Gravity Wave Activity and Stratosphere-Troposphere Exchange During Typhoon Molave(2020)  

作　　者：HUANG Dong WAN Ling-feng WAN Yi-shun CHANG Shu-jie MA Xin ZHAO Kai-jing 黄栋;万凌峰;万贻顺;常舒捷;马欣;赵锴晶(College of Ocean and Meteorology/South China Sea Institute of Marine Meteorology/Laboratory for Coastal Ocean Variation and Disaster Prediction/Key Laboratory of Climate,Resources and Environment in Continental Shelf Sea and Deep Sea(LCRE)/Key Laboratory of Space Ocean Remote Sensing and Application,Ministry of Natural Resources,Guangdong Ocean University,Zhanjiang,Guangdong 524088 China;Frontier Science Center for Deep Ocean Multispheres and Earth System(DOMES),Institute for Advanced Ocean Study(IAOS),Ocean University of China,Qingdao,Shandong 266100 China;School of Earth and Environment,University of Leeds,Leeds LS29JT UK;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030 China)

机构地区：[1]College of Ocean and Meteorology/South China Sea Institute of Marine Meteorology/Laboratory for Coastal Ocean Variation and Disaster Prediction/Key Laboratory of Climate,Resources and Environment in Continental Shelf Sea and Deep Sea(LCRE)/Key Laboratory of Space Ocean Remote Sensing and Application,Ministry of Natural Resources,Guangdong Ocean University,Zhanjiang,Guangdong 524088 China [2]Frontier Science Center for Deep Ocean Multispheres and Earth System(DOMES),Institute for Advanced Ocean Study(IAOS),Ocean University of China,Qingdao,Shandong 266100 China [3]School of Earth and Environment,University of Leeds,Leeds LS29JT UK [4]Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030 China

出　　处：《Journal of Tropical Meteorology》2024年第3期306-326,共21页热带气象学报（英文版）

基　　金：Guangdong Basic and Applied Basic Research Foundation(2023A1515011323);National Natural Science Foun-dation of China(42130604,42130605,72293604);Guangdong Provincial Observation and Research Station for Tropical Ocean Environment in Western Coastal Waters(GSTOEW);First-Class Discipline Plan of Guangdong Province(080503032101,231420003);Fundamental Research Funds for the Central Universities(202362001,202072010);China Scholarship Council(202208440223);Natural Science Foundation of Shanghai(23ZR1473800)。

摘　　要：To investigate the stratosphere-troposphere exchange(STE)process induced by the gravity waves(GWs)caused by Typhoon Molave(2020)in the upper troposphere and lower stratosphere,we analyzed the ERA5 reanalysis data provided by the European Centre for Medium-Range Weather Forecasts and the CMA Tropical Cyclone Best Track Dataset.We also adopted the mesoscale forecast model Weather Research and Forecasting model V4.3 for numerical simulation.Most of the previous studies were about typhoon-induced STE and typhoon-induced GWs,while our research focused on the STE caused by typhoon-induced gravity waves.Our analysis shows that most of the time,the gravity wave signal of Typhoon Molave appeared below the tropopause.It was stronger on the east side of the typhoon center(10°-20°N,110°-120°E)than on the west side,suggesting an eastward tilted structure with height increase.When the GWs in the upper troposphere and lower stratosphere region on the west side of the typhoon center broke up,it produced strong turbulence,resulting in stratosphere-troposphere exchange.At this time,the average potential vorticity vertical flux increased with the average ozone mass mixing ratio.The gravity wave events and STE process simulated by the WRF model were basically consistent with the results of ERA5 reanalysis data,but the time of gravity wave breaking was different.This study indicates that after the breaking of the GWs induced by typhoons,turbulent mixing will also be generated,and thus the STE.

关 键 词：gravity wave TYPHOON stratosphere-troposphere exchange STE upper troposphere and lower stratosphere UTLS 

分 类 号：P401[天文地球—大气物理学与大气环境]