近53年咸阳最高最低气温变化特征分析

Analysis of Xianyang nearly 53 years maximum and minimum temperature variation characteristics

本文利用咸阳10个气象站1960—2012年53a的气温资料,分析了咸阳区域温度时空变化,结果表明:咸阳气温变化在空间分布上呈非均一性;最高、最低气温在时间变化上为非对称性增长;最高气温在1994年前后存在明显突变点,最低气温在1973年和1997年前后存在两个突变点;年极端最高、最低气温在时间变化上具有对称性;年日较差变化呈下降趋势。

In this paper, using the xianyang 10 weather stations 53 a temperature data --2012, analyzes the temperature change of time and space in the area of xianyang, sults show that the xianyang temperature changes on ty~ The highest and lowest temperatures in time to th perature before and after the obvious mutation in 1994 and 1973 before and after the two point mutation~ The extreme symmetry on time; A downward trend in diu the spatial distribution is not u of 1960 the re- niformi- e asymmetry growth; The highest tem- points, the lowest temperature in 1973 maximum and minimum temperature in rnal range change.