新疆伽师县1961-2017年气候变化特征

Characteristics of climate change in Jiashi County of Xinjiang from 1961 to 2017

基于伽师县气象站1961-2017年逐日气温、降水、日照、霜冻地面气象观测资料,采用气候倾向率和气候趋势系数分析方法分析了伽师县的气候变化特征。结果表明:近57 a伽师县年平均、最高、最低气温,>0℃、>5℃、>10℃的积温及降水量显著增加,霜冻日数显著减少,初霜日推迟、终霜日提前,日照时数虽有波动变化,但变化不明显。四季而言,季气温、降水量、日照时数变化有差异,其中冬季最低气温,夏季降水量及冬季日照时数变化幅度更明显。

Based on the daily temperature,precipitation,sunshine and frost data of Jiashi meteorological station from 1961 to 2017,the characteristics of climate change in Jiashi county were analyzed by using univariate linear trend analysis method.The results show that:in recent 57 years,the annual average,maximum and minimum temperature,accumulated temperature and precipitation of>0℃,5℃and 10℃in Jiashi county increased significantly,the number of frost days decreased significantly,the first frost day delayed and the last frost day advanced,and the change of sunshine hours was not obvious.For the four seasons,the seasonal temperature,precipitation and sunshine hours are different,and the minimum temperature in winter,precipitation in summer and sunshine hours in winter are more obvious.