现代农业科技Issue(12)：138-143,149,7.DOI:10.3969/j.issn.1007-5739.2024.12.035
2013-2022年横江中下游流域汛期面雨量特征分析
Analysis on Characteristics of Area Rainfall in Flood Season in Middle and Lower Reaches of Hengjiang River Basin from 2013 to 2022
摘要
Abstract
Based on the daily precipitation data(20:00 to 20:00 of the next day)of the automatic weather station in Zhaotong section of the middle and lower reaches of Hengjiang River Basin from April to October in flood season during 2013-2022,the daily area rainfall of the four sub-basins was calculated by using the Tyson polygon method,and its spatio-temporal distribution characteristics were analyzed.The results showed that the spatio-temporal variation characteristics of precipitation in flood season was obvious in the middle and lower reaches of Hengjiang River in recent 10 years.The average annual area rainfall was 843.3 mm.The rainfall mainly occurred from May to September.The average frequency of heavy rainfall in each sub-basin was 2.4-5.2 times,the Guanhe Basin was the most prone to heavy rainfall,and the Sayu River Basin was the least.Except for Sayu River Basin,all sub-basins had heavy rainfall of daily area rainfall≥60 mm,among which the Baishui River Basin had the largest heavy rainfall.The frequency of regional heavy precipitation was 3.4 times/a,and the Baishui River Basin was easy to have strong precipitation at the same time as the Luoze River Basin or the Guanhe River Basin,so the possibility of regional heavy precipitation could not be ignored.关键词
横江流域/泰森多边形/面雨量/面雨量强降水/2013-2022年Key words
Hengjiang River Basin/Tyson polygon/area rainfall/areal rainfall heavy precipitation/2013-2022分类
天文与地球科学引用本文复制引用
赵军学,何娟,彭斌,晏翠玲..2013-2022年横江中下游流域汛期面雨量特征分析[J].现代农业科技,2024,(12):138-143,149,7.基金项目
云南省气象局基层台站气象科技创新与能力提升计划项目"横江流域暴雨分布特征及灾害影响研究"(STIAP202208). （STIAP202208）
