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Arctic Ice Growing Again

Ron Clutz, Science Matters

Arctic ice is presently 472.000 km^2 more than in 2007, and 1.2 million km^2 more than the record setting 2012.


One week ago on day 252 MASIE reported the lowest daily extent of the year at 4.43M km2.  One week later the image above shows how the ice edges have refrozen and extended.  Note also the significant snowfall both in Canada and Russia

Mid September we can see the long predicted collapse of Arctic ice is postponed for yet another year.  The graph shows MASIE reporting ice extents above 4.5M km2 for the month of September.  A dip on day 252 to  4.43M km2 will likely be the daily minimum for the year, since 200k km2 of ice has been added in the last week.  The graph also shows that 2018 is presently 96k km2 above the 11 year average ice extent, 350k km2 more than 2016,  472k km2 more than 2007, and 1.2M km2 (a full Wadham!) more than the record setting 2012.

Interestingly, in September until yesterday NOAA’s officially referenced Sea Ice Index (SII) was showing more ice than MASIE, by about 200k km2.  That means the SII September monthly result will continue the plateau in Arctic ice since 2007.

The table below shows ice extents in the various basins comprising the Arctic Ocean for day 259 for 2018 and 2007 in comparison to the 11 year averages (2007 to 2017 inclusive).

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