用积云参数及数值预报产品作对流性降水量模拟试验

An Experiment of Simulating Convective Precipitation with Cumulus Parameters and NWP Products

应用部分实时资料和数值预报输出产品，以积云参数化为基础，依据湿绝热过程中饱和湿静力能量守恒原理，并通过克拉贝龙方程转换，实现积云形成所需水汽凝结量及积云面积比等积云参数的计算，进而实现对流性降水量的模拟计算。对计算值再做经验订正，建立对流性降水量的经验预报公式。

Based on parameterization of cumulus and saturation moist static energy conservation principle in moist adiabatic process,by means of Clapeyron equation transformation,the cumulus parameters such as vapour of forming cumulus,the ratio of cumulus area and so on are calculated using partial real time data and numerical weather forecast products.Furtherly,the convective precipitation is calculated by model.With empirical correction to the calculated value,the experimental forecast formula of convective precipitation is established,and the forecast result is quite good.