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Old 25th Jan 2021, 15:27
  #32 (permalink)  
beardy
 
Join Date: Nov 2000
Location: UK
Age: 69
Posts: 1,405
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This last year there was an increase in melting of ice in Greenland because of increased sunshine. Guess what?! There were very, very few airliners on those northerly trans-Atlantic routes that cross Greenland last summer, meaning a loss of all of those cirrus clouds (contrails) and hence more sunshine and more ice melting.
From Carbon Brief

However, unlike in 2019, Greenland has actually had a relatively “normal” year with regard to ice changes at its surface. Yet losses via the breaking off of icebergs remain at the high end compared to the early years of the satellite record, which stretches back to the late 1970s.

The ice sheet ends the season losing about 152bn tonnes when accounting for both surface melting and discharge of icebergs. This means that the ice sheet is continuing to lose ice, though at a slower rate than seen in 2019.
No mention of greater insolation, but emphasis is given to stable high pressure and warmer air.
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