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

Advances in Atmospheric Sciences 2021年第12期38卷 2201-2211页

作者： chang-Kyun PARK minhee chang chang-Hoi HO Kyung-Ja HA Jinwon KIM Byung-Ju SOHN School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea School of Earth and Environmental Systems Pusan National UniversityBusan 46241Korea Center for Climate Physics Institute for Basic ScienceBusan 46241Korea National Institute of Meteorological Sciences Korean Meteorological AdministrationJeju 63568Korea

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.

关键词： heavy rainfall diurnal cycle of rainfall 2020 summer summer rainy season Korea

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Application of the rotating-convection paradigm for tropical cyclones to interpreting medicanes:An example

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Tropical Cyclone Research and Review 2022年第3期11卷 131-145页

作者： Gerard Kilroy Hongyan Zhu minhee chang Roger K.Smith Meteorological Institute Ludwig-Maximilians UniversityMunichGermany Research Science and InnovationBureau of MeteorologyMelbourneAustralia School of Earth and Environmental Sciences Seoul National UniversitySeoulSouth Korea

The rotating-convection paradigm for tropical cyclone behaviour is shown to provide an attractive and consistent framework for interpreting the dynamics of formation and intensification of at least some *** ideas are illustrated by a case study of the medicane that formed over the eastern Mediterranean in mid-December *** case study is based on analyses of data from the European Centre for Medium Range Weather Forecasts(ECMWF),imagery from the European geostationary meteorological satellite,Meteosat Second Generation,and output from a convection permitting numerical simulation of the event using the United Kingdom(UK)Met Office regional model with the RAL2 physics *** of the currently widely accepted interpretation of medicanes in terms of the so-called Wind-Induced Surface Heat Exchange(WISHE)intensification mechanism are discussed.

关键词： Tropical cyclone Hurricane Typhoon Deep convection Medicane

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Tropical cyclogenesis:Controlling factors and physical mechanisms

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Tropical Cyclone Research and Review 2023年第3期12卷 165-181页

作者： V.P.M.Rajasree Xi Cao Hamish Ramsay Kelly M.Nú~nez Ocasio Gerard Kilroy George R.Alvey III minhee chang Chaehyeon Chelsea Nam Hironori Fudeyasu Hsu-Feng Teng Hui Yu India Meteorological Department GoaIndia Chinese Academy of Sciences BeijingChina CSIRO EnvironmentAspendaleVictoriaAustralia National Center for Atmospheric Research ColoradoUSA Institut f¨ur Physik der Atmosph¨are Deutsches Zentrum f¨ur Luft-undBerlinGermany Cooperative Institute for Marine and Atmospheric Studies University of MiamiMiamiFloridaUSA NOAA/Atlantic Oceanographic and Meteorological Laboratory/Hurricane Research Division MiamiFloridaUSA Korea Institute of Science and Technology SeoulRepublic of Korea Colorado State University ColoradoUSA Yokohama National University YokohamaJapan National Center for Atmospheric Research/Pacific Science Association ColoradoUSA Shanghai Typhoon Institute/China Meteorological Administration ShanghaiChina

In this review,advances in the understanding of the controlling factors and physical mechanisms of tropical cyclogenesis(TCG)are summarized from recent(2018–2022)research on TCG,as presented in the Tenth International Workshop on Tropical Cyclones(IWTC-10).Observational,theoretical,and numerical modeling studies published in recent years have advanced our knowledge on the influence of large-scale environmental factors on ***,studies have shown clearly that appropriate convective coupling with tropical equatorial waves enhances the development chances of *** recently,illuminating research has been carried out on analyzing the mechanisms by which oscillations and teleconnections(El Ni˜no Southern Oscillation(ENSO)in particular)modulate TCG globally,in association with changes in the sea surface temperature(SST).In addition to this,recent research has diligently addressed different aspects of *** studies have reported the applicability of unified theories and physical mechanisms of TCG in different ocean ***,research has been carried out on TCG under different flow pattern regimes,dry air intrusion,importance of marsupial pouch,genesis of Medicanes,wind shear,convection and vertical ***,studies have discussed the possibility of near equatorial TCG provided that there is enough supply of background vertical vorticity and relatively low vertical wind *** has been made to understand the role of climate change on global and regional ***,there are still significant gaps which need to be addressed in order to better understand TCG prediction.

关键词： Tropical cyclogenesis AEW ENSO SST Marsupial pouch Dry air intrusion Moderate shear Convection Near equatorial TCG Climate change

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