安徽农业科学2017，Vol.45Issue(9)：186-190,5.
1960-2012年陕西汉中地区极端气温指数变化特征
Change of Extreme Temperature Index in Hanzhong Region in Shaanxi Province during 1960-2012
摘要
Abstract
Using the daily temperature data of Hanzhong region from 1960 to 2012,the change trend,mutation year and periodicity of nine extreme temperature indices in Hanzhong region were studied by the method of linear trend,Mann-Kendall mutation test and Morlet complex wavelet analysis.The results showed that the extreme minimum temperature,extreme maximum temperature,warm night,warm day,summer day,hot night were on the rise in Hanzhong region during 1960-2012,while cold night,cold day and frost day were on the decline.Among that warm night,summer day,hot night had increased significantly,in rate of 7.94,3.54 and 3.06 d/10 a respectively.Cold night and frost day had an obvious decline,in rate of 5.83 and 5.14 d/10 a respectively.Except hot night,there were stages change characteristic for each extreme temperature index,also with mutation characteristic.The mutation of extreme temperature mainly happened in the 60′s,the middle of 80′s,the late of 90′s and 2000-2010.There was generally a main cycle around 30 years for extreme temperature events in Hanzhong region,there was a cycle around 17 years for cold day and extreme maximum temperature,there was a cycle of smaller scale than 17 years for cold day and cold night,warm day and warm night.Conclude from comprehensive analysis,this region is now on period that temperature mutation happened easily.The extreme temperature in Hanzhong region during 1960-2012 has increased obviously,it is easily to cause agricultural meteorological disasters,people should strengthen the prevention of meteorological disasters.关键词
极端气温/气候变暖/气温突变/周期规律/汉中地区Key words
Extreme temperature/Climate warming/Temperature mutation/Periodic law/Hanzhong region分类
农业科技引用本文复制引用
陈成全,袁野,叶凤珍,赵景波..1960-2012年陕西汉中地区极端气温指数变化特征[J].安徽农业科学,2017,45(9):186-190,5.基金项目
国家自然科学重点基金项目(41210002). （41210002）
