Abstract

Understanding temporal coherence in particulate matter (PM) pollution across East Asian outflow regions is crucial for collaborative efforts in addressing air pollution challenges. In this study, we analyze daily PM exceedance patterns using ground-based measurements over the past two decades, focusing on the influence of El Niño-Southern Oscillation (ENSO) and Asian dust activity. ENSO-related coherent PM exceedance shows lower occurrence during El Niño compared to La Niña in spring, due to weakened continental outflows and increased precipitation. Temporal distribution of dust-related coherent PM exceedance closely mirrors springtime dust activity in source regions, indicating significant dust emission impact on outflow regions. Our findings have implications for climate variability and the assessment of multi-decade model simulations.

Details

Title
Temporal coherence in particulate matter in East Asian outflow regions: fingerprints of ENSO and Asian dust
Author
Kueh, Mien-Tze 1   VIAFID ORCID Logo  ; Lin, Chuan-Yao 1   VIAFID ORCID Logo  ; Chien, Yi-Yun 1   VIAFID ORCID Logo 

1  Academia Sinica, Research Center for Environmental Changes, Taipei, Taiwan (GRID:grid.28665.3f) (ISNI:0000 0001 2287 1366) 
Pages
201
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
23973722
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41612-023-00530-z
ProQuest document ID
2896047672
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.