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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents

ID: 267114.0, MPI für Meteorologie / Atmosphere in the Earth System
Global mean cloud feedbacks in idealized climate change experiments
Authors:Ringer, M. A.; McAvaney, B. J.; Andronova, N.; Buja, L. E.; Esch, M.; Ingram, W. J.; Li, B.; Quaas, J.; Roeckner, E.; Senior, A.; Soden, B. J.; Volodin, E. M.; Webb, M. J.; Williams, K. D.
Date of Publication (YYYY-MM-DD):2006-04
Title of Journal:Geophysical Research Letters
Journal Abbrev.:Geophys. Res. Letts.
Sequence Number of Article:L07718
Copyright:Copyright 2006 by the American Geophysical Union
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Global mean cloud feedbacks in ten atmosphere-only climate models are estimated in perturbed sea surface temperature (SST) experiments and the results compared to doubled CO2 experiments using mixed-layer ocean versions of these same models. The cloud feedbacks in any given model are generally not consistent: the sign of the net cloud radiative feedback may vary according to the experimental design. However, both sets of experiments indicate that the variation of the total climate feedback across the models depends primarily on the variation of the net cloud feedback. Changes in different cloud types show much greater consistency between the two experiments for any individual model and amongst the set of models analyzed here. This suggests that the SST perturbation experiments may provide useful information on the processes associated with cloud changes which is not evident when analysis is restricted to feedbacks defined in terms of the change in cloud radiative forcing.
Free Keywords:0321 Atmospheric Composition and Structure: Cloud/radiation interaction; 1630 Global Change: Impacts of global change (1225); 3310 Atmospheric Processes: Clouds and cloud feedbacks; 3305 Atmospheric Processes: Climate change and variability (1616, 1635, 3309, 4215, 4513); 3337 Atmospheric Processes: Global climate models (1626, 4928)
External Publication Status:published
Document Type:Article
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/Atmosphere in the Earth System
External Affiliations:Hadley Centre, Met Office, Exeter, UK; Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia; National Center for Atmospheric Research, Boulder, Colorado, USA; Climate Research Group, Department of Atmospheric Sciences, University of Ilinois at Urbana-Champaign, Urbana, Illinois, USA; Rosenstiel School for Marine and Atmospheric Sciences, University of Miami, USA; Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, Russia
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