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Impacts of El Niño-Southern Oscillation on global fire PM2.5 during 2000-2023

Yonghang Hu Xu Yue Chenguang Tian

大气和海洋科学快报(英文版)2025,Vol.18Issue(3):59-65,7.
大气和海洋科学快报(英文版)2025,Vol.18Issue(3):59-65,7.DOI:10.1016/j.aosl.2025.100597

Impacts of El Niño-Southern Oscillation on global fire PM2.5 during 2000-2023

Impacts of El Niño-Southern Oscillation on global fire PM2.5 during 2000-2023

Yonghang Hu 1Xu Yue 1Chenguang Tian1

作者信息

  • 1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control,Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,School of Environmental Science and Engineering,Nanjing University of Information Science & Technology(NUIST),Nanjing,China
  • 折叠

摘要

Abstract

厄尔尼诺-南方涛动(ENSO)是全球气候变化的主要驱动因素,对区域火灾活动及其相关污染物排放有深远影响.本研究分析了2000-2023年期间ENSO对全球火灾排放及火灾引起的PM2.5浓度的影响.在厄尔尼诺事件期间,由于异常增温和降水不足,全球火灾排放增加5.9%-20.0%,其中印度尼西亚,北美和澳大利亚为火排放增幅最显著地区.相比之下,拉尼娜事件期间全球火灾排放减少3.2%-9.9%,具体变化取决于所使用的火灾排放清单.在此背景下,火灾引起的PM2.5浓度在厄尔尼诺事件期间显著增加,印度尼西亚增加27.5%-71.0%,北美增加49.2%-116.5%,澳大利亚增加17.5%-42.6%;而在拉尼娜事件期间,这些地区的PM2.5浓度分别减少26.6%-52.5%,19.4%-37.3%和14.5%-24.4%.研究结果表明,ENSO从区域到全球尺度上深刻影响着火排放和空气污染物浓度,相关结论为减缓极端气候事件对空气质量的影响提供了重要的科学依据.

关键词

厄尔尼诺-南方涛动/气候变化/野火/PM2.5

Key words

ENSO/Climate change/Wildfire/PM2.5

引用本文复制引用

Yonghang Hu,Xu Yue,Chenguang Tian..Impacts of El Niño-Southern Oscillation on global fire PM2.5 during 2000-2023[J].大气和海洋科学快报(英文版),2025,18(3):59-65,7.

基金项目

This research was jointly supported by the National Key Research and Development Program of China[grant number 2023YFF0805402],the National Natural Science Foundation of China[grant number 42405107],the Natural Science Foundation of Jiangsu Province[grant number BK20240715],and the Jiangsu Funding Program for Excellent Postdoctoral Talent[grant number 2023ZB113]. ()

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