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

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。

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

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 daily 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.