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Urban emission hot spots as sources for remote aerosol deposition

Kunkel, Daniel und Lawrence, Mark G. und Tost, Holger und Kerkweg, Astrid und Jöckel, Patrick und Borrmann, Stephan (2012) Urban emission hot spots as sources for remote aerosol deposition. Geophysical Research Letters, 39 (L01808), Seiten 1-6. DOI: 10.1029/2011GL049634.

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Offizielle URL: http://www.agu.org/pubs/crossref/2012/2011GL049634.shtml

Kurzfassung

Large point sources such as major population centers (MPCs) emit pollutants which can be deposited nearby or transported over long distances before deposition. We have used tracer simulations of aerosols emitted from MPCs worldwide to assess the fractions which are deposited at various distances away from their source location. Considering only source location, prevailing meteorology, and the aerosol size and solubility, we show that fine aerosol particles have a high potential to pollute remote regions. About half of the emitted mass of aerosol tracers with an ambient diameter ≤1.0 μm is typically deposited in regions more than 1000 km away from the source. Furthermore, using the Köppen-Geiger climate classification to categorize the sources into various climate classes we find substantial differences in the deposition potential between these classes. Tracers originating in arid regions show the largest remote deposition potentials, with values more than doubled compared to the smallest potentials from tracers in tropical regions. Seasonal changes in atmospheric conditions lead to variations in the remote deposition potentials. On average the remote deposition potentials in summer correspond to about 70–80% of the values in winter, with a large spread among the climate classes. For tracers from tropical regions the summer remote deposition values are only about 31% of the winter values, while they are about 95% for tracers from arid regions.

Dokumentart:Zeitschriftenbeitrag
Titel:Urban emission hot spots as sources for remote aerosol deposition
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Kunkel, DanielMPI, Mainz
Lawrence, Mark G.MPI, Mainz
Tost, HolgerJohannes-Gutenberg Univ., Mainz
Kerkweg, AstridJohannes-Gutenberg Univ., Mainz
Jöckel, PatrickPatrick.Joeckel@dlr.de
Borrmann, StephanMPI, Mainz
Datum:2012
Erschienen in:Geophysical Research Letters
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:39
DOI :10.1029/2011GL049634
Seitenbereich:Seiten 1-6
Status:veröffentlicht
Stichwörter:aerosol, megacities, urban hot-spots, aerosol deposition, aerosol transport, atmospheric chemistry modelling
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Patrick Jöckel
Hinterlegt am:30 Jan 2012 12:26
Letzte Änderung:26 Mär 2013 13:36

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