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梧州地区降水和气温的气候特征

         

摘要

The records of 5 stations'monthly average precipitation and air temperature during 1954 - 2011 in Wuzhou were employed. Trend a-nalysis and Wavelet analysis were adopted to study changes of precipitations and air temperature, cyclicity of variations and other climate features in Wuzhou nearly 58a. The results showed that: annual precipitation and winter precipitation grew gradually; air temperature increased wavily, and both changes of annual air temperature and seasonal air temperature were different; variations of precipitations and air temperature were periodic ; some summer and autumn precipitations were beyond the normal range much; the phases of precipitations and air temperature in summer and autumn was opposite.%应用梧州地区5个站点1954~2011年逐月降水和平均气温资料,采用趋势分析、小波分析法,分析了近58年梧州地区降水和气温的变化趋势、变化周期性等气候特征.结果表明,近58年梧州地区年降水量、冬季降水量总体呈增加趋势,年降水量存在25年左右、10年左右的震荡周期,季降水量存在一个10年左右的振荡周期最为明显;年平均气温存在一个9~11年的振荡周期;近58年梧州全年、夏季、秋季、冬季平均气温总的趋势均表现为升高趋势,但升高的幅度不同,梧州全年平均气温上升幅度为0.152℃/10a,气候变暖表现明显;梧州58年来出现夏季严重多雨事件8次,严重少雨事件7次;出现秋季严重多雨事件3次,严重少雨事件2次.

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