Spatial Source Contribution and Interannual Variation in Deposition of Dust Aerosols Over the Chinese Loess Plateau
Rattachement africain : no, fi, se, cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract The Chinese Loess Plateau (CLP) in northern China is home to one of the most prominent loess records in the world, reflecting past eolian dust activity in East Asia. However, their interpretation is hampered by ambiguity in the origin of loess‐forming dust and an incomplete understanding of the circulation forcing dust accumulation. In this study, we used a novel modeling approach combining a dust emission model FLEXDUST with simulated back trajectories from FLEXPART to trace the dust back to where it was emitted. Over 21 years (1999–2019), we modeled back trajectories for fine (∼2 μm) and super‐coarse (∼20 μm) dust particles at six CLP sites during the peak dust storm season from March to May. FLEXPART source‐receptor relationships are combined with the dust emission inventory from FLEXDUST to create site‐dependent high‐resolution maps of the source contribution of deposited dust. The nearby dust emission areas were found to be the main source of dust to the CLP. Dust deposition across the CLP was found to predominantly occur via wet removal, with also some super‐coarse dust from distant emission regions being wet deposited following high‐level tropospheric transport. The high topography located on the downwind side of the emission area plays an essential role in forcing the emitted super‐coarse dust upward. On an interannual scale, the phase of the Arctic Oscillation in the preceding winter was found to have a strong association with the spring deposition rate on the CLP, while the strength of the East Asian Winter Monsoon was less influential.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Spatial Source Contribution and Interannual Variation in Deposition of Dust Aerosols Over the Chinese Loess Plateau
- Date Crossref
- 23/07/2024
- Éditeur
- American Geophysical Union (AGU)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Norwegian Meteorological Institute pays non établi dans la noticeOrganisme public
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University of Oslo Department of Geosciences pays non établi dans la noticeUniversité ou école supérieure
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Finnish Meteorological Institute pays non établi dans la noticeOrganisme public
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University of Helsinki Department of Geosciences and Geography pays non établi dans la noticeUniversité ou école supérieure
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Uppsala University Department of Earth Sciences pays non établi dans la noticeUniversité ou école supérieure
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Kjeller Innovasjon (Norway) pays non établi dans la noticeEntreprise
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China University of Geosciences pays non établi dans la noticeUniversité ou école supérieure
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NILU Kjeller Norway pays non établi dans la noticeInstitution
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Department of Atmospheric Science School of Environmental Studies China University of Geoscience Wuhan China Department of Atmospheric Science pays non établi dans la noticeUniversité ou école supérieure
Norwegian Meteorological Institute, Department of Geosciences — University of Oslo et Finnish Meteorological Institute, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.