摘要
Based on the hour-by-hour precipitation data from national and regional-level surface meteorological automatic stations in Linyi from 2011 to 2020,the statistics of short-term heavy precipitation show the following characteristics:(1)Short-term heavy precipitation in Linyi shows obvious interannual and intermonthly variations,and its frequency is on the rise after 2015,with the extreme short-term heavy precipitation showing high frequency and high intensity.(2)During the June-September flood season,July is the month with the highest frequency of short-term heavy precipitation,followed by August,with the ratio of short-term heavy precipitation to heavy rainfall reaching 82.2% in August.(3)There is a clear pattern of daily changes in short-term heavy precipitation,with the high incidence concentrated in the late afternoon to evening and early morning.(4)The high-frequency areas of short-term heavy precipitation in Linyi include Hedong District,south-central Yinan County,southern Mengyin County,northwestern Jounan County,southeastern Yishui County,northern Tancheng County,and southeastern Linshu County in Linyi City.
基金
Shandong Meteorological Bureau Forecaster Special Project(SDYB2020-09,SDTQ2022-07)
China Desert Meteorological Science Research Fund(SQJ2018007)
Shandong Meteorological Bureau Guiding Project(2023SDYD30).
