台风“麦莎”活动期间TTL区域的物质分布特征分析  

Analysis on distribution characteristics of substances in TTL region during typhoon Matsa

作　　者：陈丹[1,2] 苏涛[2] CHEN Dan SU Tao(Key Laboratory of Meteorological Disaster of Ministry of Education/Joint lnternational Research Laboratory of Climate and Environment Change/ Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters , Nanjing University of Information Science ＆ Technology, Nanjing 210044, China School of Atmospheric Sciences, Nanfing University of Information Science ＆ Technology, Nanjing 210044, China)

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心,南京210044 [2]南京信息工程大学大气科学学院,南京210044

出　　处：《气象科学》2016年第6期760-769,共10页Journal of the Meteorological Sciences

基　　金：江苏省自然科学基金青年基金资助项目(BK20130994);国家自然科学基金青年基金资助项目(41305038);教育部博士学科点专项科研基金新教师类资助项目(20133228120003)

摘　　要：利用ECMWF逐6 h的ERA-Interim再分析资料,分析了台风"麦莎"的环流场、位势高度场以及涡度场随时间的演变,了解台风的发生发展过程。在此基础上,进一步分析了台风发生发展期间热带对流层顶(TTL,称为热带对流层到经流层的过渡带)区域的云覆盖情况和微量物质(臭氧、云冰、水汽)分布特征,并对其产生的原因进行了初步探究。结果表明:(1)台风活动强盛地区的TTL区域臭氧浓度相对较低。(2)台风活动期间TTL区域云冰和水汽的浓度明显升高,浓度的高值中心处于台风中心附近。(3)台风活动会使其上空TTL区域的云覆盖量增加,在TTL区域上存在一个云量的极值区。(4)台风引起的垂直运动造成了对流层和平流层之间的物质交换,进而对TTL区域的微量物质产生重要影响。By using the ERA-Interim reanalysis data of ECMWF, the evolution of circulation field, geopotential height and vorticity of typhoon was analyzed, the development process was obtained. Based on the above, the distribution characteristics of substances （cloud cover, ozone, cloud ice, water vapor） in Tropical Tropopause Layer（TTL） region were also analyzed, and its possible reasons were explored. Results show that ： （ 1 ） The ozone concentration of the TTL region （ abundant typhoon activity） is relative- ly lower. （2）The cloud ice and water vapor concentrations increase in the TTL region during the typhoon period, whose concentration centers locate around the typhoon center. （3） The typhoon activity contrib- utes to the increasing of cloud cover in TTL region, there is an extreme value. （4） Vertical upward move-ment caused by the typhoon results in the stratosphere-troposphere exchange, and thus has a major impact on the distribution of trace substances in the TT region.

关 键 词：台风“麦莎” 热带对流层到平流层的过渡带(TTL) 平流层对流层交换过程 物质分布 

分 类 号：P412.4[天文地球—大气科学及气象学]