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Detailed Reference Information |
Yokohata, T., Emori, S., Nozawa, T., Tsushima, Y., Ogura, T. and Kimoto, M. (2005). Climate response to volcanic forcing: Validation of climate sensitivity of a coupled atmosphere-ocean general circulation model. Geophysical Research Letters 32: doi: 10.1029/2005GL023542. issn: 0094-8276. |
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Two versions of a coupled atmosphere-ocean general circulation model (GCM) with different climate sensitivities are tested on global cooling following the Pinatubo volcanic eruption to investigate the validity of high climate sensitivities. The higher-sensitivity version, with climate sensitivity of 6.3 K for doubled CO2 forcing, overestimates cooling due to the volcanic eruption, whereas the lower-sensitivity version (4.0 K) produces results consistent with observations. A simple scheme for climate feedback analysis is devised and it is found that the difference between the two versions is attributed to cloud-albedo feedback. This validation method is expected to provide additional constraints on climate sensitivity and possibly lead to reduced uncertainties in climate prediction. |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Volcanic effects, Atmospheric Processes, Ocean/atmosphere interactions (0312, 4504) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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