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The Performance of Atmospheric Component Model R42L9 of GOALS/LASG
作者姓名:WU Tongwen  LIU Ping  WANG Zaizhi  LIU Yimin  YU Rucong  WU Guoxiong
作者单位:LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029,LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029,LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029,LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029,LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029,LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing100029
摘    要:This paper examines the performance of an atmospheric general circulation model (AGCM) developed at the State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics (LASG/IAP). It is a spectral model truncated at R42(2.8125°long×1.66°lat) resolution and with nine vertical levels, and referred to as R42L9/LASG hereafter. It is also the new version of atmospheric component model R15L9 of the global ocean-atmosphere-land system (GOALS/LASG). A 40-year simulation in which the model is forced with the climatological monthly mean sea surface temperature is compared with the 40-year (1958-97) U.S. National Center for Environmental Prediction (NGEP) global reanalysis and the 22-year (1979-2000) Xie-Arkin monthly precipitation climatology. The mean DJF and JJA geographical distributions of precipitation, sea level pressure, 500-hPa geopotential height, 850-hPa and 200-hPa zonal wind, and other fields averaged for the last 30-year integrat

关 键 词:全球海洋-大气-陆地系统  数值模型  GOALS/LASG  大气科学  大气循环模型  大气物理学  流体力学

The performance of atmospheric component model R42L9 of GOALS/LASG
WU Tongwen,LIU Ping,WANG Zaizhi,LIU Yimin,YU Rucong,WU Guoxiong.The performance of atmospheric component model R42L9 of GOALS/LASG[J].Advances in Atmospheric Sciences,2003,20(5):726-742.
Authors:WU Tongwen  LIU Ping  WANG Zaizhi  LIU Yimin  YU Rucong  WU Guoxiong
Affiliation:LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
Abstract:This paper examines the performance of an atmospheric general circulation model (AGCM) de-veloped at the State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysi-cal Fluid Dynamics, Institute of Atmospheric Physics (LASG/IAP). It is a spectral model truncated atR42(2.8125°long× 1.66°lat) resolution and with nine vertical levels, and referred to as R42L9/LASG here-after. It is also the new version of atmospheric component model R15L9 of the global ocean-atmosphere-land system (GOALS/LASG). A 40-year simulation in which the model is forced with the climatologicalmonthly mean sea surface temperature is compared with the 40-year (1958 97) U.S. National Centerfor Environmental Prediction (NCEP) global reanalysis and the 22-year (1979-2000) Xie-Arkin monthlyprecipitation clinatology. The mean DJF and JJA geographical distributions of precipitation, sea levelpressure, 500-hPa geopotential height, 850-hPa and 200-hPa zonal wind, and other fields averaged for thelast 30-year integration of the R42L9 model are analyzed. Results show that the model reproduces well theobserved basic patterns, particularly precipitation over the East Asian region. Comparing the new modelwith R15L9/LASG, the old version with coarse resolution (nearly 7.5°long×4.5°lat), shows an obviousinprovement in the simulation of regional climate, especially precipitation. The weaknesses in simulationand future improvements of the model are also discussed.
Keywords:Global ocean-atmosphere-land system (GOALS)  model development  general atmosphericmodel (R42L9)  model performance
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