Chaitanya's Random Pages

October 28, 2012

The declining arctic sea ice

Filed under: climate and weather — ckrao @ 10:30 am

The following graphs are cause for concern. They show that

(1) the area of arctic ice at its minimum yearly extent (usually in September) was this year only a half of the average value of the 1980s.

(2) the volume of arctic ice at its minimum yearly extent  is on the decline with this year’s level just a fifth of that in 1979!

(3) Since the volume is decreasing at a faster rate than the area, this indicates that the mean ice thickness is also decreasing.

(Data from here and here.)

More on this at the following links.

Poles apart: A record-breaking summer and winter – Arctic Sea Ice News & Analysis, NSIDC

Ice records fall at both poles – New Scientist

Arctic sea ice graphs (Nevin Acropolis)

PIOMAS September 2012 (minimum) – Arctic Sea Ice in Arctic Sea Ice Blog (Nevin Acropolis)

Dr. Jeff Masters’ WunderBlog : Earth’s attic is on fire: Arctic sea ice bottoms out at a new record low – Weather Underground

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