| 中国西部主要台站积雪深度的空间插值研究 |
| |
| 引用本文： | 唐国栋,柯长青.中国西部主要台站积雪深度的空间插值研究[J].气候与环境研究,2007,12(4):566-572. |
| |
| 作者姓名： | 唐国栋 柯长青 |
| |
| 作者单位： | 南京大学地理信息科学系,南京,210093 |
| |
| 摘 要： | 应用空间插值方法,对中国西部地区(27.17～48.05°N,79.05～103.57°E)110个气象台站的观测数据进行空间内插,研究积雪分布特征。结果表明,普通Kriging法和Cokriging法都能够反映出研究区积雪深度分布的空间结构特征,与实际情况比较吻合。但相比之下,Cokriging法的精度更高,局部特征的反映更佳。分析发现,影响插值结果精度的主要因素是研究区内气象台站稀少,且空间分布很不均匀。通过合理的采样设计,选择合适的插值方法,并考虑地形、气候等影响积雪分布的因素将有利于改善空间插值精度。
|
| 关 键 词： | 积雪深度 普通Kriging法 Cokriging法 中国西部地区 |
| 文章编号： | 1006-9585（2007）04-0566-07 |
| 收稿时间： | 2006-05-26 |
| 修稿时间： | 2007-05-08 |
Study on Spatial Interpolation of Snow Depth from Observatories in Western China |
| |
| TANG Guo-Dong and KE Chang-Qing.Study on Spatial Interpolation of Snow Depth from Observatories in Western China[J].Climatic and Environmental Research,2007,12(4):566-572. |
| |
| Authors: | TANG Guo-Dong and KE Chang-Qing |
| |
| Abstract: | The spatial interpolation methods are utilized for study on spatial distribution of snow depth from 110 observatories in the west of China.Both the results of ordinary Kriging and Cokriging represent the spatial structure of snow depth distribution,according to the reality.However,the accuracy of Cokriging is higher than Kriging and the result of Cokrigng reflects local characteristics better.The main reasons which affect the precision are the small number of observatories and their asymmetric spatial distribution.The precision of spatial interpolation can be improved through reasonable design of sampling,suitably selecting interpolation methods,and considering the influencing factors of snow distribution,such as terrain and climate. |
| |
| Keywords: | snow depth ordinary Kriging Cokriging western China |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《气候与环境研究》浏览原始摘要信息 |
| 点击此处可从《气候与环境研究》下载免费的PDF全文 |
|
