本溪市57年气温和降水特征分析

Analysis on Temperature and Precipitation Characteristics in Benxi City of Liaoning in Last 57 Years

以本溪市区台站数据为基础,同时选取气温和降水2个主要的气象要素指标,采用线性倾向估计和累计距平法,对本溪市区1955～2011年的气候变化进行了分析。结果表明,近57年来本溪市区气温以增温为主,冬季增温趋势最为显著;以1988年为界,可将本溪地区分为1955～1988年相对冷期和1989～2011年相对暖期2个阶段;本溪地区夏季和冬季降水量均呈弱减少趋势,而秋季有明显的下降趋势。总体来说,近57年来降水量呈下降趋势。

Based on data of Benxi station,selcting temperature and precipitation as main indicators,the climate change during 1955-2011 was analyzed by adopting linear trend estimation and accumulative anomaly method.The results indicated that in recent 57 years,temperature in Benxi City is mainly increased,and is most obvious in winter;with 1988 as the sector,two stages were divided,namely relative cold period during 1955-1988 and relative warm period during 1989-2011.The precipitation showed lightly decreasing trend in summer and winter and obvious decreasing trend in autumn.