CFMIP: Towards a better evaluation and understanding of clouds and cloud feedbacks in CMIP5 models
نویسندگان
چکیده
Sandrine Bony, Mark Webb, Christopher Bretherton, Stephen Klein, Pier Siebesma, George Tselioudis and Minghua Zhang 1: Laboratoire de Météorologie Dynamique, IPSL, CNRS, UPMC, Paris, France 2: Hadley Centre for Climate Prediction and Research, Met Office, Exeter, UK 3: Department of Atmospheric Sciences, University of Washington, Seattle, WA, USA 4: PCMDI/LLNL, Livermore, CA, USA 5: KNMI, de Bilt, The Netherlands 6: NASA GISS, and Department of Applied Physics, Columbia University, NY, USA 7: ITPA, MSRC, State University of New York at Stony Brook, Stony Brook, NY, USA
منابع مشابه
Global Energy and Water Cycle Experiment GCSS Teams with CFMIP to Understand the Physical Mechanisms of Low Cloud Feedbacks in Climate Models
Despite progress in recent years in understanding cloud processes and feedbacks in General Circulation Models (GCMs; Bony et al., 2006; Stephens 2005), knowledge is lacking about the physical mechanisms of cloud feedbacks and the causes of model-to-model variation in simulated cloud feedbacks. These issues are related to several factors: (1) the transient and spatial variability of clouds is ty...
متن کاملThe impact of parametrized convection on cloud feedback
We investigate the sensitivity of cloud feedbacks to the use of convective parametrizations by repeating the CMIP5/CFMIP-2 AMIP/AMIP + 4K uniform sea surface temperature perturbation experiments with 10 climate models which have had their convective parametrizations turned off. Previous studies have suggested that differences between parametrized convection schemes are a leading source of inter...
متن کاملContributions of Different Cloud Types to Feedbacks and Rapid Adjustments in CMIP5
Cloud feedbacks and rapid adjustments to an abrupt quadrupling of CO2 are diagnosed in five CMIP5 models using cloud radiative kernels in combination with cloud top pressureand optical depthpartitioned cloud fractions. Upon CO2 quadrupling, clouds exhibit a rapid reduction in fractional coverage, cloud top pressure, and optical depth, each contributing roughly equally to a positive global mean ...
متن کاملOn the interpretation of inter-model spread in CMIP5 climate sensitivity estimates
This study diagnoses the climate sensitivity, radiative forcing and climate feedback estimates from eleven general circulation models participating in the Fifth Phase of the Coupled Model Intercomparison Project (CMIP5), and analyzes inter-model differences. This is done by taking into account the fact that the climate response to increased carbon dioxide (CO2) is not necessarily only mediated ...
متن کاملComparison of Two Different Cloud Climatologies Derived from CALIOP-Attenuated Backscattered Measurements (Level 1): The CALIPSO-ST and the CALIPSO-GOCCP
Two different cloud climatologies have been derived from the same NASA–Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP)-measured attenuated backscattered profile (level 1, version 3 dataset). The first climatology, named Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations–Science Team (CALIPSO-ST), is based on the standard CALIOP cloud mask (level 2 product, version 3), ...
متن کامل