热带对流性降水的逆温特征  

On the inversion layers of tropical convective precipitation

作　　者：李秀镇[1] 董明伦[1] 李博 王力群[1] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431 [2]青岛市城阳区气象局,山东青岛266100

出　　处：《海洋预报》2016年第1期45-52,共8页Marine Forecasts

基　　金：国家重点基础研究"973"发展计划(613202)

摘　　要：通过对赤道辐合带降水的观测发现,热带对流性降水过程普遍存在逆温现象,为更好的解释这一现象,利用微波辐射计数据,对降水过程的大气层结进行了深入分析。结果表明:(1)强对流降水过程中普遍存在两个"暖心",暖心之间有"冷泡";(2)典型逆温过程发生在对流系统边缘,对流云云顶高度均在10 km以上;(3)逆温现象出现时存在水汽密度和液态水含量大值区。近地面"暖心"下方和第二"暖心"内部水汽密度和液态水含量较小,两个"暖心"之间存在大值中心。第二"暖心"之上水汽密度较小,液态水含量较大。The analyses of the precipitation data obtained from the ITCZ （Intertropical Convergence Zone） revealed that inversion layers occur during the tropical convective precipitation. In order to explain this phenomenon, the atmospheric stratification under the process of rainfall was analyzed in deep based on the MP-3000A microwave radiometer data. The results indicate as follows： （1） Two warm cores exist in the process of strong convective precipitation, and with cold cores between them. （2）Typical inversion process locates at the edge of convection system, and the cloud top height of convection cloud is more than 10 km. （3） Vapor density and liquid water reach a large value zone between the two warm cores under the temperature inversion layer. The value of vapor density and liquid water content is lower below the first warm core and in the second warm core. Above the second warm core vapor density shows lower value while the liquid water is higher.

关 键 词：赤道辐合带 温度廓线 逆温 CISK 

分 类 号：P732.3[天文地球—海洋科学]