摘要
本文用一维积雨云双参数模式模拟了福建雨季一块发展强度中等、云底较暖的积雨云自然降水过程,发现该云有两段降水:前段为暖云降水,后段有冰相过程参与。对这块云进行的一系列人工催化数值试验表明,一定方式的冷云催化或暖云催化能使后段降水增加,其效果同催化方式有关,最多可达总降水量的24%。文中对人工催化这类积雨云的增雨机制进行了讨论,得到了一些有益的启示。
A Cumulonimbus cloud with moderate intensity and a warm cloud base has been simulated by using a dual-parameter cumulonimbus cloud model in the rainy season in Fujian.It is shownthat the cloud precipitation process has two phases,the first one is a warm-rain process and thesecond with ice phase process.A series of numerical experiments of cloud seeding show that ice-seeding or large droplet seeding could enhance the precipitation in the second phase.The effect ofprecipitation enhancement is concerned with the seeding pattern,the maximum can reach 24% ofthe total precipitation.In this paper,the mechanism of precipitation enhancement is also dis-cussed.
出处
《应用气象学报》
CSCD
北大核心
1990年第2期142-152,共11页
Journal of Applied Meteorological Science
基金
国家气象局气象科学基金
