###
DOI:
本文二维码信息
四川盆地边缘山地强降水与海拔的关系
周秋雪1, 康岚1, 蒋兴文2, 刘莹1
(1.四川省气象台;2.中国气象局成都高原气象研究所 成都)
Relationship between Heavy Rainfall and Altitude in Mountainous Areas of Sichuan Basin
ZHOU Qiuxue1, KANG LAN1, JIANG Xingwen2, LIU Ying1
(1.Sichuan Provincial Meteorological Office;2.Institute of Plateau Meteorology,China Meteorological Administration)
摘要
相似文献
本文已被:浏览 46次   下载 38
投稿时间:2017-08-30    修订日期:2019-04-03
中文摘要: 利用四川盆地1666个站点2011年-2015年4-10月的逐小时降水资料及高精度格点海拔高度资料,对降水特征与海拔高度的变化关系进行详细分析,研究发现:1、汛期总降水量、总雨日、小雨日、中雨日随海拔高度升高而增加,但降水量与雨日随海拔的增长方式并不相同,降水量显著增长区主要集中在200-1200m之间,当海拔超过1200m时降水量迅速减少。同样的,大雨日及暴雨日在海拔超过1200m后也迅速减少。2、盆地西北部、西南部沿山一带的暴雨日主要由强小时雨强贡献,而盆地东北部的暴雨日主要受持续性降水影响。3、四川盆地复杂地形对降水的日变化有较为显著的影响,小时雨量及短时强降水频次峰值出现时间均随着海拔高度升高而提前,而短时强降水首次出现时间则随海拔高度升高而推迟。
中文关键词: 短时强降水  暴雨  海拔  汛期
Abstract:Based on the hourly precipitation data of 1666 stations during 2011~2015 and High-precision terrain grid data at Sichuan Basin, the relationship between the characteristics of precipitation and altitude are investigated by using statistical diagnostic methods. And get the following main conclusions.1.The total precipitation increases with the elevation of altitude.Total rain day,light and moderate rain day also show the same trend.However,the total precipitation is not the same as that of the rainy day. The precipitation growth area is mainly concentrated between 200-1200m, when the altitude exceeds 1200m, the precipitation decreases rapidly. Similarly, heavy rainy days and rainstorm days are also rapidly decreasing after an altitude of more than 1200m.2.The heavy rain which concentrated the Northwest and Southwest of the basin mainly contributed by the strong hour rainfall. But the heavy rain is mainly caused by the persistent precipitation in the Southwest of the basin.3.The complex topography of Sichuan Basin has a significant effect on the diurnal variation of precipitation.The appearance of peak frequency in one day is ahead of time with the elevation of altitude.And the first occurrence time of strong hour rainfall(hereafter SHR) postpones with the elevation of altitude.
文章编号:201708300400     中图分类号:P467    文献标志码:
基金项目:四川省气象局科学技术研究开发课题(川气课题2015-青年-03);省重点实验室(2017-重点-01);中国科学院山地灾害与地表过程重点实验室开放基金(2016山区降雨的空间不均匀性对泥石流预报阈值的影响);高原与盆地暴雨旱涝灾害四川省重点实验室(2017-青年-05);强对流预报创新团队;雷达资料在短时强降水预报中的应用研究(创新团队);
引用文本:
周秋雪,康岚,蒋兴文,刘莹,0.[en_title][J].Meteor Mon,():-.
ZHOU Qiuxue,KANG LAN,JIANG Xingwen,LIU Ying,0.Relationship between Heavy Rainfall and Altitude in Mountainous Areas of Sichuan Basin[J].Meteor Mon,():-.