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The mysterious long-range transport of giant mineral dust particles

Does, M. van der; Knippertz, P.; Zschenderlein, P.; Giles Harrison, R.; Stuut, J.-B. W.

Giant mineral dust particles (>75 mm in diameter) found far from their source have long puzzled scientists. These wind-blown particles affect the atmosphere’s radiation balance, clouds, and the ocean carbon cycle but are generally ignored in models. Here, we report new observations of individual giant Saharan dust particles of up to 450 mm in diameter sampled in air over the Atlantic Ocean at 2400 and 3500 km from the west African coast. Past research points to fast horizontal transport, turbulence, uplift in convective systems, and electrical levitation of particles as possible explanations for this fascinating phenomenon. We present a critical assessment of these mechanisms and propose several lines of research we deem promising to further advance our understanding and modeling.

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Verlagsausgabe §
DOI: 10.5445/IR/1000089138
Veröffentlicht am 15.01.2019
DOI: 10.1126/sciadv.aau2768
Zitationen: 2
Web of Science
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2375-2548
KITopen-ID: 1000089138
HGF-Programm 12.01.02 (POF III, LK 01)
Erschienen in Science advances
Band 4
Heft 12
Seiten Art. Nr.: eaau2768
Nachgewiesen in Web of Science
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