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Arctic ice sheet

State of the Poles - 9/7/10

by: WeatherDem

Thu Sep 09, 2010 at 17:11:10 PM MST

The state of global polar sea ice at the beginning of September 2010 is once again very poor compared to   climatological conditions (1979-2008).   The Arctic ice extent is far, far below average for this time of year.  The Antarctic sea ice extent is above average, but not nearly so much as was the case at the beginning of August.  Unfortunately, global sea ice extent has fallen to ~18  million sq. km., something that has happened in only 2 previous Septembers: in 2007 and 2008.  The Northwest Passage and the Northern Sea Route are largely free of  ice, allowing the Arctic Ocean to potentially be circumnavigated.

Each month and each year that goes by provides additional proof that the Arctic has entered into a new state; a different state than has existed for 1,000 years or more.  Monthly and yearly weather conditions have varied considerably over the past few years, as one would expect, but the end result has been nearly the same regardless of any specific condition: Arctic sea ice is declining year-over-year.  It is declining at a rate that exceeds scientific estimates from just a few years ago.  Climate change deniers keep prattling on about increasing sea ice, in direct contradiction to the physical realities before them.  I think most of the areas that have sea ice this September will not have sea ice by 2020.  Specific weather or geologic events might delay the year that occurs slightly, but I don't think it will take too much longer to witness an Arctic Ocean that is essentially ice-free.

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State of the Poles - 8/7/10

by: WeatherDem

Sun Aug 08, 2010 at 10:48:03 AM MST

The state of global polar sea ice in July 2010 is somewhat poor compared to   climatological conditions (1979-2008).   The Arctic ice extent once again finds itself far below average extent for this time of year.  In contrast, the Antarctic sea ice extent remains significantly above average conditions.  Given those two quite different stories, the fact that global sea ice extent has once again fallen below 19  million sq. km., just as it has the past five consecutive years and eight out of the past nine, speaks to the dangerously poor condition of Arctic sea ice.

A quick aside: it's not just the regions north of 60 that are experiencing ridiculous warmth this year.  As I'll detail further in my upcoming post on the NASA & NOAA global temperature datasets, numerous areas across the Northern Hemisphere have experienced record breaking heat this summer.  Washington D.C. has witnessed its warmest June-July on record.  Moscow has experienced its warmest temperatures on record, while massive wildfires rage across the Russian countryside - burning both forests and peat bogs (all of which releases even more CO2 into the atmosphere).  All-time record temperatures for country after country has fallen this year - further speaking to the dead seriousness of climate change's effects now beginning to take hold.

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State of the Poles - 5/5/10

by: WeatherDem

Wed May 05, 2010 at 15:41:46 PM MST

The state of polar sea ice in March 2010 is fairly good compared to climatological conditions (1979-2000), which strongly contrasts with the  past few months when global conditions were below climatology.  As it  has done this time of year for a few years in a row, the global sea ice extent increased to the point where it is near climatological values, as this graph demonstrates.  The anomalies observed in 2006 and 2007 become more obvious each time the globe's sea ice increases in Mar/Apr.
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