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GOTW: Ice extent

This time of year, there’s a lot of talk about what the ice at the top of the planet is doing, so here’s an Arctic ice eye candy round up. Consider it a brief right-brain vacation; I’ll get back to flow charts and numbers and other left-brain things soon.

On September 15-16, 2007, at the time of the Arctic sea ice minimum, relatively cloud-free skies enabled the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra to observe much of the sea ice and open ocean throughout the Arctic. Overlaid onto the image are sea ice minima from 2007 (medium blue), the previous record low from 2005 (light blue), and the long-term average from 1979-2000 (gray). The 2007 minimum, which correlates closely with the ice visible through clouds in this image, fell substantially below previous records. Image by Terry Haran, National Snow and Ice Data Center, University of Colorado, Boulder, using NASA MODIS data.

The graphic and above text is here.

How are we doing this year? Just barely above the 2007 record:

The graphic is here.

But ice concentration is important, too:

The graphic is here.

If you’d like a 3D view:

The graphic is in this directory, along with a bunch of other imagery.

Finally, if you’re curious about what’s happening at the other end of the planet, here’s the ice extent for Antarctica, which shows we’re just barely above the long-term trend:

The graphic is here.

Of course, you can find these graphics (and more!) via the latest version of the Quick Graphs page.

Visit Lou’s Graphs Page.

TCOE is on Twitter, too

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