Continental heat gain in the global climate system

Details Continental heat gain in the global climate system Continental heat gain in the global climate system

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29h...8b&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 8, pp. 8-1, CiteID 1167, DOI 10.1029/2001GL014310

Physics

16

Global Change: Climate Dynamics (3309), Global Change: Solid Earth, Global Change: Atmosphere (0315, 0325), Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Paleoclimatology

Scientific paper

Recent estimates have shown the heat gained by the ocean, atmosphere, and cryosphere as 18.2 . 1022 J, 6.6 . 1021 J, and 8.1 . 1021 J, respectively over the past half-century. However, the heat gain of the lithosphere via a heat flux across the solid surface of the continents (29% of the Earth's surface) has not been addressed. Here we calculate that component of Earth's changing energy budget, using ground-surface temperature reconstructions for the continents. In the last half-century there was an average flux of 39.1 mW m-2 across the land surface into the subsurface, leading to 9.1 . 1021 J absorbed by the ground. The heat inputs during the last half-century into all the major components of the climate system - atmosphere, ocean, cryosphere, lithosphere-reinforce the conclusion that the warming during the interval has been global.

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