深厚西南涡与高原涡引起的平流层-对流层质量交换过程分析  

Stratosphere-troposphere exchange processes caused by deep southwest vortex and plateau vortex

作　　者：张琪[1,2] 李跃清[1] 青泉[2] ZHANG Qi;LI Yueqing;QING Quan(Institute of Tibetan Plateau Meteorology,China Meteorological Administration,Heavy Rain and Drought-Flood Disasters in Plateau/Basin Key Laboratory of Sichuan Province,Chengdu 610072,China;Meteorological Observatory in Sichuan Province,Chengdu 610072,China)

机构地区：[1]中国气象局成都高原气象研究所/高原与盆地暴雨旱涝灾害四川省重点实验室,四川成都610072 [2]四川省气象台,四川成都610072

出　　处：《干旱气象》2025年第1期32-40,共9页Journal of Arid Meteorology

基　　金：国家自然科学基金气象联合基金重点项目(U2242202);国家自然科学基金重大研究计划集成项目(91937301);第二次青藏高原综合科学考察研究项目(2019QZKK0103、2019QZKK0105);高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目(SCQXKJYJXMS202213);中国气象局水文气象重点开放实验室开放研究课题(24SWQXZ033)共同资助。

摘　　要：为探索深厚型高原涡和西南涡系统能否引发大气平流层-对流层之间的物质交换,利用欧洲中期天气预报中心再分析资料,详细分析了2013年6月30日深厚型西南涡和2010年7月23日高原涡过程中的动力结构、穿越对流层顶的质量通量、气块运动轨迹。结果表明:深厚西南涡和高原涡在垂直方向上具有显著的深度,其内部上升气流发展异常强烈,最高可冲破100 hPa,穿越对流层顶进入平流层;低涡形成和成熟阶段均存在较强的平流层-对流层质量交换,垂直输送项对总通量的贡献最大;异常强烈的低涡上升运动使得部分对流层空气块被输送至平流层。此结果揭示了一些新的重要事实:深厚西南涡和高原涡可引起平流层-对流层的质量交换,可能是对流层-平流层大气交换的一个新输送窗口。In order to explore whether the deep plateau vortex and southwest vortex system can trigger the material exchange between the atmospheric stratosphere-troposphere,based on the European Centre for Medium-Range Weather Forecasts(ECMWF)reanalysis data,the dynamic structure,the cross-tropopause mass flux and the trajectory of the gas block during the deep southwest vortex on June 30,2013 and the plateau vortex on July 23,2010 were analyzed in detail.The results show that:The deep southwest vortex and plateau vortex develop significantly in the vertical direction,and their internal updrafts develop exceptionally strongly,reaching up to 100 hPa and crossing the troposphere into the stratosphere.There is a strong mass exchange between the stratosphere and troposphere during the formation and mature stages of the vortexes,and the vertical transport term contributes the most to the total flux.The unusually strong upward motion of the low vortex causes part of the tropospheric air mass to be transported to the stratosphere.These results re⁃veal some new important facts:The deep southwest vortex and plateau vortex can cause the mass exchange of the stratospheretroposphere,and may be a new transport window for the troposphere-stratosphere atmospheric exchange.

关 键 词：深厚型西南涡 深厚型高原涡 对流层-平流层质量交换 大气输送过程 

分 类 号：P458[天文地球—大气科学及气象学]