NSIDC

Wet, wet, wet

by Gareth July 19, 2011

Sunshine is pouring down on the Arctic, and the high summer melting season is well under way. This photograph from NASA’s Earth Observatory shows crew from the US Coast Guard cutter Healey collecting a supply drop canister from melt ponds on the surface of the ice in the Beaufort Sea during the current Icescape exercise. [...]

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Gone for good: Arctic Ocean ice free all year by the 2040s?

by Gareth October 18, 2010

A few days ago I used a combination of Arctic sea ice volume data from the University of Washington’s PIOMAS model and NSIDC sea ice extent numbers to project that the Arctic Ocean would be effectively ice-free in late summer within ten years. The key to that exercise was the rate at which the volume [...]

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Five years (threnody for Arctic sea ice)

by Gareth October 16, 2010

Earlier this month the US National Snow & Ice Data Center issued its analysis of this year’s Arctic sea ice minimum — at 4.60 million km2 on September 19, the third lowest extent in the satellite record. However extent (defined here) doesn’t tell you everything about the state of the ice — according to the [...]

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Monday miscellany

by Gareth September 13, 2010

I‘m going to be away from my desk for a few days this week, so here’s a few interesting things to read and reflect on. First up: Wellington’s hosting this year’s New Zealand Soil Carbon Conference at Te Papa from Wednesday to Friday. Keynote speakers are Tim Flannery and Christine Jones, and topics to be [...]

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Arctic sea ice maximum reached, melt starts

by Gareth April 7, 2010

Arctic winter sea ice extent reached its maximum on March 31st, the latest date since satellite records began in 1979 according to the latest sea ice update from the National Snow and Ice Data Centre. The maximum extent was 15.25 million square kilometers. The NASA image above shows the ice extent on March 6th, before [...]

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Third

by Gareth September 18, 2009

The National Snow and Ice Data Centre announced today that this year’s Arctic sea ice minimum extent was likely to have been reached on September 12. It’s the third lowest minimum in the record, behind 2007 and 2008. The image at left shows this year in white, compared with 2007 in darker colours. From the [...]

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