利用CINRAD WSR-98D探测夏季对流云特征

MAKING USE OF CINRAD WSR-98D FOR PROBING INTO SUMMER CONVECTIVE CLOUD CHARACTERISTICS

利用南昌CINRAD WSR-98D多普勒雷达,对2002-2003年夏季36个对流云天气过程连续观测基础上,选取有代表性观测个例及不同层次、不同时刻回波产品资料,分析夏季对流云结构特征。结果表明,对流云回波基本反射率面积值为11．18×109 m2;组合反射率面积值为19．85×109 m2;对流云回波顶高平均10．71 km,最大顶高15．11 km,回波顶高面积值为7．71×109m2。分析结果可为江西范围内的人工增雨作业提供科学依据。

Making use of CINRAD WSR-98D, a Doppler weather radar in Nanchang, and a data base of 36 convective cloud weather processes continuously observed for the summer of 2002 and 2003, representative cases and radar return echoes for different levels and times were selected to analyze convective cloud structural characteristics in Jiangxi. As shown in the result of convective cloud return echoes, the area for basic reflectivity is 11.18×10^9m^2, the area for combined reflectivity is 19.85×10^9m^2, the mean top height is 10.71 km, the maximum top height is 15.11 km, and the area for top height is 7.71×10^9m^2. The analysis result can provide scientific basis for rainfall enhancement operations in Jiangxi.