摘要
用 GMS TBB遥感资料和湿 -比有效能量方法分析了 1 998年巴盟地区 9次降雹过程 ,认为 :1云顶温度及其水平梯度是识别冰雹云的重要参量 ,云顶温度低于- 2 5℃才可能出现有灾冰雹 ,预报区云顶温度水平梯度大于 5 0℃ / 5 0 km才可能出现重雹灾 ;2冰雹云生成前低层是高能舌 ,而中高层低能中心和负能量平流中心位于其北或西北方 ;3有雹无灾冰雹云生成前低层没有高能舌 ,在降雹区西北方 45 0 km以内也没有中高层低能中心。
With GMS TBB data and the moist available energy method, an analysis of the nine hail fallout processes in Bameng area on 1998 is made. It suggests: (1) the temperature of cloud top and its horizontal gradient were important parameters for identification of hail cloud; (2) as hail cloud genesis there was a tongue of high energy at the low level and a center of low energy at the mid and upper level while a center of negative energy advection was located over its north and northwest.
出处
《气象》
CSCD
北大核心
2001年第7期35-40,共6页
Meteorological Monthly
基金
"96 - 0 2 0 - 0 1- 0 7攻关专题的子专题"资助
