摘要
以本溪地区4个测站数据为基础,同时选取气温和降水2个主要气象要素指标,采用线性倾向估计、Mann-Kendall和累积距平法,对1958—2009年本溪地区气候变化趋势进行探讨。结果表明:近52 a来,本溪地区年和春、秋季及冬季平均气温均呈明显的增温趋势。夏季虽有增温趋势,但不显著。本溪地区春季和冬季降水量均呈弱增加趋势,而年和夏季及秋季降水量均呈下降趋势。总体来说,近52 a来,本溪地区降水量呈下降趋势。本溪地区年和各季平均气温均先后在20世纪80年代末发生了突变。20世纪80年代以来,本溪地区相对进入了明显的暖期。年和各季降水量均没有发生突变。
Based on air temperature and precipitation data from 4 weather stations,the climatic characteristics were analyzed by the linear trend estimation method,the Mann-Kendall test method and the accumulative anomaly method in Benxi area from 1958 to 2009.The results show that the mean air temperatures in spring,autumn and winter,together with the mean annual air temperature are the obvious increasing trend in the recent 52 years in Benxi region.Summer air temperature is also the increasing trend,while not significant.Precipitation in spring and winter increases weakly,while decreases in summer and autumn.Annual precipitation is also the decreasing trend.An abrupt change of the mean annual air temperature occurs in the late 1980s,so are the seasonal air temperatures.At the same time,it becomes the obvious warming period in Benxi region after 1980s.There is not an obvious abrupt change for precipitation.
出处
《气象与环境学报》
2010年第5期57-60,共4页
Journal of Meteorology and Environment
