Journal of Arid Meteorology

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Comparative Analysis on Temperature Changes in City and Suburbs of Xi’an over the Past 40 Years

JIN Lina1WAND Jianpeng2ZHANG Hong2   

  1. 1. Meteorological Bureau of Xi’an,Xi’an 710016,China;
    2. Meteorological Bureau of Shanxi Province,Xi’an 710015,China
  • Online:2013-12-14 Published:2013-12-14

近 40 a 来西安市区与郊县气温变化特征对比

金丽娜1王建鹏2张弘2   

  1. 1. 陕西省西安市气象局,陕西 西安 710016;
    2. 陕西省气象局,陕西 西安 710015
  • 作者简介:金丽娜(1981 - ),女,陕西西安人,硕士,应用气象工程师,主要从事气候变化研究. E - mail: jinpanpan@126. com
  • 基金资助:

    陕西省气象局 2012 年度重点项目( 2012Z -15)的资助

Abstract:

Based on the annual,seasonal and decadal mean temperature data at 7 meteorological stations located in city and suburban
counties of Xi’an from December 1971 to November 2011,the variation characteristics of temperature of city and suburb over the past
40 years were analyzed by using linear regression,anomaly analysis,variable coefficients and the Mann - Kendall test. The results are
as follows:1)The annual average temperature of city and suburbs in Xi’an showed increase trends over the past 40 years,and the rate
of temperature increase in city was 0. 27 ℃ /10 a,which was higher than that of the entire suburban counties. 2)The annual extreme
minimum temperature of city increased significantly over the past the years. The annual extreme maximum temperature of city increased
a little too,but with no obvious trend. 3)The temperature of city and suburban counties increased slowly before the 1990s,then rose
up rapidly after that. 4)The temperature rising in spring and winter brought out the annual mean temperature increase in city and sub-
urban counties of Xi’an,and the urbanization influenced temperature of spring most in four seasons. 5)Colder winters appeared mostly
before the mid -1980s while the warm winters occurred after the late 1990s in city and suburban counties of Xi’an,and the rising rate
of temperature anomaly in city was higher than that in suburban counties in winter. 6)The mutation of temperature in suburbs was earli-
er than that in city.

Key words:  Xi’an, city and suburbs, temperature changes, comparison and analysis

摘要:

利用西安市区及郊县国家级一般气象站 1971 年 12 月至 2011 年 11 月的年、季、年代平均气温作为研究对象,采用一元回归线性拟合、距平分析、变异系数、冷(暖)冬期、突变检验等分析方法,分析总结近 40 a 来市区及郊县的气温变化特征:(1)市区及郊县的逐年平均气温均呈上升趋势,且市区增温速率高于郊县 0. 27 ℃ /10 a;(2)市区逐年极端最高气温基本持平,逐年极端最低气温明显升高;(3)市区及郊县 1990 年代前升温缓慢,1990 年代后升温迅速;(4)市区和郊县的年平均气温升高主要来自春季和冬季升温的贡献;(5)市区及郊县冷冬基本都出现在 1980 年代中期之前,暖冬均出现在1990 年代末以后,且市区冬季气温距平上升率高于郊县;(6)郊县的突变时间早于市区。

关键词: 西安, 市区和郊县, 气温变化, 对比分析

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