Recent Enhanced Deep Troposphere-to-Stratosphere AirMass Transport Accompanying the Weakening Asian Monsoon

扫码查看

原文链接

国家科技期刊平台
NETL
NSTL
万方数据

外文摘要：The Asian monsoon(AM)region is a well-known region with prevailing stratosphere-troposphere exchange(STE).However,how the STE across this region changes with the weakening AM remains unclear.Here,we particu-larly diagnose the air mass transport between the planetary boundary layer(PBL)and the stratosphere over the AM region during 1992-2017 using the Lagrangian particle dispersion model FLEXPART based on the ERA-Interim reanalysis data.The results show that both the downward and upward deep STEs exhibit a detectable increasing trend,while the latter,namely,the deep troposphere-to-stratosphere transport(DTST),is relatively more significant.Further analysis reveals that the long-term trend of DTST over the AM region could be partly attributed to changes in the Pacific Walker circulation and the air temperature(especially at upper levels).Additionally,it is found that DTST increases markedly over the tropical oceanic regions,while the increasing DTST into the stratosphere can be attrib-uted to the enhanced air masses originated from the PBL over the terrestrial regions,where large amounts of pollut-ant emissions occur.The results imply that the influence of the DTST on the chemical composition and the climate of the stratosphere over the AM region is expected to become increasingly important,and is thereby of relevance to cli-mate projection in an evolving climate.

外文关键词：

stratosphere-troposphere exchange(STE)air mass transportdeep troposphere-to-stratosphere trans-port(DTST)Asian monsoon(AM)pollution

作者：

Bin CHEN、Jianzhong MA、Wei ZHANG、Jianchun BIAN、Tianliang ZHAO、Xiangde XU

展开 >

作者单位：

State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,China Meteorological Administration,Beijing 100081,China

Department of Plants,Soils and Climate,Utah State University,UT 84322,USA

Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science & Technology,Nanjing 210044,China

展开 >

基金：

National Key Research and Development Program of ChinaSecond Tibetan Plateau Comprehensive Scientific Expedition and Research ProgramScience and Technology Development Fund of Chinese Academy of Meteorological SciencesScience and Technology Development Fund of Chinese Academy of Meteorological Sciences

项目编号：

2023YFC30107002019QZKK01052023KJ0272024KJ012

出版年：

2024

DOI：

10.1007/s13351-024-3155-5

气象学报(英文版)

中国气象学会

气象学报(英文版)

CSTPCD

影响因子：0.57

ISSN：0894-0525

年,卷(期)：2024.38(4)