近50年天津地区局地气候变化特征分析  

Characteristics of Local Climate Change in the Last 50 Years over Tianjin Area

作　　者：高润祥[1] 司鹏[1] 宋明[1] 郭军[1] 汤莉莉[2] 

机构地区：[1]天津市气象局,天津300074 [2]南京信息工程大学环境科学与工程学院,南京210044

出　　处：《气候与环境研究》2011年第2期159-168,共10页Climatic and Environmental Research

基　　金：科技部公益性行业(气象)科研专项GYHY200706036;国家重点基础研究发展计划资助项目2006CB403707;中国气象局气象软科学项目GQR2009034

摘　　要：利用天津地区5个台站的降水、云量和大雾等常规地面观测资料,分析了近50年天津地区的气候变化特征。结果表明,天津地区的城市化对局地气候变化的影响日趋明显,人类活动产生的气溶胶浓度的增加已经对云、降水和雾等的气候特征造成了较为显著的影响。表现为:自上个世纪80年代以来,城市化进程比较明显的地区,低云量呈增加的趋势,毛毛雨日数的减少呈减缓的趋势,冬季大雾日数有明显的增加趋势等。而天津地区近50年降水趋势的变化特征,也同时包含了区域大尺度背景条件的影响。Based on the precipitation,cloud cover,and fog observational dataset from five meteorological stations in Tianjin region,the facts of climate change in Tianjin during the last 50 years are analyzed.The results indicate that the urbanization effect on the local climate change in Tianjin is increasing significantly,and the changes of cloud cover,precipitation,and fog have been influenced by aerosol pollution by human activities.It shows that the low cloud cover is increasing,the decrease in the drizzle days is slowing down,and the foggy days in winter have increased dramatically since the 1980s,especially in the areas of obvious urbanization.Whereas the change of the precipitation over the past 50 years in Tianjin region also includes the influence of the large-scale background condition changes.

关 键 词：天津地区 降水 云量 大雾 气溶胶 气候变化 

分 类 号：P463[天文地球—大气科学及气象学]