摘要
用滤波方法把贵州省中西部地区的地形分解成中β尺度地形场和较大尺度地形场，从中了解到中β尺度地形的特殊波形及由此而形成的较大纬向梯度与冰雹和暴雨的频繁发生有关；较大尺度地形的纬向和经向梯度与冰雹和暴雨的频繁发生也有一定的关系。从冰雹和暴雨的个例分析得知。
The topography height fields of Guizhou mid-west areas were separated into meso-β scale and larger scale topography fields by using low pass filter method It is found that the special wave pattern and larger longitudinal gradient of meso-β scale topography are related with the frequent occurrence of hail and heavy rain The latitudinal and longitudinal gradients of larger scale topography are also related with the occurrence of hail and heavy rain From case analyses of hail and heavy rain,the larger up-motion velocity of meso-β scale topography is close related with the occurrence of hail and the strength variation of precipitation in especially heavy rain area
出处
《高原气象》
CSCD
北大核心
1997年第2期197-203,共7页
Plateau Meteorology
