强对流降水云团的云图特征分析  

STRONG CONVECTIVE CLOUD CHARACTERISTICS DERIVED FROM SATELLITE CLOUD PICTUER

作　　者：卢乃锰[1] 吴蓉璋[1] 

机构地区：[1]国家卫星气象中心

出　　处：《应用气象学报》1997年第3期269-275,共7页Journal of Applied Meteorological Science

基　　金："八五"国家科技攻关项目

摘　　要：对１９９２～１９９４年夏季四川、湖北、河南３省３３３个地面雨量站２万多个雨量观测数据以及与之相应的４千余幅ＧＭＳ－４红外数字云图资料的分析结果表明，云顶温度、温度梯度、云团的膨胀、穿透性云顶的存在、云体相对于云团中心的偏离量与云的降水强度有着明显的对应关系．在不同的地区，这种对应关系有所不同．In order to get the strong convective cloud characteristics exhibiting in satellite images, about 20000 hourly gauge data of 333 surface rainfall stations and corresponding 4000 IR digital cloud images of GMS 4 during the period of 1992～1994 in Henan, Hubei and Sichuan provinces were analyzed. The results show that the cloud top temperature, the temperature gradients, the expansion of a convective cloud cluster, the occurrence of overshooting tops and the normalized distance from a cloud covered area to the cluster center have correspondent relations to the cloud precipitation. These relations could vary with different geographical regions.

关 键 词：强对流云图 云图 特征量 降水量 

分 类 号：P455[天文地球—大气科学及气象学] P426.6