Preliminary Evaluation of Cloud Fraction Simulations by GAMIL2 Using COSP  

作　　者：DONG Li LI Li-Juan HUANG Wen-Yu WANG Yong WANG Bin 

机构地区：[1]State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Dynamics （LASG）, Institute of Atmos-pheric Physics （IAP）, Chinese Academy of Sciences, Beijing 100029, China [2]Ministry of Education Key Laboratory for Earth System Modeling, and Center for Earth System Science, Tsinghua University, Beijing 100084, China

出　　处：《Atmospheric and Oceanic Science Letters》2012年第3期258-263,共6页大气和海洋科学快报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China (863 Program) (Grant No. 2010AA012304);the National Basic Research Program of China (973 Program) (Grant No.2010CB951904);the China Meteorological Administration R &D Special Fund for Public Welfare (meteorology) (Grant No.GYHY201006014);the National Natural Science Foundation of China (Grant Nos. 41023002 and 41005053)

摘　　要：The Cloud Feedback Model Intercomparisons Project (CFMIP) Observation Simulator Package (COSP) is adopted in the Grid-point Atmospheric Model of IAP LASG (GAMIL2) during CFMIP at Phase II to evaluate the model cloud fractions in a consistent way with satellite observations. The cloud simulation results embedded in the Atmospheric Model Intercomparison Project (AMIP) control experiment are presented using three satellite simulators: International Satellite Cloud Climatology Project (ISCCP), Moderate Resolution Imaging Spectroradiometer (MODIS), and Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) lidar onboard the Cloud- Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO). Overall, GAMIL2 can produce horizontal distributions of the low cloud fraction that are similar to the satellite observations, and its similarities to the observations on different levels are shown in Taylor diagrams. The discrepancies among satellite observations are also shown, which should be considered during evaluation.The Cloud Feedback Model Intercomparisons Project （CFMIP） Observation Simulator Package （COSP） is adopted in the Grid-point Atmospheric Model of IAP LASG （GAMIL2） during CFMIP at Phase II to evaluate the model cloud fractions in a consistent way with satellite observations. The cloud simulation results embedded in the Atmospheric Model Intercomparison Project （AMIP） control experiment are presented using three satellite simulators： International Satellite Cloud Climatology Project （ISCCP）, Moderate Resolution Imaging Spectroradiometer （MODIS）, and Cloud-Aerosol Lidar with Orthogonal Polarization （CALIOP） lidar onboard the Cloud- Aerosol Lidar and Infrared Pathfinder Satellite Observations （CALIPSO）. Overall, GAMIL2 can produce horizontal distributions of the low cloud fraction that are similar to the satellite observations, and its similarities to the observations on different levels are shown in Taylor diagrams. The discrepancies among satellite observations are also shown, which should be considered during evaluation.

关 键 词：COSP GAMIL cloud fraction satellite simu- lator 

分 类 号：P426.5[天文地球—大气科学及气象学] V448.2[航空宇航科学与技术—飞行器设计]