【摘要】 应用GMS-5静止气象卫星云图导出的风场产品—云迹风资料对REM中尺度η坐标有限区域数值模式的初始风场进行改进处理,模拟了2001年7月27～28日及8月16、18～19日共5天的降水过程,通过初始场的改进进行控制试验(CTE)和敏感性试验(STE)。研究结果表明,利用卫星云图导出的云迹风场资料,对中尺度数值模式的初始风场进行改进可以提高模拟精度,从而改善因测站稀疏造成的中小尺度系统漏报的不足,提高降水的预报精度。更多还原

【Abstract】 The wind field datacloud drift wind data were introduced by GMS 5 stationary satellite cloud image, which have been used to improve the initial wind field of limitedarea model of REM. Two rain processes over West China on 27, 28 July 2001 and three rainfall processes over East China on 16, 18, 19 August 2001 have been simulated. Both the control test experiment and sensitivity test experiment have been performed through the improvement of initial wind fields. The results show that the cloud drift wind data introduced by satellite cloud image can improve the initial wind fields of mesoscale numerical simulation, rise the simulation precision, and capture some meso and smallscale systems that are usually omited because of the observation station sparseness.更多还原