1951—2006年包头气温极端事件变化分析  

Changes in Extreme Temperature Events in Baotou during 1951—2006

作　　者：杨经培[1] 古月[2] 杨晓华[3] 

机构地区：[1]包头市气象局,内蒙古包头014030 [2]成都信息工程学院,四川成都610225 [3]内蒙古生态与农业气象中心,内蒙古呼和浩特010051

出　　处：《内蒙古气象》2009年第2期9-11,共3页Meteorology Journal of Inner Mongolia

基　　金：中科院东亚区域气候环境重点试验室开放课题;国家自然科学基金(40775948)资助

摘　　要：利用包头气象站1951—2006年逐日平均气温资料,建立了高温和低温极端气候事件的阈值,检测了56年来包头逐日气温的极端事件出现频率,分析了极端事件的年、季、月变率。统计了逐日平均气温的各级别出现频数。结果显示:该地区56年里气温显著升高,平均每10年升高0.42℃;在56年时间尺度上平均气温有明显的由冷变暖的突变特征,突变点为1987年;气候变暖后,高温事件明显增多,低温事件明显减少。Based on the daily mean temperature data of Baotou weather station from 1951 to 2006, established the threshold value of the extreme climate events of high temperature and low temperature, detected the frequency of daily extreme temperature events in Baotou in 56 years, analyzed the change rate of extreme events in yearly, quarterly and monthly, counted the present frequency of different daily mean temperature ranks. Result shows： the temperatures in Baotou obviously elevate in 56 years, elevated 0.42℃/10 year. The average temperature had obviously sudden change characteristic from cold to warm in 56 years, the point of discontinuity was at 1987; after climate warming, the high temperature events have evident increased and the low temperature events reduced obviously.

关 键 词：包头 逐日气温 极端气候事件 

分 类 号：P463[天文地球—大气科学及气象学]