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Bauer et al 2008, Climatic response to anthropogenic sulphate aerosols.pdf727,51 kBAdobe PDFView/Open
Title: Climatic response to anthropogenic sulphate aerosols versus well-mixed greenhouse gases from 1850 to 2000 AD in CLIMBER-2
Authors: Bauer, E.Petoukhov, V.Ganopolski, A.Eliseev, A.V.
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Issue Date: 2008
Published in: Tellus, Series B: Chemical and Physical Meteorology Vol. 60 B (2008), No. 1
Publisher: Abingdon : Taylor and Francis Ltd.
Abstract: The Earth system model CLIMBER-2 is extended by a scheme for calculating the climatic response to anthropogenic sulphur dioxide emissions. The scheme calculates the direct radiative forcing, the first indirect cloud albedo effect, and the second indirect cloud lifetime effect induced by geographically resolved sulphate aerosol burden. The simulated anthropogenic sulphate aerosol burden in the year 2000 amounts to 0.47 TgS. The best guesses for the radiative forcing due to the direct effect are -0.4 W m-2 and for the decrease in short-wave radiation due to all aerosol effects -0.8 W m-2. The simulated global warming by 1 K from 1850 to 2000 caused by anthropogenic greenhouse gases reduces to 0.6 K when the sulphate aerosol effects are included. The model's hydrological sensitivity of 4%/K is decreased by the second indirect effect to 0.8%/K. The quality of the geographically distributed climatic response to the historic emissions of sulphur dioxide and greenhouse gases makes the extended model relevant to computational efficient investigations of future climate change scenarios.
Keywords: aerosol; climate change; global warming; greenhouse gas; radiative forcing; shortwave radiation; sulfur dioxide; sulfur emission
DDC: 550
License: CC BY 4.0 Unported
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