Projected temperatures in the 21th century

Projected temperatures in the 21th century (map/graphic/illustration)

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Projected temperatures in the 21th century. Projected Arctic annual land temperature increases for the first half of the 21st century relative to the average temperature for 1980–99. The average of the IPCC models (the blue line) shows an increase of 3ºC by 2050. The averages of the runs from each of the 12 models show increases from 2–4ºC, the range of uncertainty in these model projections.
Sources Wang, M., Overland, J.E., Kattsov, V., Walsh, J.E., Zhang, X. and Pavlova, T. (2007). Intrinsic versus forced variation in coupled climate model simulations over the Arctic during the 20th century. J. Climate, 20(6), 1093-1107
Link to web-site http://www.unep.org/geo/ice_snow
Cartographer/
Designer
Hugo Ahlenius, UNEP/GRID-Arendal
Appears in Global Outlook for Ice and Snow
Published June 2007
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