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ORH_wxman

Arctic Sea Ice Extent, Area, and Volume

401 posts in this topic

Stall speed again on extent. No net increase over the last 9 days. Will probably remain at/near the level it is now for another week with the upcoming warmth and storms as the Atlantic side is chewed up again for the umpteenth time this winter.

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As was mentioned by csnavywx, anomalous warmth looks to return to the Kara Sea (and much of the Arctic), alongside a low approaching ~960 hPa. Not only is this a favorable pattern for Fram export of whatever multiyear ice remains, but temperatures will run close to 30 degrees Celsius above normal once again for portions of the Arctic.

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Could Someone explain why Greenland ice is at a record level with regards to surface mass balance? If there is any sign for this to decrease and get back to normal levels, what is it?C2T7iJbXcAAbtjq.jpg 

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29 minutes ago, Newman said:

Could Someone explain why Greenland ice is at a record level with regards to surface mass balance? If there is any sign for this to decrease and get back to normal levels, what is it? 

More open Arctic ocean -> increased evaporation -> increased water vapor -> increased precipitation.

But GIS Surface Mass Balance is only half of the situation.  It does not include dynamic GIS processes such as glacial calving, basal melting, or meltwater runoff.  Look at the Total Mass Change data for the complete situation.  

Grace_curve_La_EN_20160300.png As you can see, the GIS has lost around 3,600 km3 (3,600 Gtons) of ice since 2003.

 

 

 

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