El Niño Southern oscillation events contribute significantly to the interannual variations of dust activity over East Asia

IF 4.5 2区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES Atmospheric Research Pub Date : 2024-12-04 DOI:10.1016/j.atmosres.2024.107846

Ruibo Zhao, Xiaoming Feng, Chaowei Zhou, Yu Zhang, Xuejing Leng, Bojie Fu

{"title":"El Niño Southern oscillation events contribute significantly to the interannual variations of dust activity over East Asia","authors":"Ruibo Zhao, Xiaoming Feng, Chaowei Zhou, Yu Zhang, Xuejing Leng, Bojie Fu","doi":"10.1016/j.atmosres.2024.107846","DOIUrl":null,"url":null,"abstract":"The mechanism of climate and vegetation change induced dust variations has been a phenomenal environmental concern in East Asia. However, the extent to which climate and vegetation cover separately affect the interannual variations of dust activity, is little known. Here in our study, the dust interannual variations and the contributions of climate and vegetation changes on dust variations were investigated and quantified through a regional climate model (RegCM4.9.5) and GeoDetector analysis. It is indicated that the dust aerosol optical depth, column burden and emission flux over East Asia all showed fluctuating downward trends followed by subsequent increases during 2000–2018. Climatic factors dominated the interannual variation of dust over East Asia, particularly the modulation of El Niño Southern Oscillation events. Vegetation improvement has occurred in most dust source regions across East Asia, playing a secondary yet positive role in dust variations, with an overall contribution rate of approximately 37 %. The spatial heterogeneity of dust variations in different regions was shaped by the effects of climate change and improved vegetation conditions.","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"29 1","pages":""},"PeriodicalIF":4.5000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atmospheric Research","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1016/j.atmosres.2024.107846","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The mechanism of climate and vegetation change induced dust variations has been a phenomenal environmental concern in East Asia. However, the extent to which climate and vegetation cover separately affect the interannual variations of dust activity, is little known. Here in our study, the dust interannual variations and the contributions of climate and vegetation changes on dust variations were investigated and quantified through a regional climate model (RegCM4.9.5) and GeoDetector analysis. It is indicated that the dust aerosol optical depth, column burden and emission flux over East Asia all showed fluctuating downward trends followed by subsequent increases during 2000–2018. Climatic factors dominated the interannual variation of dust over East Asia, particularly the modulation of El Niño Southern Oscillation events. Vegetation improvement has occurred in most dust source regions across East Asia, playing a secondary yet positive role in dust variations, with an overall contribution rate of approximately 37 %. The spatial heterogeneity of dust variations in different regions was shaped by the effects of climate change and improved vegetation conditions.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

厄尔尼诺南方涛动事件对东亚上空沙尘活动的年际变化有重大影响

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Atmospheric Research 地学-气象与大气科学

CiteScore

9.40

自引率

10.90%

发文量

460

审稿时长

47 days

期刊介绍： The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.