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中国沙漠 ›› 1997, Vol. 17 ›› Issue (3): 230-236.

• 研究论文 • 上一篇    下一篇

西北四省区不同季节降水、气温异常的时空分布与干旱的关系

靳立亚1, 徐旭然2, 秦宁生3, 吴永森3   

  1. 1. 兰州大学大气科学系, 兰州 730000;
    2. 山东省烟台市气象局, 烟台 264001;
    3. 青海省气象科学研究所, 西宁 810000
  • 收稿日期:1996-07-02 修回日期:1996-11-01 出版日期:1997-09-20 发布日期:1997-09-20
  • 作者简介:靳立亚,男,1964年出生,理学硕士,讲师。主要从事气象灾害与全球气候变化的教学与研究工作。

THE SPATIAL AND TEMPORAL DISTRIBUTION OF ANOMALOUS TEMPERATURE AND PRECIPITATION IN DIFFERENT SEASONS AS WELL AS THEIR RELATIONSHIP WITH DROUGHT IN NORTHWEST CHINA

Jin Liya1, Xu Xuran2, Qin Ningsheng3, Wu Yongsen3   

  1. 1. Atmospheric Science Department of Lanzhou University, Lanzhou 730000;
    2. Yantai Meteorological Bureau, Shandong Province, Yantai 264001;
    3. Qinghai Institute of Meteorological Science, Xining 810001
  • Received:1996-07-02 Revised:1996-11-01 Online:1997-09-20 Published:1997-09-20

摘要: 利用西北四省区73个台站1960~1990年逐月降水量和平均气温的距平资料,采用综合的经验正交函数(EOF)分析方法,对西北四省区春(3~5月份)、夏(6~8月份)、秋(9~11月份)3个季节降水、气温异常的时空分布特征进行了诊断研究,得到了几种降水和气温异常的典型配置及其反映这些典型场的年际演变规律的时间系数,并在此基础上进一步分析了降水、气温异常的时变特征以及与西北四省区出现较严重干旱年份之间的关系。结果表明,西北四省区不同区域发生较严重干旱的年份与某些时间系数出现极值的年份存在很好的对应关系。

关键词: 西北四省区, 降水, 气温, 综合EOF, 干旱

Abstract: In this paper,based on the monthly average precipitation and air temperature dating dated from 1960 to 1990 at 73 observational stations in Northwest China,we have made a diagnostic study on the features of the spatial and temporal distribution of anomalous temperature and precipitation in Spring,Summer and Autumn in Northwest China by using the EOF method.Some kinds of typical patterns of precipitation correlating with anomalous temperature as well as their interannual changing regularity have been obtained.The results show that there is a good correspondence between the severe drought year in Northwest China and the extremum(maximum or minimum) year of time coefficients.

Key words: Northwest China, Precipitation, Temperature, Comprehensive EOF Method, Drought

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