文献类型：期刊文献

英文题名：Impact of Medium-Energy Electrons on Antarctic Stratospheric Ozone During 2013-2014 Simulated with the WACCM-SIC Model

作者：Chen, Zhenfeng[1];Zhuoga, Deqing[2];Qi, Pengran[3,4];Xu, Ting[5];Chang, Shujie[1];Zhang, Yuanzi[1];Ren, Ci[6]

机构：[1]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental S, Lab Coastal Ocean Variat & Disaster Predict,Minist, Coll Ocean & Meteorol,Key Lab Space Ocean Remote S, Zhanjiang 524088, Peoples R China;[2]Inst Tibet Plateau Prov Environm Protect Sci, Lhasa 850000, Peoples R China;[3]Beijing Huafeng Tianji Meteorol Serv Co Ltd, Beijing 100081, Peoples R China;[4]China Meteorol Adm, Key Lab Meteorol Med & Hlth, Beijing 100081, Peoples R China;[5]Meteorol Bur Shenzhen Municipal, Shenzhen 518040, Peoples R China;[6]Tibet Univ, Coll Ecol Environm, Lhasa 850000, Peoples R China

年份：2026

卷号：16

期号：10

外文期刊名：APPLIED SCIENCES-BASEL

收录：SCI-EXPANDED(收录号：WOS:001774217800001)、、EI(收录号：20262220800897)、Scopus(收录号：2-s2.0-105040233758)、WOS

基金：This research was funded by National Natural Science Foundation of China (42475082), Tropical Ocean Environment in Western Coastal Waters Observation and Research Station of Guangdong Province (2024B1212040008), Innovative Team Plan for Department of Education of Guangdong Province (2023KCXTD015), First-Class Discipline Plan of Guangdong Province (080503032101 and 231420003), Innovation Team Project of General University in Guangdong Province of China (2024KCXTD042), Science and Technology Project of the Tibet Autonomous Region of China "Study on Near-Surface Ozone Pollution Characteristics and Meteorological Conditions in Tibet" (XZ202403ZY0013), Humanities and Social Sciences General Project of the Ministry of Education of China. "Research on the Construction of a Knowledge Graph for National Wetland Parks on the Qinghai-Tibet Plateau and the Enhancement of Science Education Functions for University Students" (23YJAZH019), Project of Key Laboratory of Guangdong Provincial Department of Education (2025KSYS009).

语种：英文

外文关键词：medium-energy electrons; stratospheric ozone; WACCM-SIC

外文摘要：The Antarctic stratospheric ozone plays a crucial role in the polar climate system and is strongly influenced by energetic particle precipitation. Among these processes, medium-energy electron (MEE) precipitation enhances the production of odd nitrogen (NOx) in the polar mesosphere and stratosphere, thereby driving ozone depletion through catalytic reactions. However, quantifying its atmospheric impact remains challenging, largely because the spatial and temporal variability of MEE is poorly constrained, and most current global chemistry-climate models lack a realistic MEE forcing. This study employs the Whole Atmosphere Community Climate Model coupled with Sodankyl & auml; Ion Chemistry (WACCM-SIC) to investigate the influence of MEE precipitation during 2013-2014, when moderate geomagnetic storms were more frequent in the winter of 2013. A control simulation (Case1) and two sensitivity experiments (Case 2 and Case 3) were conducted to isolate MEE-driven effects. Model-simulated NOx (NO + NO2) and ozone concentrations agree well with satellite observations, indicating that WACCM-SIC captures the key photochemical and dynamical processes. The results further suggest that the direct impact of MEE precipitation on the middle and lower atmosphere during winter is relatively weak. Nevertheless, MEE-generated NOx can be efficiently transported downward within the polar vortex, reaching altitudes below 15 km. In these regions, MEE-related NOx enhancement can reach up to 5%, with values during the winter of 2013 approximately twice those in 2014. Sensitivity experiments further reveal that enhanced NOx leads to pronounced ozone depletion in the lower stratosphere, with ozone losses reaching up to 25%. A clear negative relationship between NOx and ozone is therefore evident, highlighting the importance of accurately representing MEE precipitation in chemistry-climate models.