摘要
普查益阳市各气象站1959-2009年的高温天气过程,根据高温范围、持续时间、强度和高温期间干旱日数等设置高温异常指数,从气象角度综合评估了一次高温过程的灾害影响程度。通过分析排序,揭示了益阳"5年一遇"至"50年一遇"的年际高温灾害性天气事件的主要分布特征,并对益阳高温的空间分布及其年代际变化特征作了初步分析。结果表明,20世纪六、七十年代益阳市强高温热害较多,其灾害程度为"10年一遇"至"50年一遇",1966年7月中旬至8月中旬出现的高温酷暑天气为"50年一遇,"1979-1991年、1996-2008年仅有小于"5年一遇"的高温热害,2009年的高温热害为"5年一遇"。
Through general survey high temperature weather process of Yiyang weather stations from 1959 to 2009,according to high temperature scope,duration,intensity and high temperature period arid date numbers and so on,the paper establishes high temperature unusual indices,from a meteorological angle overall assesses pyroprocess disaster influence.Through analysis sorting,the paper promulgates Yiyang ＂once in every 5 years＂ to ＂once in every 50 years＂ the interannual high temperature disastrous weather event＇s main distributed characteristic.And the paper has made the preliminary analysis to the Yiyang high temperature＇s spatial distribution and the interdecadal change characteristic.The result indicates that the strong high temperature heat damage is more from 1960s to 1970s in Yiyang,the disaster degree is ＂once in every 10 years＂ to ＂once in every 50 years＂;mid-July to mid-August of 1966 appeared the high temperature intense summer heat weather which was ＂once in every 50 years＂;1979-1991 and 1996-2008 had less than ＂once in every 5 years＂ high temperature heat damage;2009 high temperature heat damage was ＂once in every 5 years＂.
出处
《气象与环境科学》
2010年第4期48-52,共5页
Meteorological and Environmental Sciences
关键词
高温热害
异常指数
评估
益阳市
high temperature heat damage
anomalous index
evaluation
Yiyang city
