榆林一次初夏低温冻害的天气学诊断分析

利用2004年兴义多普勒雷达体扫复合仰角资料及自动站雨量资料，综合考虑了地理环境、气候环境2个因素，在贵州省黔西南地区进行降水估计。采用A值平均法得到该区域的dBZ-I，关系。选取2008年1月-8月的部分资料进行检验对比，并对降水误差从地理环境、雷达性能等多个方面进行分析。结果表明，用此方法得出的dBZ-I适用性较好，误差较低。

Estimating the precipitation in Southwestern Guizhou Using Average Method of'A'Value

Using the data of Xingyi Doppler radar in 2004 and automatic weather station rainfall and considering the geographical environment, climate and environment two factors, the precipitation was estimated in southwest of Guizhou. The dBZ - I relationship in this region was obtained by a value of the averaging method. The precipitation error was analyzed in geographical environment and the performance of radar by comparing and verifying the data form January to August 2008. The results show that the dBZ -I value which was derived form this method had a good application and low error.