This graph shows the average monthly arctic sea ice extent each september since 1979 derived from satellite observations. This was 620000 square kilometers 239000 square miles below the 1981 to 2010 february average and 710000 square kilometers 274000 square miles above the record low mark for february set in 2018.
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Nasa current arctic sea ice extent. The plots and color coded maps are chosen to provide information about the current state of the sea ice cover and how the most current daily data available compare with the record lows and record highs for the same date during the satellite era. September arctic sea ice is now declining at a rate of 128 percent per decade relative to the 1981 to 2010 average. The arctic sea ice cover.
Arctic sea ice minimum. Nasa earth observatory 2019 september 27 2019 arctic sea ice minimum is second lowest. Sea ice in the arctic appears to have hit its annual maximum extent after growing through the fall and winter.
Monthly images show sea ice extent with an outline of the 30 year 1981 2010 median extent for that month magenta line. The monthly sea ice index provides a quick look at arctic wide changes in sea ice. Arctic sea ice extent for february 2020 was 1468 million square kilometers 567 million square miles the thirteenth lowest in the satellite record.
Arctic sea ice reaches its minimum each september. This years maximum extent peaked at 571 million square miles 1478 million square kilometers and is 332000 square miles 860000 square kilometers below the 1981 to 2010 average maximum equivalent to missing an area of ice larger than the state of texas. The sea ice analysis tool allows users to analyze monthly averaged or daily sea ice extent and concentration via interactive maps.
The 2019 wintertime extent reached on march 13 ties with 2007s as the seventh smallest extent of winter sea ice in the satellite record according to scientists at the nasa supported national snow and ice data center and nasa. Sea ice concentration is the percent areal coverage of ice within the data element grid cell. It is a source for consistently processed ice extent and concentration images and data values since 1979.
This winter a combination of warmer than average temperatures winds unfavorable to ice expansion and a series of storms halted sea ice growth in the arctic. The sea ice estimates from the national snow and ice data center nasas archive for sea ice data assume that this hole is ice filled. This years maximum extent reached on march 7 at 557 million square miles 1442 million square kilometers.
In addition users can plot monthly ice extent anomalies map sea ice concentration anomalies and display images of trends in sea ice concentration all for a variety of date climatology and trend ranges.
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