新乡市城区近64年气温和降水量特征分析  

Analysis of the characteristics of air temperature and precipitation in near 64 years in Xinxiang

作　　者：张钰[1] 孙涛 方国华[1] 闻昕[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]南水北调东线江苏水源有限责任公司,江苏南京210029

出　　处：《水资源与水工程学报》2017年第1期94-99,共6页Journal of Water Resources and Water Engineering

基　　金：水利部公益性行业科研专项经费项目(201401003)

摘　　要：为全面分析和掌握河南省新乡市气温、降水变化特征,基于新乡气象台站1951-2014年月平均气温和月降水量资料,利用滑动平均、小波分解、滑动T检验、Mann-Kendall检验和Morlet小波变换,对年平均气温和年降水量进行趋势分析、突变检验和周期分析。结果表明:新乡市近64年年平均气温有明显上升趋势(显著性水平α=0.01),在1997年左右发生突变,年平均气温存在55年左右的第一主周期;新乡市近64年年降水量呈不显著减少趋势,未发生突变,年降水量存在54年左右的第一主周期;年平均气温与年降水量的第一主周期几乎吻合。Based on the monthly average air temperature and precipitation data of Xinxiang meteorological station in Henan province during 1951 -2014, the trend analysis, mutation test and periodical analysis of the annual air temperature and precipitation were conducted by using the moving average, wavelet decomposition, moving t - test, Mann - Kendall test and Morlet wavelet transformation in order that the overall variation characteristics of air temperature and precipitation in Xinxiang could be analyzed and known. The results showed that the temperature had an obvious upward trend at the 0.01 significance level in re- cent 64 years ; the mutation happened around 1997 ; the first main period was 55 years for annual mean air temperature, and the precipitation had a insignificant decrease trend but had no mutate during recent 64 years ; the first main period of annual precipitation was 54 years. The annual average temperature and precipitation was almost identical in the first main period

关 键 词：气温 降水量 变化趋势 突变年份 周期 新乡市 

分 类 号：TV125[水利工程—水文学及水资源]