前汛期福建地区GMS-5红外云图的亮温度与地面雨强的关系研究  

THE RELATIONSHIP BETWEEN RAINFALL INTENSITY AND CLOUD TOP TEMPERATURE IN GMS-5 IR CLOUD IMAGE IN FUJIAN PROVINCE DURINGTHE FIRST RAINY SEASON

作　　者：林长城[1] 张长安[1] 林忠敏[2] 林祥明[1] 谢怡芳[3] 郑淑贞[1] 

机构地区：[1]福建省气象科学研究所,福建福州350001 [2]福建省气象台,福建福州350001 [3]福建省气象局科教处,福建福州350001

出　　处：《热带气象学报》2003年第1期67-72,共6页Journal of Tropical Meteorology

基　　金：福建省气象局1998年科研项目资助

摘　　要：利用1998年和1999年前汛期GMS-5红外云图探讨亮温度与地面雨强关系。结果表明:地面雨强随着亮温度降低,降水强度逐渐加大,出现强降水的几率增多;在低温区利用多点采样法确定雨量站上空的亮温度值优于单点;前汛期福建地区强降水亮温度阈值选为-46 ℃。The relationship between rainfall intensity and cloud top temperature is discussed by using GMS-5 IR image in 1998～1999 during the first rainy season. The results indicate that the rainfall intensity and frequency of heavy-rain raises when cloud top temperature decreases. Below 72 ℃ the values of cloud top temperature with multiple points method is better than that with single point method. We choose 46 ℃ as the threshold of cloud top temperature in heavy-rain in Fujian province during the first rainy season.

关 键 词：福建地区 红外云图 亮温度 降水强度 前汛期 

分 类 号：P426.62[天文地球—大气科学及气象学]