Sunday, December 04, 2011

2011 Arctic Report

Rapid Change (This Past Year)

Atmosphere (D): Higher temperatures in the Arctic and unusually lower temperatures in some low latitude regions are linked to global shifts in atmospheric wind patterns.

Sea Ice (C-): A shift in the Arctic Ocean system since 2007 is indicated by the decline in ice age and summer extent, and the warmer, fresher upper ocean.

Hydrology (C): Continued dramatic loss of ice sheet and glacier mass, reduced snow extent and duration, and increasing permafrost temperatures are linked to higher Arctic air temperatures.

Moderate Change (This Past Year) 
Marine Ecosystems (C+): Since 1998, biological productivity at the base of the food chain has increased by 20%. Polar bears and walrus continue to lose habitat in Alaskan waters. 

Terrestrial Ecosystems (B-): Increased “greenness” of tundra vegetation in Eurasia and North America linked to increase in open water and warmer land temperatures in coastal regions.


Anonymous said...

[url=]free casino[/url] [url=]online casino[/url] [url=]free casino[/url]

Anonymous said...

[url=]casino spiele online[/url] [url=]online casino[/url] [url=]australian online casino[/url]

Anonymous said...

Come to see us contemporary to buy more information and facts regarding Visit us contemporary to grasp more facts and facts in the matter of [url=]Kalendarze trójdzielne[/url]

Anonymous said...

pennsylvania state board pharmacy baby diaper rash pharmacy