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Physical sciences/Earth sciences/Climatology/Paleoclimatology/Last glacial maximum

Earth’s climate will warm in response to a doubling of atmospheric carbon dioxide compared to pre-industrial levels, but this increase may be slightly smaller than previous studies have estimated, researchers say.

This amount of warming, which refers specifically to global average surface air temperature, is called Earth’s climate sensitivity. Researchers need a better handle on this number in order to better assess the impacts of future climate change.