sunshine hours

August 27, 2015

Sea Ice Extent – Day 238

Global_Sea_Ice_Extent_Zoomed_2015_Day_238_1981-2010 Antarctic_Sea_Ice_Extent_Zoomed_2015_Day_238_1981-2010 Arctic_Sea_Ice_Extent_Zoomed_2015_Day_238_1981-2010

South / North



  1. How in 20-30 days can we go from +2 dev to -2 dev?

    Does this match A change in temps (Antarctica)?

    Comment by John — August 28, 2015 @ 5:11 AM | Reply

    • I’ve been wondering what happened that changed the rate of Antarctic sea ice extent accumulation this year, about 40 days ago. Did wind patterns shift? Has it been more stormy than normal? Nothing about gyres impeding ice formation in the news – it would be nice if the experts at NOAA would do a little more discussion rather than simply saying “hottest year ever” especially since declining sea ice extent plays into their doom-and-gloom predictions.

      Comment by AZ1971 — August 30, 2015 @ 8:37 AM | Reply

  2. Shocking news from the Arctic: Water extent today in the Arctic nearly matches 2014 at annual ice minimum.

    Comment by Ron Clutz — August 28, 2015 @ 8:07 AM | Reply

    • Am I correct in my understanding that the ozone hole naturally depletes over the Antarctic due to the extreme cold and lack of direct insolation for large parts of the year? And since ozone absorbs IR at a different wavelength spectrum than either CO2 or methane, isn’t a hole a GOOD thing?

      Comment by AZ1971 — August 30, 2015 @ 8:34 AM | Reply

      • Ozone is a greenhouse gas when it’s low level, while higher-level ozone protects us from harmful radiation from the Sun.
        The ozone layer is a good thing, but ozone that is low in the atmosphere is bad.
        So in answer to your comment, the ozone hole is a bad thing. I’m a bit confused about your question but hope this answers it.

        Comment by Ecology Liz — August 30, 2015 @ 9:19 AM

  3. Arctic ice extent has now passed the 2014 minimum.

    Comment by Ron Clutz — August 29, 2015 @ 7:56 AM | Reply

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