Figure 2. Regions most at risk of severe weather for the period Saturday, April 26 - Monday, April 28, 2014, as predicted by NOAA's Storm Prediction Center at 4:15 am EDT Wednesday, April 23, 2014.
Arctic sea ice extent during March was 5th lowest in the 36-year satellite record, according to theNational Snow and Ice Data Center (NSIDC). The winter maximum extent of Arctic sea ice came on March 21, and was the 5th lowest such peak on record. Temperatures in the Arctic were 2 - 6°C (4 -11°F) above average during the last half of the month, but a late-season surge in ice extent came as the Arctic Oscillation turned strongly positive the second week of March, with unusually low sea level pressure in the eastern Arctic and the northern North Atlantic.
The associated pattern of surface winds helped to spread out the ice pack, keeping ice extent greater than it would have been. There was a modest increase in thick, multi-year ice over the winter, and the Arctic is in better shape to resist a record summer melt season this year than it was in 2013.
http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2669
No comments:
Post a Comment