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Arctic temperatures in the 20th century, modeled and observed

Observed Arctic winter land temperatures and IPCC model recreations for the 20th century. Note that although these model runs are able to capture the range of Arctic warm and cold periods, the timing of the peaks varies, suggesting that the early 20th century warming was due to random causes, while the increases at the end of the century shown by all the models supports CO2 as an external forcing of the Arctic climate system.

Year: 2007

From collection: Global Outlook for Ice and Snow

Cartographer: Hugo Ahlenius, UNEP/GRID-Arendal

Tags: Antarctica Arctic tundra Climate Change Indigenous Peoples polar bear

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