常煜,樊斌,张小东.内蒙古夏季不同气候区短时强降水检验及制定.气象科学,2018,(2):229-236 CHANG Yu,FAN Bin,ZHANG Xiaodong.Validation and definition of short-duration intense precipitation in summer in different zones in Inner Mongolia.Journal of the Meteorological Sciences,2018,(2):229-236
内蒙古夏季不同气候区短时强降水检验及制定
Validation and definition of short-duration intense precipitation in summer in different zones in Inner Mongolia
投稿时间:2016-11-02  修订日期:2017-02-05
DOI:10.3969/2017jms.0029
中文关键词:  不同气候区  短时强降水  累积概率
英文关键词:Different climatic zones  Short-duration intense precipitation  Cumulative probability
基金项目:中国气象局预报员专项(CMAYBY2016-014)
作者单位E-mail
常煜 内蒙古呼伦贝尔市气象局, 内蒙古 呼伦贝尔, 021008 changyu0258@163.com 
樊斌 内蒙古自治区气象局, 呼和浩特, 010051  
张小东 内蒙古自治区气象局, 呼和浩特, 010051  
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中文摘要:
      利用1991—2015年夏季(6—8月)内蒙古地区111个国家气象站小时降水量资料,对内蒙古不同气候区(极干旱、干旱、半干旱、半湿润和湿润)短时强降水(1 h降水量≥20 mm)进行检验分析,采用累积概率方法定义内蒙古夏季不同气候区短时强降水。检验结果表明:内蒙古地区年平均降水量和小时降水量极值自西部极干旱区向东部半湿润、湿润区递增,高值区位于大兴安岭东部,次高值区位于阴山山脉以南。内蒙古极干旱区小时降水量极值低于20 mm,半湿润区和湿润区小时降水量极值高于50 mm,个别站点甚至达到100 mm以上。但在半湿润区和湿润区东部小时降水量超过20 mm年平均发生仅为1次,其余地区均<1次。在内蒙古极干旱区、干旱区、半干旱区、半湿润区和湿润区小时降水量分别达到6.1、9.8、12.5、15.2和14.3 mm·h-1属于极端降水事件,小时降水量≥20 mm不宜作为内蒙古短时强降水定义。综合上述研究,结合内蒙古地区地形、地貌等因素,将内蒙古极干旱区和干旱区短时强降水定义为5 mm·h-1,半干旱区、半湿润区和湿润区短时强降水定义为10 mm·h-1
英文摘要:
      By using the hourly precipitation data of 111 national stations in summer (June to August)during 1991-2015 in Inner Mongolia, the short-duration intense precipitation (1 hour precipitation over 20 mm)was verified in different zones (extreme arid regions, arid regions, sub-arid regions, sub-humid regions, humid regions) of Inner Mongolia. Short-Duration Intense Precipitation (SDIP) was defined by cumulative probability method in summer in different zones of Inner Mongolia. Results reveal that:annual average precipitation and Extreme Value of Hourly Precipitation (EVHP) increased from extreme arid regions of west to sub-humid and humid regions of east in Inner Mongolia. High value area was located in the east of Greater Khingan Range mountain rage and the secondary high value area was in the south of Yinshan mountain. EVHP was less than 20 mm in extreme arid regions in Inner Mongolia, but EVHP was greater than 50 mm in sub-humid and humid regions of Inner Mongolia, so far as to exceed 100 mm. Annual average frequency of Hourly Precipitation (HP)greater than 20 mm was only one times in the east of sub-humid and humid regions, the rest areas were less than one times. It belonged to extreme rainfall that HP reached 6.1 mm·h-1,9.8 mm·h-1,12.5 mm·h-1,15.2 mm·h-1 and 14.3 mm·h-1 respectively corresponding to extreme arid regions, arid regions, sub-arid regions, sub-humid regions and humid regions of Inner Mongolia. HP greater than 20 mm was unsuitably definition of SDIP in Inner Mongolia. Based on the above research, to combine terrain and landforms of Inner Mongolia, SDIP in extreme arid regions and arid regions defined 5 mm, SDIP defined 10 mm in other zones.
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