7th Daily Record in 8 Days for Antarctic Sea Ice Extent

July 29 (Day 210) saw the 7th Daily Record in 8 Days for Antarctic Sea Ice Extent. Click graph for bigger. Data is here.

Day 210 was 185,000 sq km higher than the previous record which occurred in 2010). And it was 870,000 sq km higher than the 30 year mean.
Antarctic_Sea_Ice_Extent_Zoomed_2013_Day_210_1981-2010

6 thoughts on “7th Daily Record in 8 Days for Antarctic Sea Ice Extent

  1. See http://www.nasa.gov/topics/earth/features/arctic-antarctic-ice.html

    “The Antarctic minimum extents, which are reached in the midst of the Antarctic summer, in February, [were] around 251,000 square miles more than the average minimum extent since 1979.

    The numbers for the southernmost ocean, however, pale in comparison with the rates at which the Arctic has been losing sea ice – the extent of the ice cover of the Arctic Ocean in September 2012 was 1.32 million square miles below the average September extent from 1979 to 2000. The lost ice area is equivalent to roughly two Alaskas.”

    If these numbers are representative, Arctic would have LOST FIVE TIMES MORE ice than Antarctica gained. So what’s the reason for your preoccupation with Antarctica? Wouldn’t Arctic ice losses deserve 5 times more space and 5 times more dramatic headlines? Particularly given that the Arctic is much more “integrated” in the global climate than Antarctica which is isolated by the circular pattern of winds and ocean currents, ergo Arctic much more relevant to the “global” climate changes.

    1. That “5 times” is only for part of the year. Antarctica is setting records all year round.

      At maximum, Arctic Ice was only 1.5% below the 30 year mean this year.

      So far, Antarctic Sea Ice for this calendar year is averaging 758.000 sq km above the 30 year mean. 2008 was even higher.

      So far, Arctic Sea Ice for this calendar year is averaging 514,000 sq km below the 30 year mean. Six years were lower.

      1. The following 6 years had less average ice to this day than 2013.

        Year / Anomaly
        2005 -639,784
        2010 -639,897
        2012 -642,231
        2007 -792,672
        2006 -844,995
        2011 -918,363

        That will change. But I’m not sure which way.

      2. 1. any “daily” value, or even single year is “weather”, not “climate”. Getting excited about daily records in any given year as if they were telling us something about climate is (deliberately?) misleading. Weather becomes climate only if it repeats itself enough to form a long-term pattern.

        2. changes if ice range in Antarctica do not have the same relevance to the GLOBAL climate as changes in the Arctic, for the reasons I explained in my original comment

        3. your reference point – 30 year mean – is skewed by the fact that in the Arctic they are packed with the record low ice ranges in the last decade (see my third point). If instead we compared 2013 to the mean from, say, 1979-2000 – the 2013 decrease would have been SEVERALFOLD larger than your 1.5% – see Fig 2. in http://nsidc.org/arcticseaicenews/2013/03/annual-maximum-extent-reached/

        4. given that we are talking about climatic trends, i.e. changes happening on decadal scale, what does it tell that
        the TEN LOWEST maximums in the satellite record have OCCURRED IN THE LAST TEN YEARS (2004 to 2013) ?

        (http://nsidc.org/arcticseaicenews/2013/03/annual-maximum-extent-reached/)

      3. The highest Antarctic maximums have all been in the last 10 years. Does that not prove cooling using your logic?

        Your other points are wrong too.

        For the most part, low Arctic ice corresponds with the AMO. As that has started dropping, so has the ice recovered in the months the AMO has dropped. When the AMO drops in June/July/Aug Arctic Ice will completely recover.

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