Update 20150304.
Changes from 20150225.
Extent: -147.5 (-203k vs 2014, -597k vs 2013, -863k vs 2012)
Area: -113.0 (+32k vs 2014, -668k vs 2013, -760k vs 2012)
Both extent and area declined this week, on average about -20k/day. Regionally most of the declines were in the Barents, Bering and Greenland Seas. This brings total extent well below the previous years, but area is still a bit above 2014. The current maximum extent was reached at Feb 15 (16 for area), levels are now -250k (-360k for area) below this preliminary figures. That is not a gap that cannot be bridged, last year there was a week increase of over +500k (Mar 9-16 2014), 2012 saw a similar jump. The winds have to cooperate of course, otherwise 2015 melting season will start with an extreme early (and low) maximum.
You will find the updated graphs in the
top postThe details (in 1000 km
2):
Extent:
Central Arctic Basin East Siberian Sea Laptev Sea
-26.5 0.4 0.5
Kara Sea Barents Sea Greenland Sea
5.2 -99.7 -36.1
Baffin/Newfoundland Bay St. Lawrence Hudson Bay
35.1 10.2 0.0
Canadian Archipelago Beaufort Sea Chukchi Sea
2.8 0.6 5.6
Bering Sea Sea of Okhotsk Total Extent
-81.9 36.5 -147.5
Area:
Central Arctic Basin East Siberian Sea Laptev Sea
-26.5 6.0 4.7
Kara Sea Barents Sea Greenland Sea
-16.4 -90.5 -38.1
Baffin/Newfoundland Bay St. Lawrence Hudson Bay
26.0 17.0 2.2
Canadian Archipelago Beaufort Sea Chukchi Sea
14.6 -7.4 14.9
Bering Sea Sea of Okhotsk Total Area
-64.8 45.2 -113.0