热带气象学报2025，Vol.41Issue(6)：847-858,12.DOI:10.16032/j.issn.1004-4965.2025.071
辐射日变化对台风登陆减弱阶段影响的数值模拟研究
Simulation Study of the Diurnal Radiation Variation Impact on the Landfall Weakening Process of Typhoon
摘要
Abstract
The WRF model was used for numerical sensitivity simulations to analyze the influence of short-wave radiation diurnal variation on the landing and weakening stage of Typhoon In-fa(2106).The results show that the CTRL experiment successfully reproduced the weakening process of the typhoon.In the daytime experiment,the simulated typhoon weakened more slowly and wasmaintained for a longer time,Whereas it weakened rapidly in the nighttime experiment.Compared with the CTRL experiment,the daytime experiment had stronger short-wave radiation,leadingwhich led to increased surface temperature,latent heat flux from surface evaporation,and water vapor from the ocean to the atmosphere,keeping the lower atmosphere highly unstable.Sustained radiative heating and latent heat release in the middle layer produced strong vertical motion.Meanwhile,increased relative humidity in the upper layer promoted upper-level cloud formation,and upper-level stability decreased due to cloud radiative forcing.The continuous release of high-intensity latent heat prevented the breakdown of the typhoon's warm core structure,which is the main reason the typhoon intensity was maintained.In the nighttime experiment,however,surface radiative cooling reduced the energy supply to the lower layer.The typhoon thus released its unstable energy quickly,reached a stable state rapidly,and consequently weakened swiftly.关键词
台风/辐射/日变化/数值模拟Key words
typhoon/radiation/diurnal variation/numerical simulation分类
天文与地球科学引用本文复制引用
WEN Xiaopei,WU Wei..辐射日变化对台风登陆减弱阶段影响的数值模拟研究[J].热带气象学报,2025,41(6):847-858,12.基金项目
国家自然科学基金(U2342214) （U2342214）
山东省自然科学基金(ZR2022MD040) （ZR2022MD040）
长岛国家气候观象台开放基金项目(2023cdkfz01) （2023cdkfz01）
山东省气象局课题(2023sdqxz07、SDQXTD2024-1、2023sdqxm07) （2023sdqxz07、SDQXTD2024-1、2023sdqxm07）
山东台风与海洋创新团队项目(SDCXTD2021-2) （SDCXTD2021-2）
山东省气象科学研究所科技创新基金(sdqks202501)共同资助 （sdqks202501）
