首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Mapping near-surface air temperature,pressure, relative humidity and wind speed over Mainland China with high spatiotemporal resolution
Authors:Tao Li  Xiaogu Zheng  Yongjiu Dai  Chi Yang  Zhuoqi Chen  Shupeng Zhang  Guocan Wu  Zhonglei Wang  Chengcheng Huang  Yan Shen  Rongwei Liao
Institution:1. College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
2. National Meteorological Information Center, China Meteorological Administration, Beijing, 100081, China
Abstract:As part of a joint effort to construct an atmospheric forcing dataset for mainland China with high spatiotemporal resolution, a new approach is proposed to construct gridded near-surface temperature, relative humidity, wind speed and surface pressure with a resolution of 1 km×1 km. The approach comprises two steps: (1) fit a partial thin-plate smoothing spline with orography and reanalysis data as explanatory variables to ground-based observations for estimating a trend surface; (2) apply a simple kriging procedure to the residual for trend surface correction. The proposed approach is applied to observations collected at approximately 700 stations over mainland China. The generated forcing fields are compared with the corresponding components of the National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis dataset and the Princeton meteorological forcing dataset. The comparison shows that, both within the station network and within the resolutions of the two gridded datasets, the interpolation errors of the proposed approach are markedly smaller than the two gridded datasets.
Keywords:atmospheric forcing data  land surface model  thin-plate smoothing spline  kriging  reanalysis data
本文献已被 CNKI 维普 SpringerLink 等数据库收录!
点击此处可从《大气科学进展》浏览原始摘要信息
点击此处可从《大气科学进展》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号