Kandler, Konrad ; Schneiders, Kilian ; Heuser, Johannes ; Waza, Andebo ; Aryasree, Sudharaj ; Althausen, Dietrich ; Hofer, Julian ; Abdullaev, Sabur F. ; Makhmudov, Abduvosit N. (2020)
Differences and similarities of Central Asian, African, and Arctic dust composition from a single particle perspective.
In: Atmosphere, 11 (3)
doi: 10.3390/atmos11030269
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Mineral dust composition affects a multitude of processes in the atmosphere and adjacent compartments. Dust dry deposition was collected near source in northwest Africa, in Central Asia, and on Svalbard and at three locations of the African outflow regime. Samples were subjected to automated scanning electron microscopy with energy-dispersive X-ray analysis to obtain size and composition of 216,000 individual particles. Results show low temporal variation in estimated optical properties for each location, but considerable differences between the African, Central Asian, and Arctic regimes. No significant difference was found between the K-feldspar relative abundances, indicating comparable related ice-nucleation abilities. The mixing state between calcium and iron compounds was different for near source and transport regimes, potentially in part due to size sorting effects. As a result, in certain situations (high acid availability, limited time) atmospheric processing of the dust is expected to lead to less increased iron solubility for near-source dusts (in particular for Central Asian ones) than for transported ones (in particular of Sahelian origin).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Kandler, Konrad ; Schneiders, Kilian ; Heuser, Johannes ; Waza, Andebo ; Aryasree, Sudharaj ; Althausen, Dietrich ; Hofer, Julian ; Abdullaev, Sabur F. ; Makhmudov, Abduvosit N. |
| Art des Eintrags: | Bibliographie |
| Titel: | Differences and similarities of Central Asian, African, and Arctic dust composition from a single particle perspective |
| Sprache: | Englisch |
| Publikationsjahr: | 2020 |
| Ort: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Atmosphere |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 3 |
| Kollation: | 16 Seiten |
| DOI: | 10.3390/atmos11030269 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Mineral dust composition affects a multitude of processes in the atmosphere and adjacent compartments. Dust dry deposition was collected near source in northwest Africa, in Central Asia, and on Svalbard and at three locations of the African outflow regime. Samples were subjected to automated scanning electron microscopy with energy-dispersive X-ray analysis to obtain size and composition of 216,000 individual particles. Results show low temporal variation in estimated optical properties for each location, but considerable differences between the African, Central Asian, and Arctic regimes. No significant difference was found between the K-feldspar relative abundances, indicating comparable related ice-nucleation abilities. The mixing state between calcium and iron compounds was different for near source and transport regimes, potentially in part due to size sorting effects. As a result, in certain situations (high acid availability, limited time) atmospheric processing of the dust is expected to lead to less increased iron solubility for near-source dusts (in particular for Central Asian ones) than for transported ones (in particular of Sahelian origin). |
| Freie Schlagworte: | mineral dust, dry deposition, electron microscopy, aerosol composition |
| Zusätzliche Informationen: | This article belongs to the Special Issue Soil/Mineral Dust Aerosols in the Earth System |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Atmosphärisches Aerosol |
| Hinterlegungsdatum: | 17 Jan 2024 08:59 |
| Letzte Änderung: | 17 Jan 2024 08:59 |
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| Suche nach Titel in: | TUfind oder in Google |
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Differences and Similarities of Central Asian, African, and Arctic Dust Composition from a Single Particle Perspective. (deposited 16 Jan 2024 10:52)
- Differences and similarities of Central Asian, African, and Arctic dust composition from a single particle perspective. (deposited 17 Jan 2024 08:59) [Gegenwärtig angezeigt]
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