两组辐射方案对中国短期天气过程影响的比较和探讨  

Impact of Two Group Radiation Parameterization Schemes on Simulation of Short-Range Weather Process in China

作　　者：王曼[1] 沈元芳[2] 韩慎友[3] 钟青[3] 寿绍文[4] 

机构地区：[1]云南省气象科学研究所,昆明650034 [2]中国气象科学研究院,北京100081 [3]中国科学院大气物理研究所,北京100029 [4]南京信息工程大学大气科学系,南京210044

出　　处：《大气科学》2005年第4期654-670,共17页Chinese Journal of Atmospheric Sciences

基　　金：中国科学科院知识创新工程重要方向项目KZCX3SW213;国家自然科学基金资助项目49675267

摘　　要：为了比较长短波辐射方案对中国短期天气过程模拟的影响,并进一步完善中尺度模式MM5中的辐射过程的参数化方案,将WRF中Goddard短波辐射参数化方案移植到模式MM5中。利用移植的方案和MM5模式原有的参数化方案,设计了两组试验方案。通过对2002年第16号台风个例和2002年12月19～24日北方降雪的个例模拟,结果表明:选用不同的辐射参数化方案对两个个例模拟结果具有较明显的影响,较详细的长短波辐射参数化方案组合模拟的各种辐射量和云更加细致合理地反映地形、台风、副高和槽脊的结构和位置;台风降水中心强度改进近三分之一,北方降雪强度也有一定的改进,更加接近实况。In order to compare the impact of radiation parameterization schemes on simulated short-range weather process and improve the radiation parameterization schemes in Mesoscale Model Version 5 (MM5), the scheme of Goddard short-wave radiation parameterization has been replanted from Weather Research and Forecast Model(WRF)to MM5. With the planted scheme and radiation parameterizations in MM5 two groups of experiment schemes have been designed to simulate ‘Sinlaku’ typhoon (2002) and the case of snowfall occurred in 1924 December 2002. The results show that selection of radiation parameterization schemes has distinct impact on the simulation. The results simulated by the group with the detailed long-wave and short-wave radiation parameterization scheme reflect the structure and location of cloud and radiation on plateau terrain, typhoon, subtropical high and trough/ridge more particularly and reasonably; the intensity of typhoon rain center is improved about 1/3, and there are also some improvements on the intensity of north heavy snow, which more approaches the observation.

关 键 词：辐射参数化 短期预报 数值试验 MM5模式 

分 类 号：P435[天文地球—大气科学及气象学]