the Air Vent

Because the world needs another opinion

Cryosphere – Sea Ice Video

Posted by Jeff Id on March 28, 2013

I wanted to see the 2012 ice loss in the Arctic so I updated the video’s.    The first video is full length, the second is just a clip of more recent years.   I repeated the result for the Antarctic which has seen increases in sea ice.

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14 Responses to “Cryosphere – Sea Ice Video”

  1. Jeff,
    Yes, the long period one (last) is especially interesting.

    I’ve made some SST movies which cover the similar periods and area. The ice shows as a region of zero anomaly, although not reliably, because melt ponds etc can show a temp. But it shows the warm water movements etc associated with melting.
    The general collection is here

    Here’s Arctic, actually 12 months up to a few weeks ago.

    And likewise for Antarctic. You can see dynamics of the circumpolar current.

    Arctic 2011
    Antarctic 2011
    Arctic 2007
    etc

    • Jeff Condon said

      Those are excellent Nick. I want to add them to the ice data.

      • Jeff,
        You’re welcome to download them. If you’re using Firefox or Chrome, you can just select, right click and save as. That’s the .ogg version. You can copy the url, change .ogg to .swf, and get a swf version.

        • Jeff Condon said

          I think your link to the data will be sufficient. I just need to spend some time with it and generate some overlaid plots.

          Very nice work though.

  2. NZ Willy said

    Way cool.

  3. kim2ooo said

    Reblogged this on Climate Ponderings.

  4. Reblogged this on grumpydenier and commented:
    So this is what natural variation looks like? I always wondered. /sarc

  5. Matthew W said

    Interesting to watch the short Arctic video and seeing how close it comes to being “Ice Free” and wondering that since the planet has NOT been warming much for the past 20 years, what conditions are causing there to be less Arctic ice and what conditions will be needed to make it “ice free.” (not that being ice free means anything bad for the planet !!!)

    • HaroldW said

      I think it’s a mistake to expect minimum (or average) Arctic ice area to behave with a simple proportionality to temperature (global or otherwise). It would seem to be more likely to react to the integral of temperature, or something along those lines, with the thickness of the winter ice acting to moderate an immediate effect. And there will also be non-linear limiting effects as the ice area shrinks, the inner regions being more isolated from Atlantic and Pacific currents. Even when the Arctic reaches “ice-free” condition at its minimum, it will still have ice in the winter. [Well, I suppose *eventually* it could become ice-free year-round. Probably not until millennia from now, and maybe only if we imported some CO2 from Venus. Or pumped tropical surface water to the Arctic Ocean. The Arctic has good reason to be very cold in the winter.]

  6. michael hart said

    Schweet. I like the Antarctic one best. It looks like the monster from the white lagoon is trying to make a lunge for South Georgia.

    Some of the small fragments “spat out” seem remarkably persistent. Are they calves from the Continental sheets?

  7. Gary said

    Why do the Northamerican Great Lakes show specks of ice year round? It appears to be mostly on their eastern shores. Obviously, an error in the data processing, but what’s the cause?

  8. w.w.wygart said

    One interesting trick to play with the antarctic series is to imagine the brown antarctic continent as white [maybe it can also be done in the video] to show the real extent of the ice cover that is there year round rather than just the diff in sea ice coverage year to year. It might be interesting to mash the NH snow cover data set to the sea ice data set and sea what that looks like as well.

    W^3

  9. [...] [...]

  10. Eric Anderson said

    Jeff, thanks for doing these. Very useful.

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