摘要
应用ＧＭＳ可见光和红外通道数值化资料，针对梅雨锋云系特点，选用云顶红外计数值（ＩＲＣ）、可见光计数值（ＶＩＳＣ）、红外计数值梯度等因子，用逐步回归法导得高层高积云、多层云和积雨云的降水与上述因子的关系，并将估计结果与理论、实测降水比较，表明该方法估计效果较好，采用云分类降水估计结果比无云分类的要好。
In the context of Meiyu front cloud features the GMS visible and infrared channelnumerical data are employed to obtain the relationships between stich factors as the clotid topinfrared count(IRC).visible light cotint(VISC)and infrared count gradient.on one side. andthe precipitation of the upper-level altocumulus,multilayer clud and cumulonimus on theother,with the aid of stepwise regression. Comparison made of the estimated results to thetheoretic and observed rainfall shows that this method is quite satisfactory.The estimation isbetter in the presence of cloud classification than that of no-cloud classification.
出处
《南京气象学院学报》
CSCD
1994年第1期79-85,共7页
Journal of Nanjing Institute of Meteorology
基金
"七.五"中国气象局短平快课题资助
关键词
红外计数值
梅雨锋
降水
云图
infrared count,visible light count,estimated precipitation,Meiyu front
