内蒙古干旱-半干旱区中小河流和山洪沟的流域面雨量阈值修订  

Revision of Watershed Area Rainfall Threshold for Small and Medium-sized Rivers and Mountain Torrent Ditch in Arid Semi-arid Region of Inner Mongolia

作　　者：刘澜波[1] 李岩[1] 云静波[2] 魏丹[1] 赵志勇[1] 李林惠 张世军 Liu Lanbo;Li Yan;Yun Jingbo;Wei Dan;Zhao Zhiyong;Li Linhui;Zhang Shijun(Baotou Meteorological Bureau,Baotou 014030,Inner Mongolia Autonomous Region,China;Inner Mongolia Autonomous Region Meteorological Bureau,Hohhot 010051,Inner Mongolia Autonomous Region,China)

机构地区：[1]包头市气象局,内蒙古自治区包头014030 [2]内蒙古自治区气象局,内蒙古自治区呼和浩特010051

出　　处：《农业技术与装备》2022年第10期119-121,共3页Agricultural Technology & Equipment

摘　　要：2018年在副热带高压的影响下,内蒙古西中部出现了3次大范围极端暴雨过程(7月19日—20日、7月23日—24日和9月1日—2日)。文章通过对3次不同程度的气象风险事件进行分析,并对当时流域面雨量进行反算,根据灾情数据,对致灾区中小河流和山洪沟的气象风险阈值进行修订,将包头市境内的山洪沟临界面雨量阈值调大了1.8~6.1 mm,巴彦淖尔市境内的山洪沟临界面雨量调低0.95~7.2 mm,为今后此类极端降水事件的防灾减灾提供更为客观实用的预警指标。In 2018,under the influence of the subtropical high,three large-scale extreme rainstorm processes occurred in the west central of Inner Mongolia,the rainstorm processes from July 19 to 20,July 23 to 24 and September 1 to 2.Based on the analysis of three meteorological risk events of different degrees,and the back calculation of the area rainfall of the basin at that time,the meteorological risk threshold of small and medium-sized rivers and Shanhonggou in the disaster area is revised according to the disaster data.The rainfall threshold of Shanhonggou in Baotou city is increased by 1.8~6.1 mm,and the rainfall of Shanhonggou in Bayannaoer City is decreased by 0.95~7.2 mm,So as to provide more objective and practical early warning indicators for disaster prevention and mitigation of such extreme precipitation events in the future.

关 键 词：暴雨 面雨量 阈值 修订 

分 类 号：P468.024[天文地球—大气科学及气象学]