TY - JOUR
T1 - Climate response to volcanic forcing
T2 - Validation of climate sensitivity of a coupled atmosphere-ocean general circulation model
AU - Yokohata, Tokuta
AU - Emori, S.
AU - Nozawa, T.
AU - Tsushima, Y.
AU - Ogura, T.
AU - Kimoto, M.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/11/16
Y1 - 2005/11/16
N2 - 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.
AB - 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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U2 - 10.1029/2005GL023542
DO - 10.1029/2005GL023542
M3 - Article
AN - SCOPUS:28144436452
VL - 32
SP - 1
EP - 4
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 21
M1 - L21710
ER -