辽宁乡镇天气预报中风和相对湿度及云量的空间插值方法  

Spatial interpolation methods of wind,relative humidity and cloud cover in villages and towns weather forecast in Liaoning province

作　　者：陆忠艳[1] 蔡福[2] 刘文明[1] 袁子鹏[1] 陈艳秋[1] 陈明强 

机构地区：[1]辽宁省气象台,辽宁沈阳110016 [2]中国气象局沈阳大气环境研究所,辽宁沈阳110016 [3]庄河市气象局,辽宁庄河116400

出　　处：《气象与环境学报》2009年第4期54-57,共4页Journal of Meteorology and Environment

基　　金：辽宁省气象局"农村防灾减灾"项目资助

摘　　要：针对开展乡镇天气预报时对高精度逐日气象要素输入值的需要,以辽宁地区为例,在乡镇预报前期研究成果的基础上,选用距离权重反比法作为基本方法,综合考虑海拔高度,建立风向、风速、相对湿度和云量历史资料库。结果表明:风速、相对湿度可由经度和纬度求算权重,然后采用海拔高度订正插值误差最小;风向和云量可由经度、纬度和海拔高度求算空间距离,确定权重插值误差最小。Based on the previous results of villages and towns weather forecast in Liaoning province and the altitude data, the historical database of wind direction, wind speed, relative humidity and cloud cover were established with the inverse distance weighted method in order to satisfy the needs of higher precision input values of dally meteorological elements in villages and towns weather forecast. The results indicate that the weights of wind speed and relative humidity are calculated by longitude and latitude. The interpolations are revised by the altitudes, and the error rates are lower. The weights of wind direction and cloud cover are determined by spatial distance calculating from longitude, latitude and altitude, and the error rates are lower.

关 键 词：风向 风速 相对湿度 云量 空间插值 乡镇天气预报 辽宁 

分 类 号：P456.8[天文地球—大气科学及气象学]