[Vision2020] Arctic Sea Ice Extent Sept. 2010 Surprise, Declines Close to 2008 Second Lowest Extent

[Ted Moffett]

Some may recall the discussion in June 2010 on Vision2020 regarding Anthony
Watts' junk climate science blog "Wattsupwiththat" regarding his assertion
early in the 2010 season, on April 29, 2010, that "the indications are that
we’ll have another summer extent that is higher than the previous year, for
the third year in a row." (
http://wattsupwiththat.com/2010/04/29/another-arctic-sea-ice-milestone/ ).

In the middle of Sept. 2010 the Arctic sea ice extent appeared to have
reached its lowest point of the season, and was increasing, then started to
decrease to a point below the earlier assumed lowest extent, coming very
close to the 2008 second lowest extent.  The 2010 Arctic sea ice extent low
point was well below the low point for the 2009 season, the previous third
lowest extent on record, now the fourth lowest, replaced by the 2010 sea ice
extent as the third lowest; therefore Anthony Watts prediction has not come
true.  Read the information on the Arctic sea ice extent 2010 season at
these websites from the National Snow Ice Data Center:
http://nsidc.org/arcticseaicenews/index.html
http://nsidc.org/images/arcticseaicenews/20101004_Figure2.png

Below is an excerpt from a Vision2020 post I sent that mentions the Anthony
Watts' commentary on Arctic sea ice extent, from April 2010, mentioned
above.  The full post is at this website:

http://mailman.fsr.com/pipermail/vision2020/2010-June/070679.html

Sun, Jun 27, 2010 at 3:04 PM
subject: National Snow Ice Data Center: Arctic Sea Ice Decline During June
Continues Below Record 2007 Low Extent
During June 2010, Arctic sea ice decline has continued at a pace below the
record low 2007 year (  http://nsidc.org/arcticseaicenews/ ,
http://nsidc.org/data/seaice_index/images/daily_images/N_stddev_timeseries.png).

The data on Arctic sea ice extent is updated daily on the NSIDC website,
with a one day lag.  Of course, this trend could change so that 2010 does
not exceed the 2007 record low Arctic sea ice extent.  Note this is not a
discussion of ice volume, or thickness.

Arctic sea ice extent is now on June 27 more below the record 2007 rate of
decline than it was May 31, 2010.  So much for the Arctic sea ice extent
"recovery" promoted by some climate change skeptics confirmation bias
filtered websites (
http://wattsupwiththat.com/2010/04/29/another-arctic-sea-ice-milestone/ ) as
evidence to question the seriousness of anthropogenic climate warming.
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Vision2020 Post: Ted Moffett
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