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Regional modelling of Saharan dust and biomass burning smoke -� Part 1: Model description and evaluation

Heinold, B. und Tegen, I. und Schepanski, K. und Tesche, K. und Esselborn, M. und Freudenthaler, V. und Gross, S. und Kandler, K. und Knippertz, P. und Müller, D. und Schladitz, A. und Toledano, C. und Weinzierl, B. und Ansmann, A. und Althausen, D. und Müller, T. und Petzold, A. und Wiedensohler, A. (2011) Regional modelling of Saharan dust and biomass burning smoke -� Part 1: Model description and evaluation. Tellus B - Chemical and Physical Meteorology, 63B, Seiten 781-799. DOI: 10.1111/j.1600-0889.2011.00570.x.

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Offizielle URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2011.00570.x/pdf

Kurzfassung

The spatio-temporal evolution of the Saharan dust and biomass-burning plume during the SAMUM-2 field campaign in January and February 2008 is simulated at 28 km horizontal resolution with the regional model-system COSMOMUSCAT. The model performance is thoroughly tested using routine ground-based and space-borne remote sensing and local field measurements. Good agreement with the observations is found in many cases regarding transport patterns, aerosol optical thicknesses and the ratio of dust to smoke aerosol. The model also captures major features of the complex aerosol layering. Nevertheless, discrepancies in the modelled aerosol distribution occur, which are analysed in detail. The dry synoptic dynamics controlling dust uplift and transport during the dry season are well described by the model, but surface wind peaks associated with the breakdown of nocturnal low-level jets are not always reproduced. Thus, a strong dust outbreak is underestimated. While dust emission modelling is a priori more challenging, since strength and placement of dust sources depend on on-line computed winds, considerable inaccuracies also arise in observation-based estimates of biomass-burning emissions. They are caused by cloud and spatial errors of satellite fire products and uncertainties in fire emission parameters, and can lead to unrealistic model results of smoke transport.

Dokumentart:Zeitschriftenbeitrag
Titel:Regional modelling of Saharan dust and biomass burning smoke -� Part 1: Model description and evaluation
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Heinold, B.ift, Leipzig
Tegen, I.ift, Leipzig
Schepanski, K.Univ of Leeds, Leeds, UK
Tesche, K.ift, Leipzig
Esselborn, M.DLR
Freudenthaler, V.LMU, München
Gross, S.LMU, München
Kandler, K.Darmstadt Univ. of Technology
Knippertz, P.Univ of Leeds, Leeds, UK
Müller, D.ift, Leipzig
Schladitz, A.ift, Leipzig
Toledano, C.LMU, München
Weinzierl, B.DLR
Ansmann, A.ift, Leipzig
Althausen, D.ift, Leipzig
Müller, T.ift, Leipzig
Petzold, A.DLR
Wiedensohler, A.ift, Leipzig
Datum:2011
Erschienen in:Tellus B - Chemical and Physical Meteorology
Referierte Publikation:Ja
In Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:63B
DOI :10.1111/j.1600-0889.2011.00570.x
Seitenbereich:Seiten 781-799
Status:veröffentlicht
Stichwörter:desert dust, remote sensing, dust size distribution
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 > Atmosphärische Spurenstoffe
Hinterlegt von: Jana Freund
Hinterlegt am:01 Aug 2011 12:25
Letzte Änderung:12 Dez 2013 21:20

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