摘要
以天山北麓为研究区,通过MOD10A2获得月最大雪盖,在无雪区构建虚拟气象站,提高了样本点数量和空间均匀性。运用普通Kriging和协Kriging法对12月至2月最大雪深进行了空间插值,利用交叉检验法对插值精度进行了评估。
This paper takes north of the Tianshan Mountains as the study area. Monthly maximum snow cover of the study area was obtained by using MOD10A2. To improve the uniformity of spatial distribution of sample points, more spatial sample observations were gotten by creating virtual meteorological stations in snow-free area. Then, spatial interpola- tions for maximum snow depth from December to February were made by Kriging and co- Kriging method, and interpolation accuracy was evaluated by cross-testing method. Judged by average standard error and root mean square prediction error, simple co-kriging considering the effects of altitude is the best snow depth interpolation method. With the virtual meteoro- logical stations, the interpolation result clearly shows the spatial distribution of snow depth in study area.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2012年第4期403-405,共3页
Geomatics and Information Science of Wuhan University
基金
中国沙漠气象科学研究基金资助项目(SQJ2009006)
公益性行业(气象)科研专项基金资助项目(GYHY201106007)
关键词
虚拟气象站
空间插值
海拔
virtual meteorological station
spatial interpolation
altitude
