img

官方微信

高级检索

中国沙漠 ›› 2018, Vol. 38 ›› Issue (5): 1086-1092.DOI: 10.7522/j.issn.1000-694X.2017.00102

• 天气与气候 • 上一篇    下一篇

1960-2012年西藏林芝气温和降水变化

张悟颖, 孙维君, 张玉伦   

  1. 山东师范大学 地理与环境学院, 山东 济南 250000
  • 收稿日期:2017-10-10 修回日期:2017-12-07 出版日期:2018-09-20 发布日期:2018-11-03
  • 通讯作者: 孙维君(E-mail:sun1982wj@163.com)
  • 作者简介:张悟颖(1992-),女,山东济宁人,硕士研究生,主要从事高寒气象研究。E-mail:wuying365@outlook.com
  • 基金资助:
    国家自然科学基金项目(41401074)

Wavelet Analysis and Mann-Kendall Test of Mean Air Temperature and Annual Precipitation in Linzhi, Tibet, China from 1960 to 2012

Zhang Wuying, Sun Weijun, Zhang Yulun   

  1. Geography and Environment College, Shandong Normal University, Jinan 250000, China
  • Received:2017-10-10 Revised:2017-12-07 Online:2018-09-20 Published:2018-11-03

摘要: 基于1960-2012年日平均气温和日降水量数据,利用小波分析和Mann-Kendall突变分析方法,分析了西藏林芝气温和降水的变化特征。结果表明:林芝年平均气温增长速率0.028℃·a-1;年平均气温受3~4 a尺度波动的影响,无明显主周期;年平均气温序列有3个突变点,分别是1972-1973年、1975-1976年和1977-1978年。年降水量增长率1.218 mm·a-1;年降水量受4 a、10 a和20 a尺度波动的影响;有两个主周期,分别为2 a、19 a;年降水量序列有4个突变点,分别为1960-1961年、1965-1966年、1977-1978年、1982-1983年。

关键词: 林芝, 小波分析, Mann-Kendall突变检验, 气温, 降水

Abstract: After making trend analysis,morlet wavelet analysis and Mann-Kendall test were used in this study for analyzing air temperature and precipitation annual variabilityfrom 1960 to 2012 in Linzhi Station,Tibet,China. It is found that there existed a increasing trend with 0.028℃·a-1 and characteristic periods of 3-4 years for mean air temperature,but there was no obvious main period for mean air temperature,and there were three abrupt changes for mean air temperature,which were the years of 1972-1973,1975-1976 and 1977-1978.There existed a slowly increasing trend for annual precipitation with 1.1218 mm·a-1,there also existed characteristic periods of 4 years,10 years and 20 years for annual precipitation,and there were two main periods of 2 and 10 years for precipitation,there were four abrupt changes for precipitation,which were the years of 1960-1961,1965-1966,1977-1978 and 1982-1983.

Key words: Linzhi, Wavelet analysis, Mann-Kendall test, air temperature, precipitation

中图分类号: