南京信息工程大学学报2013，Vol.5Issue(2)：113-119,7.
基于NCEP资料的我国大气可降水量的计算及其时空分布
Estimation of atmospheric precipitable water in China with NCEP data and its spatio-temporal distribution
摘要
Abstract
As an important meteorological parameter,atmospheric precipitable water exerts great impact on many climatic processes such as the formation of precipitation,the absorption and emission of radiation,even the formation and change of the whole climate.There are several methods available for calculation of atmospheric precipitable water.This paper uses the NCEP reanalysis data to obtain multi-year mean atmospheric precipitable water,and analyses the spatial distribution and seasonal variation of the atmospheric precipitable water in China,then compares the obtained atmospheric precipitable water data with that form sounding data in the same period.The spatial distribution analysis shows that the atmospheric precipitable water is higher in low latitudes than in high latitudes,higher in plain than in plateau,higher in coastal area than in interior area.The atmospheric precipitable water shows an obvious seasonal variation,which is low in winter,and high in summer.The calculation result of atmospheric precipitable water based on NCEP reanalysis data is close to that from sounding data,and the average relative error is less than 19.5％.Thus the proposed method is applicable on estimation of atmospheric precipitable water in China.关键词
大气可降水量/NCEP再分析资料/探空资料/空间分布/季节变化Key words
atmospheric precipitable water/ NCEP reanalysis data / sounding data / spatial distribution / seasonal variation分类
天文与地球科学引用本文复制引用
刘丹,邱新法,史岚,施国萍..基于NCEP资料的我国大气可降水量的计算及其时空分布[J].南京信息工程大学学报,2013,5(2):113-119,7.基金项目
国家自然科学基金(41175077) （41175077）
江苏省普通高校研究生科研创新计划项目(CX10B_300Z) （CX10B_300Z）
转基因生物新品种培育科技重大专项(2009ZX08011-019B) （2009ZX08011-019B）
