文献类型：期刊文献

中文题名：基于PRISM的山地环境大气湿度的空间插值

英文题名：Spatial interpolation of humidity over mountain area based on PRISM

作者：蒋育昊[1] 刘鹏举[1] 夏智武[1] 贾道祥[1] 闫明[1]

第一作者：蒋育昊

机构：[1]中国林业科学研究院资源信息研究所

年份：2016

卷号：45

期号：6

起止页码：692-699

中文期刊名：福建农林大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金："863"计划资助项目(2012AA102001-2)

语种：中文

中文关键词：大气湿度;空间插值;PRISM;加权线性最小二乘回归

外文关键词：atmospheric humidity; spatial interpolation; parameter-elevation regression on independent slopes model; weighted linear least squares regression

分类号：S716.2;P456.7

摘要：基于PRISM方法设计开发了山地大气湿度空间插值模型,选取北京西部山区作为试验区域,利用气象科学数据共享平台上36个台站资料和1∶25万DEM数据生成年、月、日3个时间尺度下大气相对湿度的栅格信息.采取站点交叉验证的方式对插值结果进行精度评估,并与反距离加权、克里金等其他空间插值方法的插值精度进行比较.结果表明:基于PRISM模型的大气湿度空间插值模型适合模拟北方山地的大气湿度分布场,年平均相对湿度和月平均相对湿度的插值精度比较高;与考虑空间距离或者空间距离结合海拔的其他插值方法相比,该模型插值精度有了较大提高.
To investigate spatial distribution characteristics of humidity across mountainous area in western Beijing, spatial interpolation model based on parameter-elevation regression on independent slopes model （ PRISM） principle was applied to hourly humidity data from 36 stations of Meteorological Science Data Sharing Platform and 1 ∶ 250000 DEM data across western mountainous area in Beijing. Then grid information on atmospheric relative humidity under time scales of yearly, monthly and daily was generated. Moreo-ver, accuracy of the model was evaluated by cross validation among the sites and comparison with other models like inverse-distance-weighting, Kriging and polynomial. The result showed that this spatial interpolation model based on PRISM was suitable for simula-ting atmospheric humidity distribution over mountainous area in northern China. Interpolation accuracies for monthly and annual average relative humidity were greatly improved. And its interpolation accuracy was higher than other interpolation methods which only considered space distance or space distance together with altitude.