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Impact of aerosol on post-frontal convective clouds over Germany

Rieger, D. 1; Bangert, M. 1; Kottmeier, C. 1; Vogel, H. ORCID iD icon 1; Vogel, B. 1
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


We carried out simulations with predefined and simulated aerosol distributions in order to investigate the improvement in the forecasting capabilities of an operational weather forecast model by the use of an improved aerosol representation. This study focuses on convective cumulus clouds developing after the passage of a cold front on 25 April 2008 over Germany. The northerly flow after the cold front leads to increased sea salt aerosol concentrations compared to prefrontal conditions. High aerosol number concentrations are simulated in the interactive scenario representing typically polluted conditions. Nevertheless, due to the presence of sea salt particles, effective radii of cloud droplets reach values typical of pristine clouds (between 7 µm and 13 µm) at the same time. Compared to the predefined continental and maritime aerosol scenarios, the simulated aerosol distribution leads to a significant change in cloud properties such as cloud droplet radii and number concentrations. Averaged over the domain covered by the convective cumuli clouds, we found a systematic decrease in precipitation with increasing aerosol number concentrations. ... mehr

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DOI: 10.5445/IR/1000042092
DOI: 10.3402/tellusb.v66.22528
Zitationen: 14
Web of Science
Zitationen: 14
Zitationen: 21
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung Troposphärenforschung (IMKTRO)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2014
Sprache Englisch
Identifikator ISSN: 0280-6509, 1600-0889
KITopen-ID: 1000042092
HGF-Programm 12.03.03 (POF II, LK 01) Region.Chemie-Aerosol-Klima-Wechselw.
Erschienen in Tellus / B
Verlag Taylor & Francis Open Access
Band 66
Heft 1
Seiten 22528/1-15
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter aerosol–cloud interaction, precipitation, natural aerosol, anthropogenic aerosol, regional modelling
Nachgewiesen in Scopus
Web of Science
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