低纬高原雷电过程中FY-2云顶温度和水汽云图定量特征分析

 利用云南省地闪资料、FY-2E云顶亮温资料和水汽云图资料,定量分析2009、2010年低纬高原雷电过程中雷电与云顶温度、水汽云图特征得出：雷电产生在对流云团移动发展一侧的云顶温度梯度大值区，对于在原地发展、中心位置少动的对流云团，雷电产生在云顶温度低值中心附近，雷电产生区域的水汽温度低于-20℃；分析产生雷电频数较高的单站，雷电产生前水汽温度在-40℃左右，云顶温度在0℃附近，雷电产生期间前2~3h云顶温度和水汽温度为递减趋势.根据定量分析对流云团云顶温度和水汽温度的特征，可以确定雷电产生的位置及强度，进一步提高雷电的预警能力，同时根据雷电活动情况，也可以用来判别是否发生其它强对流天气.

Using FY-2E cloud top temperature and vapor cloud to Analysis the Features about lightning at Low Latitude Plateau

Using FY-2E cloud top temperature and vapor cloud to Analysis the Features about lightning at Low Latitude Plateau，found that lightning was produced in the high value area of the mobile side of the top cloud temperature gradient in convective clouds,lightning was produced in near the low cloud top temperature for convective clouds,the Vapor temperature about the area of linghning produced was Less than -20 degrees.Analysis of high lightning frequency of  station,the Vapor temperature at -40 degrees and cloud top temperature at 0 degrees before the lightning produced,before three hours about Lightning produced the top cloud temperature and water vapor temperature was decreasing trend.According to the quantitative analysis of the characteristics of the convective cloud top temperature and water vapor temperature,can determine the location and intensity of lightning,to further improve the early warning of lightning,lightning activity,but also can be used to determine whether the occurrence of other severe convective weather.