宁夏工程技术2023，Vol.22Issue(4)：295-301,7.
宁夏降水集中度和降水集中期的时空变化特征分析
Spatiotemporal Variation Analysis of Precipitation Concentration Degree and Precipitation Concentrated Periods in Ningxia
摘要
Abstract
Based on daily precipitation data from 12 meteorological stations in Ningxia from 1971 to 2020,this study employed Kriging spatial interpolation,Empirical Orthogonal Function(EOF)decomposition,and linear trend analysis to examine the spatiotemporal characteristics of Precipitation Concentration Degree(PCD)and Precipitation Concentration Period(PCP).The findings indicate that spatially,PCD values decrease progressively from north to south,and there is a slight trend for PCP to commence earlier in the south,although the changes are minimal.The overall trends of PCD and PCP across the Ningxia region are consistent;however,discrepancies exist between the northern and central-southern parts,with more pronounced changes in the north.Temporally,over the past five decades,PCD has shown no significant trend,whereas PCP has experienced a slight delay.关键词
宁夏/降水集中度/降水集中期/时空变化Key words
Ningxia province/precipitation concentration degree/precipitation concentration period/spatial and temporal change分类
大气科学引用本文复制引用
李承璐,李超超,彭文发,徐磊..宁夏降水集中度和降水集中期的时空变化特征分析[J].宁夏工程技术,2023,22(4):295-301,7.基金项目
宁夏高等学校一流学科建设项目(NXYLXK2021A03) （NXYLXK2021A03）
宁夏回族自治区重点研发计划重点项目(2020BEG03045,2022ZDYF1132) （2020BEG03045,2022ZDYF1132）
宁夏青年科技人才托举工程项目(TJGC2019041) （TJGC2019041）
