地理学报 ›› 2011, Vol. 66 ›› Issue (9): 1191-1199.doi: 10.11821/xb201109004

• 气候变化 • 上一篇    下一篇

中国西北地区近50年夏季0 ℃层高度及气温时空变化特征

黄小燕, 张明军, 王圣杰, 李亚举, 潘淑坤   

  1. 西北师范大学地理与环境科学学院,兰州 730070
  • 收稿日期:2011-04-15 修回日期:2011-07-05 出版日期:2011-09-20 发布日期:2011-11-04
  • 通讯作者: 张明军(1975-), 男, 教授, 博导, 中国地理学会会员(S110007775M), 主要从事气候变化与冰川研究。E-mail: mjzhang2004@163.com E-mail:mjzhang2004@163.com
  • 作者简介:黄小燕(1984-), 女, 湖北宜城人, 硕士研究生, 主要从事全球环境变化方面的研究工作。E-mail: xyhuang0529@sina.cn
  • 基金资助:

    教育部新世纪优秀人才支持计划项目(NCET-10-0019); 国家自然科学基金项目(41161012); 陇原青年创新人才扶持计划; 西北师范大学知识与科技创新工程创新团队项目(NWNU-KJCXGC-03-66)

Variation of 0 ℃ Isotherm Height and Ground Temperature in Summer in Northwest China during the Past 50 Years

HUANG Xiaoyan, ZHANG Mingjun, WANG Shengjie, LI Yaju, PAN Shukun   

  1. Geography and Environment College, Northwest Normal University, Lanzhou 730070, China
  • Received:2011-04-15 Revised:2011-07-05 Online:2011-09-20 Published:2011-11-04
  • Supported by:

    The Program for New Century Excellent Talents in Universities by the Education Ministry of China, No. NCET-10-0019; National Natural Science Foundation of China, No.41161012; The Foundation for Young Innovative Scientists in Gansu Province; The Knowledge and Technological Innovation Project of Northwest Normal University, No.NWNU-KJCXGC-03-66

摘要: 采用1960-2009 年112 个地面观测站和21 个探空站气象资料,分析中国西北地区近50 年夏季0 ℃层高度和平均气温变化趋势。结果表明:西北地区近50 年来夏季0 ℃层高度平均值为4675.7 m,在1987 年以前表现为下降趋势,平均每年下降5.6 m,而1987 年以后表现为显著的上升趋势,平均每年上升2.6 m;夏季平均气温与0 ℃层高度变化趋势大致相同,西北气候显著转型前后表现出相反的变化趋势,且1987 年以来夏季平均气温增加急剧,平均每10 年上升0.53 ℃。1960 年以来夏季0 ℃层高度在北京时间08 时该区大部分地区表现出显著的上升趋势,而在20时大部分地区表现出相反的变化趋势,1987 年以来在08 时和20 时大部分地区夏季0 ℃层高度都为上升趋势;50 年来大部分地区夏季平均气温都表现为上升趋势,乌鲁木齐和秦巴山地则表现为显著的下降趋势。西北不同气候区的夏季0 ℃层高度和平均气温变化也有一定的差异。西北地区夏季0 ℃层高度和平均气温具有较好相关性,东部季风区相关性最差,青藏高寒区最好。

关键词: 西北地区, 0 ℃层高度, 平均气温, 气候变化

Abstract: Based on the data of 112 meteorological stations and 21 aerological stations in Northwest China from 1960 to 2009, the variation of 0 ℃ isotherm height and mean temperature in summer was analyzed. The result indicated that the mean height of 0 ℃ isotherm in summer was 4675.7 m during 1960-2009, with an annual decrease of 5.6 m before 1987 and an annual increase of 2.6 m after 1987. The ground temperature showed a similar annual trend at the 0 ℃ isotherm height, which was converse around the climatic mutation in Northwest China, with a considerable increase rate of 0.53 ℃ per decade after 1987. During 1960-2009, in most parts of Northwest China, the 0 ℃ isotherm height at Beijing Time 8:00 in summer increased significantly, and the height at Beijing Time 20:00 decreased. However, during 1987-2009, the 0 ℃ isotherm height in most parts of Northwest China increased at Beijing Time 8:00 and 20:00. A marked increasing trend of mean temperature in summer was observed in most parts of Northwest China, but the trend was opposite in Urumqi and Qinling-Daba Mountains. For the different climatic zones, the main trend and correlation between 0 ℃ isotherm height and mean temperature in summer varied spatially. The correlation was significant in the Cold Region on the Qinghai-Tibet Plateau, less significant in the Arid Region in Northwest China, and not significant in Monsoon Region in eastern China.

Key words: Northwest China, 0 ℃ isotherm height, mean temperature, climatic change