安徽农业大学学报2017，Vol.44Issue(2)：302-307,6.DOI:10.13610/j.cnki.1672-352x.20170419.007
长沙市近56年气候变化趋势及突变分析
Climate change and mutation analysis of Changsha in recent 56 years
摘要
Abstract
After the homogeneity test and correction,the instrumental data of temperature,precipitation and humidity from the meteorological stations in Changsha during 1959-2014 were analyzed with the methods of linear regression,Mann-Kendall,Moving-T test and accumulative anomaly so as to detect the changing trends and jumping characteristics.It was found that the temperature in Changsha showed a rising trend during the last 56 years,which was particularly obvious in recent 20 years.The change ranges of different temperature indexes showed some differences,but they changed with the same trend,of which the minimum temperature showed the largest increasing trend.Annual average minimum temperature increased by 0.25 ℃·10a-1 in recent 56 years and 0.92℃· 10a-1 in recent 15 years.There were significant differences among four seasons and of which the most obviously warming trend appeared in spring and winter.The relative humidity decreased by 1.2％· 10a-1 in the past 56 years,while there was no significant change in precipitation.The abrupt change times in four seasons presented a good logical relation with the first mutation occurred in winter of 1991,and then in spring of 1996,and the final abrupt warming respectively occurred in summer of 2002 and autumn of 2000 with almost the same time.关键词
长沙市/气候变化/趋势分析/突变分析Key words
Changsha city/climate change/trend analysis/mutation analysis分类
天文与地球科学引用本文复制引用
罗悦,俞文政..长沙市近56年气候变化趋势及突变分析[J].安徽农业大学学报,2017,44(2):302-307,6.基金项目
国家自然科学基金项目(41375160)和江苏高校哲学社会科学重点研究基地重大项目(2010JDXM027)共同资助. （41375160）
