[대기] [대기과학세미나] 김백민 교수 (부경대학교 환경대기과학전공)
일시 : 2025-04-15(화) 16:00 ~ 17:00
연사 : 김백민 교수
소속 : 부경대학교 환경대기과학전공
문의 : 02-880-6723
장소 : 501동 504호 세미나실
Title : Unveiling the pivotal influence of sea spray heat fluxes on tropical cyclone rapid intensification
Abstract : Predicting rapid tropical cyclone (TC) intensification remains a challenge, partially due to neglected factors like sea spray-mediated heat flux. To shed light on the specific roles of spray-mediated sensible and latent heat fluxes, we conducted sensitivity experiments with heat flux parameterizations. Our results demonstrate that the inclusion and variation of the spray-mediated sensible heat significantly reduce model errors when compared against dropsonde data. These findings quantify the pivotal role of spray-mediated sensible heat flux in accurately predicting TC rapid intensification compared to previous studies. Without sea spray processes, ocean-coupled model simulations could not reproduce the steep intensification rate observed in multi-case studies of four high-impact TCs. In this talk, I will discuss how spray-mediated heat flux affects TC energetics through turbulent heat exchange and subsequent humid air inflow through primary and secondary circulations. Both hurricane and typhoon cases are discussed focusing on the transformative role of sea spray in turbulent heat exchange.
Abstract : Predicting rapid tropical cyclone (TC) intensification remains a challenge, partially due to neglected factors like sea spray-mediated heat flux. To shed light on the specific roles of spray-mediated sensible and latent heat fluxes, we conducted sensitivity experiments with heat flux parameterizations. Our results demonstrate that the inclusion and variation of the spray-mediated sensible heat significantly reduce model errors when compared against dropsonde data. These findings quantify the pivotal role of spray-mediated sensible heat flux in accurately predicting TC rapid intensification compared to previous studies. Without sea spray processes, ocean-coupled model simulations could not reproduce the steep intensification rate observed in multi-case studies of four high-impact TCs. In this talk, I will discuss how spray-mediated heat flux affects TC energetics through turbulent heat exchange and subsequent humid air inflow through primary and secondary circulations. Both hurricane and typhoon cases are discussed focusing on the transformative role of sea spray in turbulent heat exchange.
