摘要
利用辽宁省28个均一化气象站点1961-2009年逐日平均气温、最高气温、最低气温及降水量资料,采用趋势分析和Mann-Kendall检验方法,分析了辽宁省近49年的气温和降水变化特征及突变特征。结果表明:辽宁省年平均气温、年平均最高气温和年平均最低气温均呈升高趋势,升温速率分别为0.32℃/10a、0.26℃/10a和0.46℃/10a,年平均最低气温的升温最为显著,增温速率是年平均最高气温增温速率的1倍多。四个季节的升温速率冬季最大,春季次之,秋季略低于春季,夏季最不明显。年平均气温1989年发生了突变,年平均最高气温1992年发生了突变,年平均最低气温1985年发生了突变。年降水量整体上有减少的趋势,但变化并不显著。四季降水量呈冬春季增加、夏秋季减少的趋势。年降水量发生了三次突变,1967年由偏多转为偏少,1983年降水量开始大幅度增加,1996再次由多变少。
Based on the annual mean temperature,annual mean maximum temperature,annual mean minimum temperature and precipitation data from 28 homogeneous stations from 1961 to 2009 in Liaoning province,using the trend analysis and Mann-Kendall analysis method,the characteristics of the variation and the abrupt change of the temperature and precipitation in Liaoning province were analyzed.The results showed that the annual mean,maximum and minimum temperature all showed obviously rising trends,the linear trend rates were 0.32℃/10a,0.26℃/10a and 0.46℃/10a respectively,the annual minimum temperature had a more significant rising trend and its linear trend rate was more than one times of the maximum temperature.Winter had the highest rising trends,spring was the second,the autumn was lower than the spring,and summer was not clear.The times of the abrupt change of the annual mean,maximum and minimum temperature were in 1989,1992 and 1985.The precipitation had a decreasing trend on the whole,but the change was not significant.The precipitation in winter and spring had a rising trend,the summer and autumn had a decreasing trend.The annual precipitations had three abrupt change points,it changed from more to less in 1967,then began to increase by a large margin in 1983 and changed from more to less again in 1996.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2013年第10期87-93,共7页
Journal of Arid Land Resources and Environment
基金
林业公益性行业专项中国森林对气候变化的响应与林业适应对策研究(200804001)
中国气象局2010年气候变化专项(062700s010c01)
2012年度公益性行业(气象)科研专项(201206024)资助
