Two Types of Diurnal Variations in Heavy Rainfall during July over Korea

作     者：Chang-Kyun PARK Minhee CHANG Chang-Hoi HO Kyung-Ja HA Jinwon KIM Byung-Ju SOHN Chang-Kyun PARK;Minhee CHANG;Chang-Hoi HO;Kyung-Ja HA;Jinwon KIM;Byung-Ju SOHN

作者机构：School of Earth and Environmental SciencesSeoul National UniversitySeoul 08826Korea School of Earth and Environmental SystemsPusan National UniversityBusan 46241Korea Center for Climate PhysicsInstitute for Basic ScienceBusan 46241Korea National Institute of Meteorological SciencesKorean Meteorological AdministrationJeju 63568Korea 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：2021年第38卷第12期

页      面：2201-2211页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：This work was supported by the Korea Meteorological Administration Research and Development Program(Chang-Hoi HO and Minhee CHANG:KMI2020-00610) the National Research Foundation of Korea(NRF)funded by the Korea government(MSIT)(Kyung-Ja HA:2020R1A2C2006860,Chang-Kyun PARK:2021R1C1C2004711) Development and Assessment of AR6 Climate Change Scenarios(Jinwon KIM:KMA2018-00321) 

主　　题：heavy rainfall diurnal cycle of rainfall 2020 summer summer rainy season Korea 

摘      要：This study examined the characteristics of the diurnal variations of heavy rainfall(≥110 mm in 12 hours)in Korea and the related atmospheric circulation for July from 1980−*** the analysis period,two dominant pattens of diurnal variation of the heavy rainfall emerged:all-day heavy rainfall(AD)and morning only heavy rainfall(MO)*** the AD-type,the heavy rainfall is caused by abundant moisture content in conjunction with active convection in the morning(0000−1200,LST;LST=UTC+9)and the afternoon hours(1200−2400 LST).These systems are related to the enhanced moisture inflow and upward motion induced by the strengthening of the western North Pacific subtropical high and upper-tropospheric *** the MO-type,heavy rainfall occurs mostly in the morning hours;the associated atmospheric patterns are similar to the *** find that the atmospheric pattern related to severe heavy rainfalls in 2020 corresponds to a typical AD-type and resembles the 1991 heavy-rainfall system in its overall synoptic/mesoscale *** present results imply that extremely heavy rainfall episodes in Korea during the 2020 summer may occur again in the future associated with the recurring atmospheric phenomenon related to the heavy rainfall.