Journal of Arid Meteorology

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Analysis on the Characteristic of Temperature Change in the Last 50 Years in Xi’ning of Qinghai Province

MEI Duo1,2GAO Yuan2MA Yan1,2HAN Huifu1,3   

  1. 1. Key Laboratory of Disaster Prevention and Mitigation of Qinghai Province,Xi’ning 810001,China;
    2. Dulan Meteorological Station of Qinghai Province,Dulan 810016,China;
    3. Guinan Meteorological Station of Qinghai Province,Guinan 813100,China
  • Received:2011-11-29 Revised:2012-05-18 Online:2013-03-30 Published:2013-03-01

近50 a 青海西宁气温变化特征

梅朵1,2高原2马艳2韩辉福3   

  1. 1. 青海省重点防灾减灾实验室,青海西宁810001; 2. 青海省都兰县气象局,青海都兰810016; 3. 青海省贵南县气象局,青海贵南813100
  • 作者简介: 梅朵( 1981 - ) ,女( 蒙古族) ,青海省海南州人,工程师,主要从事大气探测业务和应用气象研究工作. E - mail: meiduocwztf@ sina.com

Abstract:

Based on the data of annual average temperature,average maximum and minimum temperature,extreme maximum and minimum temperature during 1961 - 2010,the climatic characteristics of temperature change were analyzed in this paper. The results show that in recent 50 years,seasonal and annual average temperature presented increasing trend in Xi’ning,and was most obviously in winter. The stability of linear trend,tendency and abrupt change phenomena for maximum and minimum temperature variation presented obvious non - symmetry features. The linear trend of seasonal average maximum temperature was stable,the linear warming trend of the average minimum temperature in winter and summer was stable,the tendency rate of seasonal and annual maximum temperature was more greater than that of minimum temperature,and the linear tendency in cold season was significantly more than that in warm season.The increasing trend also presented in extreme maximum temperature,but extreme minimum temperature showed a weak downward trend. The abrupt change of extreme minimum and annual average minimum temperature occurred in 1963,but for extreme maximumand average maximum temperatures it occurred in the 1990s.

Key words: temperature change, maximum temperature, minimum temperature, asymmetry change

摘要:

利用西宁市1961 ~ 2010 年年平均温度、平均最高最低温度、极端最高最低温度,研究西宁气温变化的气候特征。结果表明,近50 a 来西宁市4 季和全年的平均气温都呈上升趋势,近些年来略有回落,其中冬季增温最明显。西宁市最高最低气温变化在线性增温趋势的稳定性、倾向率和突变现象均有明显的非对称性特征: 各季节的平均最高气温的线性趋势均稳定,平均最低气温在冬季和夏季线性增温趋势稳定,最高气温的倾向率在各个季节或年平均上比最低气温的倾向率大得多,冷季的线性倾向率明显大于暖季; 极端最高气温线性趋势呈上升态势,极端最低则为弱的下降趋势; 极端最低和年平均最低气温突变发生较早,在1963 年附近,极端最高和年平均最高气温突变时间大体一致发生在1990 年代。

关键词: 温变化, 最高气温, 最低气温, 非对称变化, 突变

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