江西农业学报2017，Vol.29Issue(5)：86-93,100,9.DOI:10.19386/j.cnki.jxnyxb.2017.05.18
气候变化下河套地区1960~2013年极端气温变化特征研究
Study on Characteristics of Extreme Air Temperature Changes in Hetao Area from 1960 to 2013 under Climatic Change
摘要
Abstract
Based on the daily air temperature data of 13 meteorological stations in Hetao area from 1960 to 2013, using the methods of linear fitting, accumulative anomaly, Mann-Kendall test, principal component analysis, Morlet complex wavelet, and R/S analysis, we calculated and studied 10 kinds of extreme air temperature indices released by WMO.The results were obtained as follows: in Hetao area in recent 54 years, the average air temperature, extreme maximum air temperature, extreme minimum air temperature, and heat indices (summer day, heat night, warm day, and warm night) all showed an increasing trend, while the cold indices (ice day, frost day, cold day, and cold night) all decreased significantly.The changes in extreme air temperature indices in Hetao area had obvious spatial distribution characteristics and sudden change phenomenon, and the sudden changes occurred mainly in the 1980s and 1990s.The rising of both heat indices and winter air temperature was the main reason for the increase in annual average air temperature in Hetao area.The extreme high temperature events happened for many times in the later 1990s and the beginning of the 21st century, and occurred mostly in July (especially in the middle of July).AO and NAO indexes had significant influences on the extreme air temperature indices in winter and spring (especially in winter) in Hetao area.关键词
极端气温/河套地区/变化特征/气候变化Key words
Extreme air temperature/Hetao area/Variation characteristic/Climatic change分类
农业科技引用本文复制引用
张心萍,陈建宇,陈宏飞..气候变化下河套地区1960~2013年极端气温变化特征研究[J].江西农业学报,2017,29(5):86-93,100,9.基金项目
国家自然科学基金国际合作重大项目(41210002) （41210002）
教育部人文社会科学研究项目(16YJCZH005) （16YJCZH005）
陕西师范大学院士创新项目(999521). （999521）
