arctic.io

50 Days with CGC HEALY in the Ice

Oct. 1, 2011

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Having a sailing webcam in the Arctic fascinated me from the first day I’ve found the link. Although it is only one image per hour the insight is incomparable, well despite spending some time in the Arctic for yourself on an icebreaker.

But the tremendous amount of photos leads to perception stress and some kind of overview was needed to grasp to whole picture and not to get lost in details. I hope the above result of a few hours number crunching serves this purpose (click the image).

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Is this the Arctic's Polar Ice Pack July 202X?

Sept. 16, 2011

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Arctic Sea Ice Zoom

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More Envisat Radar Images

Sept. 7, 2011

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Sea Ice Radar Envisat ESA Zoom

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Terry started to contribute with more daily Envisat radar zooms - highly appreciated.

If you want to compare changes from day to day open the links in multiple browser tabs and switch between them.

I'll update this list as new links arrive. So far we have:

Credit goes DTU Space and seaice.dk.

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Arctic Zoom with fresh Snow

Sept. 5, 2011

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Zoom Greenland Arctic

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Another high resolution Arctic zoom image contributed by Terry. It features a clear view on most parts of the open North-West-Passage and fresh snow covering Greenland's North.

Microwave versus Envisat Radar Satellite Images

Sept. 2, 2011

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Sea Ice Concentration Satellite ESA Zoom

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Envisat's radar images reveal a high fragmentation of the sea ice. It seems the algorithms using microwave echo to generate concentration maps are not optimized for the current state of the 'ice pack'.

While ESA's satellite operates with a resolution of 30mx30m, the pixel size of the AMSR-E instrument is factor 200 lower. Compare out for example the North of the Laptev Sea.

Also interesting is how the different microwave echo approaches depend on the resolution to calculate sea ice extent.

The NSDIC prefers a low resolution instrument for historical reasons and sees the extent of 2011 currently ...

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A normal Day on Earth

June 21, 2011

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Zoom

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A usual view from NASA's Terra satellite. Captured during day 2011-05-21. (Size: 8192x x 4096)

Nares Strait

June 18, 2011

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Zoom

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This ice bridge established during last winter and shows first signs of break up. The radar reveals the structure of blocking floes. Centered on Hans Island, source of a border dispute between Canada and Greenland.

Wildfires in Siberia

May 26, 2011

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Zoom

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The early fire season has been much more active this year than last. The RIA Novisti reports that by the end of May 2010, there had been only 440 fires recorded, but already there has been more than a thousand recorded in the Far East. Most fires have been attributed to human activity.