Arctic dipole anomaly
The Arctic dipole anomaly is a pressure pattern characterized by high pressure on the arctic regions of North America, and a low pressure on the Eurasia region.[1] This pattern sometimes replaces the Arctic oscillation and the North Atlantic Oscillation.[2] It was observed for the first time in the first decade of 2000s and is perhaps linked to recent climate change.[3] The Arctic dipole lets more southern winds into the Arctic ocean resulting in more ice melting.[1] The summer 2007 event played a big role in the record low sea ice extent which was recorded in September.[2] The Arctic dipole has also been linked to changes in arctic circulation patterns that cause drier winters in Northern Europe, but much wetter winters in Southern Europe and colder winters in East Asia, Europe and the eastern half of North America.[2]
[edit] See also
- Abrupt climate change
- Arctic oscillation
- Atlantic Multidecadal Oscillation
- Beaufort Gyre
- Climate of Europe
- Gulf Stream
- Indian Ocean Dipole
- North Atlantic Oscillation
- Pacific Decadal Oscillation
- Pacific-North American teleconnection pattern
- Polar vortex
- Siberian High
[edit] References
- ^ a b "nsidc". 6 July 2010 update. http://nsidc.org/arcticseaicenews/2010/070610.html.
- ^ a b c Masters, Jeff. "The climate is changing: the Arctic Dipole emerges". Weather Underground. Jeff Masters' WunderBlog. http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1398. Retrieved 18 November 2010.
- ^ Zhang, Xiangdong; Asgeir Sorteberg, Zhang Jing, Rüdiger Gerdes and Josefino C. Comiso (18 November 2008). "Recent radical shifts of atmospheric circulations and rapid changes in Arctic climate system". Geophysical Research Letters 35 (L22701): 7. Bibcode 2008GeoRL..3522701Z. doi:10.1029/2008GL035607. http://www.agu.org/pubs/crossref/2008/2008GL035607.shtml. Retrieved 18 November 2010.
[edit] External links
- Arctic Sea Ice News & Analysis - July 6, 2010
- Warm Arctic-Cold ContinentsPDF (13.11 MB)
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