Record Minimum – Right On Track

http://arctic-roos.org/

About Tony Heller

Just having fun
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30 Responses to Record Minimum – Right On Track

  1. julienne stroeve says:

    Steve, why not post all the sea ice extent plots?? 🙂

    • Julienne,

      From looking at the images of high concentration ice, it looks to me like Norsex is the closest representation to reality. The instability of 15% ice around the edges makes recent numbers from JAXA and NSIDC look less informative. I expect that by mid-September all the indices will look more like Norsex.

      • Peter Ellis says:

        Oh come off it Steven. Just look at the 2008 line and the wildly unphysical fluctuations it shows. Whatever algorithm ROOS is using, it seems less stable than any of the other sites. It’s obvious that the reason you’re suddenly focusing on this one is because it happens to be reading higher than the rest on this particular day.

        Nevertheless, I do agree with your point that the loose ice round the edge is potentially affecting the measurements at the moment. This has the effect of inflating the extent figures: area figures are closer to 2007 across the board, for ROOS, Cryosphere Today, NSIDC and JAXA,
        http://arctic-roos.org/observations/satellite-data/sea-ice/observation_images/ssmi_ice_area.png

        Thank you for highlighting the fact that the situation may be worse than it looks from the extent graphs… although I’m not sure that’s what you intended to do.

      • Latitude says:

        Peter, I would think it would have the opposite effect…..
        …deflating the extent figures

        Any amount of water confuses the microwaves, and they read it as all water

  2. Ill wind blowing says:

    Steve’s earth is in an alternative universe.

    http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.area.arctic.png

  3. Ill wind blowing says:

    “So you are ready to bet on a record minimum?”

    You never commit yourself to anything, Steve.

    • My forecast is completely clear and on the record – there will be an increase in MYI over last year as there has been every year since 2008.

      • Ill wind blowing says:

        “So you are ready to bet on a record minimum?

        “.My forecast is completely clear and on the record – there will be an increase in MYI over last year as there has been every year since 2008.”

        Why do you switch to MYI when my statement was directed at your statement which in turn was a response to Peter’s statement about SIE?

  4. Ill wind blowing says:

    Latitude:
    “Any amount of water confuses the microwaves, and they read it as all water”

    A joke might be funny the first time around but when you repeat it several times it no longer makes you laugh.

    I’ve been hearing that one for years. I guess that ponding must be getting worse throughout the years. Hmmm, I wonder why that would be? 😉

  5. Ill wind blowing says:

    t“. . . there will be an increase in MYI over last year as there has been every year since 2008.”

    http://www.youtube.com/watch?v=1HRa4X07jdE

  6. I don’t think our eclectic (INTP? Oh, that’s so me!) little friend “Bong Lid Will Win” understands that the monotonic increase in Multi Year Ice puts paid the lie that there is some kind of “Artic iCE DEATh sPIRAl” (or however they might tend to spell & capitalise it).

  7. julienne stroeve says:

    Latitude, the low ice concentrations are clearly visible in the MODIS image that Steve recently posted. While surface melt water does cause the passive microwave algorithms to underestimate the true ice area, you can see the correspondence with the MODIS data quite well, showing that the reduced sea ice concentrations in the Beaufort and Chukchi seas being picked up by the passive microwave data are indeed real. Also, as the air temperatures are getting colder and there is less melt ponding, the microwave data extent #s better match those derived from optical data such as MODIS.

  8. DirkH says:

    Ill wind blowing says:
    August 15, 2011 at 5:09 pm
    “Oh that’s brilliant Steve.

    MYI at the end of WINTER!”

    The MY stands for “Multi-Year”, meaning that it survived at least two years. Two years make two summers and two winters. HTH.

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