【摘要】 将雷达资料计入ＰＳＵ／ＮＣＡＲ中尺度模式，对江淮流域暴雨实例进行了模拟实验、在工作中，雷达资料经过处理加入到模式中，改变初始湿度场分析，然后作２４小时数值模拟，并与控制试验作比较。结果表明：加入雷达资料后的数值模拟预报，由于增强了暴雨区及其邻近区域对流层中低层水汽和辐合上升运动，雨区位置和雨量中心值比控制试验更接近实况。更多还原

【Abstract】 Numerical simulations of two heavy rainfall cases in the Changjiang Huaihe river basin have been came(l out with radar data incorporating into thePSU/NCAR mesoscale model. The radar data are used to change initial humidityanalyst s obtained by conventional radiosound data and then simulations areperformed and compared with the control cases. Results show that both of theheavy rainfall distribution and its maximum amounts in sensitivity cases arefurther improved than those without using radar data. It implies that theenhancement of humidity by radar data and subsequent divergence circulation andascending motion at the middle and lower troposphere over the rainfall regionis essential for improving the results of heavy rainfall numerical simulations.更多还原