average, explained a new analysis that drew on computer models, satellite feeds and observations by ships and submarines. Ice volume as of Dec. 31 was estimated to be lower than any previous New Year's Eve on record, as depicted on this chart posted by the Polar Science Center at the University of Washington.
The area of the Arctic Ocean covered by at least 15 percent floes averaged only about 4.78 million square miles during December -- the third lowest seen for that month since satellite monitoring began in 1979, the NSIDC said. Only Decembers of 2006 and 2010 were lower for that month, but the five of the six lowest Decembers have all occurred during the past six years. To put this loss into perspective, the Arctic has been losing 3.5 percent of its December ice cover per decade for a generation. An ice-bound wilderness larger than Washington, Oregon, California and Texas combined has completely disappeared from the Far Norths early winter habitat.
Your lack of climate science knowledge is funny. Atmospheric CO2 is not going to change the deep ocean currents. Volcanic action and other factors are far more direct causes. Take some time to actually learn about the subject.