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NSIDC Starts Graphing Greenland Ice Melt

For years, the National Snow and Ice Data Center (NSIDC) has been sharing daily updates of the area (“extent”) of sea ice coverage in the Arctic ocean, charting current conditions in comparison to the 1979-2000 average for purposes of comparison. Current levels consistently lie two standard deviations below that long-term average, making the NSIDC Arctic […]

Surprise Late-Season Melt: Arctic Sea Ice Extent Falls Below 2008 Level

The melting of the Arctic sea ice literally crossed another line yesterday, as the area of Arctic sea ice fell below the level of two years ago:

The collapse of the Arctic sea this year is only surpassed by the calamity of 2007. The four lowest years of Arctic sea ice extent are the […]

Arctic Sea Ice Extent, October 27 2009: 6 Standard Deviations Below the 1979-2000 Mean

The latest data on sea ice extent in the Arctic Ocean includes information up through October 27, 2009:

Source: National Snow and Ice Data Center

The National Snow and Ice Data Center’s standard for measuring a notable deviation from the 1979-2000 sea ice average is two standard deviations, which is a reasonably strong standard, […]

Ice Extent Sensor Fails for One Month, Global Warming Doubters Go Ape

This morning, another person who also goes by the name of Jim left this comment to a post regarding data on Arctic sea ice extent collected by the National Snow and Ice Data Center:

OK, all this data must be considered faulty because the National Snow and Ice Data Center now admits their sensor has […]

Arctic Sea Ice Reaches Lowest Extent for the Year, Surpassed in Melt only by 2007

According to the National Snow and Ice Data Center, the Arctic ice has melted to its greatest extent and, as winter creeps in, is beginning to refreeze. As the following graph from the NSIDC shows, the extent of Arctic ice this year is far below the average for years past, and the amount of open […]