期刊文献+

西北干旱区地气温差季节和年际变化特征的分析 预览 被引量:29

Analyses on Characteristic of Seasonal and Interannual Variation of Difference between Surface and Air Temperature (Ts-Ta) in Arid Region in Northwest China
在线阅读 下载PDF
分享 导出
摘要 利用西北干旱区49个气象站1961—2000年0cm地温和气温月平均资料,采用逐级归并法、小波分析、经验正交函数(EOF)、旋转经验正交函数(REOF)方法,分析了西北干旱区地气温差的时空演变特征、气候突变和周期振荡。结果表明:西北干旱区地气温差可分为12月~2月、3月、4~6月、7~10月和11月5类,11月和12月~2月呈下降趋势,3月、4~6月和7~10月呈上升趋势,12月~2月下降幅度较大,4~6月上升幅度最大;地气温差受大尺度气候异常的影响,第一载荷向量反映了全区一致的性质;北疆区和内蒙区有异常变化存在;3月和11月的突变点为1977年,12月~2月、4~6月和7~10月的突变点为1981年;周期振荡主要以3~6年为主。 The temporal-spatial evolution features, abrupt climate change and oscillatory period of the difference between land surface and air temperature (simply as the (Ts-Ta)) are analyzed by using the monthly surface temperature and air temperature of 49 weather stations (1961-2000) in the arid region in Northwest China(NWC), with hierarchical cluster analysis, wavelet analysis, EOF, REOF methods. The results show that (Ts-Ta) in the arid region in NWC can be divided into December~February, March, April~June, July~October and November; (Ts-Ta) reveals the tendency of descent in November and December~February. (Ts-Ta) reveals the tendency of ascent in March, April~June and July~October months; the tendency of descent is the maximum in December~February and the tendency of ascent is the biggest in April~June; (Ts-Ta) is influenced by the large-scale weather systems, the first loading vector reflects the main spatially-anomalous structure; the north of the Xinjiang and the Inner Mongolia area have the exceptionally change existence; the abrupt year in March and November months is in 1977; the abrupt year in December~February, April~June and July~October is in 1981; the periodic oscillation is mainly 346 years.
作者 符睿 韦志刚 文军 李振朝 卢广献 FU Rui, WEI Zhi-gang , WEN Jun , LI Zhen-chao , LU Guang-xian( 1. Laboratory for Climate Environment and Disasters of Western China, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science, Lanzhou 730000, China 2. Yunnan Institute of Meteorology, Kunming 650034, China 3. Monsoon and Meteorological Disaster Study Laboratory, Kunming 650034, China)
出处 《高原气象》 CSCD 北大核心 2008年第4期 844-851,共8页 Plateau Meteorology
基金 基金项目:中国科学院知识创新工程重要方向项目(KZCX2-YW-220) 国家自然科学基金项目(40730952) 财政部/科技部公益类行业专项(GYHY200706005)共同资助
关键词 西北干旱区 地气温差 季节和年际变化 The arid region in Northwest China (Ts-Ta) Seasonal and interannual variations
作者简介 符睿(1980-),女,云南宣威人,硕士,主要从事中尺度数值模式的检验和改进研究.E-mail:furuik@sina.com
  • 相关文献

参考文献28

二级参考文献276

共引文献2883

同被引文献481

引证文献29

二级引证文献201

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈