违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 SANDRA法对北京小时强降水扰动环流场的分型研究-Anomaly-Based Classification Study of Synoptic Patterns Associated with Hourly Heavy Rainfall over Beijing by SANDRA
doi:  10.3878/j.issn.1006-9585.2018.18046
SANDRA法对北京小时强降水扰动环流场的分型研究

Anomaly-Based Classification Study of Synoptic Patterns Associated with Hourly Heavy Rainfall over Beijing by SANDRA
摘要点击 52  全文点击 40  投稿时间:2018-03-21  修订日期:2018-05-13
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基金:  国家重点基础研究发展计划
中文关键词:  分型  小时强降水  扰动  SANDRA
英文关键词:  classification  hourly heavy rainfall  anomaly  SANDRA
           
作者中文名作者英文名单位
黎慧琦Li Huiqi中国科学院大气物理研究所
崔晓鹏Cui Xiaopeng中国科学院大气物理研究所
李琴Li Qin
吴凡Wu Fan中国科学院大气物理研究所
引用:黎慧琦,崔晓鹏,李琴,吴凡..SANDRA法对北京小时强降水扰动环流场的分型研究[J].气候与环境研究
Citation:Li Huiqi,Cui Xiaopeng,Li Qin,Wu Fan..Anomaly-Based Classification Study of Synoptic Patterns Associated with Hourly Heavy Rainfall over Beijing by SANDRA[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      利用cost733class软件中的SANDRA客观分型方法对北京地区2007-2014年暖季5-9月的小时强降水日的500 hPa扰动位势高度场进行分型研究。结果显示,所划分的4类环流形势分别在蒙古、东北-华北地区、河套地区和俄罗斯远东地区存在扰动低压区。根据4类的质心,将2007-2014年暖季所有日划归4类,计算每类小时强降水日占各自类型总天数的百分比得出蒙古扰动低压类的小时强降水日出现概率最大。统计小时强降水日的探空廓线得出,925 hPa和850 hPa的比湿中位数分别为13.01和10.64 g kg-1,这2个层级上最常出现的风向是180o-225o。
Abstract:
      By using SANDRA, the hourly heavy rainfall days over Beijing during the warm seasons (May-September) of 2007-2014 are classified into four types based on 500 hPa anomalous geopotential height fields. There is an anomalous low in Mongolia, Northeast and North China, Hetao region, and Russian Far East, respectively, in the four types. All the days during the warm seasons of 2007-2014 are then assigned to one of the four types according to the centroids of the four types. Result shows that the type in which an anomalous low is located in Mongolia has the largest probability of hourly heavy rainfall. The statistical analysis of soundings on hourly heavy rainfall days reveals that the median specific humidity values of 925 hPa and 850 hPa are 13.01 and 10.64 g kg-1 respectively, and that wind direction in the range 180 o-225o is dominant at these two levels.
主办单位:中国科学院大气物理研究所 单位地址:北京市9804信箱
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