7/20/23 NSIDC Greenland Today: Sudden Shift To Southern Heat - Melt Area 50%+ Of Ice Sheet

[hatrack]

Late June ushered in a significant shift in weather and melting for Greenland, particularly for the southern portion of the ice sheet, known as South Dome, where melting is currently on a record pace. Melting along the northern rim of the ice sheet is also greater than average. These changes are a result of a shift in the air circulation, associated to negative North Atlantic Oscillation (NAO) index values. High air pressure now covers the island, bringing warm winds from the southwest and favoring sunnier condition enhancing the surface melt in the ablation zone, for which the extent is now close to the previous records in the summers of 2012 and 2019.

Beginning around June 23, the areal extent of Greenland’s surface melting and runoff increased significantly. Several widespread melting events covering about 800,000 square kilometers (302,000 square miles) or up to 50 percent of the ice sheet occurred on June 27, July 6 to 7, and July 11, as several pulses of warm air swept across the southern portion of the ice sheet and northward around the northern coast. The total number of days with melting are now well above average throughout the southern and southwestern portions of the ice sheet by up to 5 to 15 days, and along its northern flank by about 10 days. Total melt-day extent, the sum of daily melt extents for the season so far, is now sixth highest overall. Melt-day extent over the southern portion of the ice sheet is now at a record high for the 45-year satellite record.

EDIT

https://nsidc.org/greenland-today/

[Think. Again.]

1. wow....

I thought this chart should be repeated:

[bronxiteforever]

4. +1 the Atlantic Ocean temperature map looks

the same. A red line heading well north of normal.

[calguy]

2. Haven't you heard? It's all a cruel hoax.

A GOP congressman told me so.

[honest.abe]

3. Greenland could be the first catastrophic effect of global warming.

This may be necessary to get everyone’s attention.

[Think. Again.]

5. Yes...

...a national public awareness campaign does seem to be noticably missing...