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Wednesday, July 25, 2012

Jason Box: Updated map of Greenland ice sheet albedo decline -- ~2 standard deviations below the 2000-2012 average


updated map of ice sheet albedo decline


by Jason Box, meltfactor blog, July 25, 2012

It’s been 1 month since I updated this map. I had to re-adjust the color scale from the earlier post to accommodate greater values. The July 1-20, 2012, anomaly is off the scale for the albedo change I had established in earlier examinations of data beginning in year 2000.
Map showing where the albedo reduction is greatest: the southern ‘saddle’ region, the peripheral low elevation areas, and the northwest.
Averaged over the whole of the ice sheet, for nearly 2 months now, the ice sheet albedo has been ~2 standard deviations below the 2000-2012 average.


Averaged over the whole of the ice sheet, for nearly 2 months now, the ice sheet albedo has been ~2 standard deviations below the 2000-2012 average.
Earlier blog entries discuss these albedo visualizations; herehere and here.


http://www.meltfactor.org/blog/?p=580

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