- Related Research Areas
- Climate Variability & Change, Water & Energy Cycles
Cloud feedbacks are still a major source of uncertainty in climate model predictions of future climate change. The second phase of the Cloud Feedback Model Intercomparison Project (CFMIP-2) intents to make an improved assessment of cloud feedbacks by making progress in our understanding of cloud-climate feedback processes and in our evaluation of model cloud properties and behavior using satellite and conventional observations. This proposal requests support to establish the participation of the NASA/GISS climate model in CFMIP-2 and to create and run a CFMIP Diagnostic Subproject that will study cloud feedbacks in the midlatitude regions resulting from interactions between clouds and baroclinic storm dynamics. In more detail, we will first run the proposed CFMIP-2 simulations with the GISS GCM and submit the results to the CFMIP2 database. We will then apply the MAP Climatology of Midlatitude Storminess (MCMS) method, developed at NASA/GISS under our current MAP proposal, to current and future climate runs of the models included in the CFMIP-II database. The objective is to study how the storminess indicators change with climate warming. We will combine the MCMS method with clustering and compositing techniques to study cloud-dynamics relationships in the CFMIP-2 models. Finally, we will apply attribution methods to study the feedbacks produced by midlatitude dynamics and cloud changes in the different CFMIP-II models and determine the contribution of such feedbacks to the overall model climate sensitivity.
Project PI: George Tselioudis/NASA/GISS
NASA Goddard Institute for Space Studies 2880 Broadway New York, NY 10025 USA
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