天津滨海区50年局地气候变化特征

利用1951～2000年天津滨海新区的气象资料,分析了50年来气温、降水、日照的变化特征,结果显示天津滨海新区年、冬季、夏季气温均呈上升趋势,20世纪50～80年代冬季增温强于夏季,90年代则夏季升温最为明显;降水总体趋势下降,90年代降到50年来的最小值;年平均日照时数也呈总体下降趋势,90年代下降最为显著。表明天津滨海新区气候正在趋向变暖,特别是近10年来气温急剧升高,降水量锐减、日照时数明显减少,使得高温、干旱、少日照成为天津滨海新区气候的突出问题。

Analysis of Local Climate Changes in Tianjin Coastal Area in Last 50 Years

The characteristics of temperature rainfall and sunshine duration in the last 50 years were analyzed based on the meteorological data of the New Binhai district. The results show that the annual mean temperature,winter mean temperature and summer mean temperature have been rising generally. From the 1950s to 1980s,winters witnessed stronger warming than summers and in the 1990s temperature increase became more obvious. The rainfall showed a decreasing trend generally,and reached the minimum of the 1990s in the last 50 years. The annual mean sunshine duration had a decreasing trend too and the 1990s witnessed the most obvious change. According to the analysis above,the weather in the New Binhai district is becoming warmer,especially in the last 10 years. The sharp rise of temperature,sharp decrease of rainfall and less sunshine duration are the main problems in the New Binhai district.