| 利用MODIS数据研究天山北麓Kriging雪深插值 |
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| 引用本文： | 刘艳,阮惠华,张璞,李杨.利用MODIS数据研究天山北麓Kriging雪深插值[J].武汉大学学报(信息科学版),2012,37(4):403-405. |
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| 作者姓名： | 刘艳 阮惠华 张璞 李杨 |
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| 作者单位： | 1. 中国气象局乌鲁木齐沙漠气象研究所,乌鲁木齐市建国路46号,830002
2. 广东省气象信息中心,广州市越秀区福今路6号,510080 |
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| 基金项目： | 中国沙漠气象科学研究基金资助项目，公益性行业(气象)科研专项基金资助项目 |
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| 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。
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| 关 键 词： | 虚拟气象站 空间插值 海拔 |
Kriging Interpolation of Snow Depthat the North of Tianshan Mountains Assisted by MODIS Data |
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| LIU Yan,RUAN Huihua,ZHANG Pu,LI Yang.Kriging Interpolation of Snow Depthat the North of Tianshan Mountains Assisted by MODIS Data[J].Geomatics and Information Science of Wuhan University,2012,37(4):403-405. |
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| Authors: | LIU Yan RUAN Huihua ZHANG Pu LI Yang |
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| Institution: | 1(1 Institute of Desert Meteorological,China Meteorological Administration,46 Jianguo Road,Urumqi 830002,China)(2 Meteorological Information Center of Guangdong,6 Fujin Road,Guangzhou 510080,China) |
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| Abstract: | 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 interpolations 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 meteorological stations,the interpolation result clearly shows the spatial distribution of snow depth in study area. |
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| Keywords: | virtual meteorological station spatial interpolation altitude |
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