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Dust mobilization and transport in the northern Sahara during SAMUM 2006 � a meteorological overview

Knippertz, Peter and Ansmann, Albert and Althausen, Dietrich and Müller, Detlef and Tesche, Matthias and Bierwirth, Eike and Dinter, Tilman and Müller, Thomas and von Hoyningen-Huene, Wolfgang and Schepanski, Kerstin and Wendisch, Manfred and Heinold, Bernd and Kandler, Konrad and Petzold, Andreas and Schütz, Lothar and Tegen, Ina (2009) Dust mobilization and transport in the northern Sahara during SAMUM 2006 âÂ�Â� a meteorological overview. Tellus B - Chemical and Physical Meteorology, 61B, pp. 12-31. DOI: 10.1111/j.1600-0889.2008.00380.x.

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Abstract

The SAMUM field campaign in southern Morocco in May/June 2006 provides valuable data to study the emission, and the horizontal and vertical transports of mineral dust in the Northern Sahara. Radiosonde and lidar observations show differential advection of air masses with different characteristics during stable nighttime conditions and up to 5-km deep vertical mixing in the strongly convective boundary layer during the day. Lagrangian and synoptic analyses of selected dust periods point to a topographic channel from western Tunisia to central Algeria as a dust source region. Significant emission events are related to cold surges from the Mediterranean in association with eastward passing upper-level waves and lee cyclogeneses south of the Atlas Mountains. Other relevant events are local emissions under a distinct cut-off low over northwestern Africa and gust fronts associated with dry thunderstorms over the Malian and Algerian Sahara. The latter are badly represented in analyses from the European Centre for Medium�Range Weather Forecasts and in a regional dust model, most likely due to problems with moist convective dynamics and a lack of observations in this region. This aspect needs further study. The meteorological source identification is consistent with estimates of optical and mineralogical properties of dust samples.

Document Type:Article
Title:Dust mobilization and transport in the northern Sahara during SAMUM 2006 � a meteorological overview
Authors:
AuthorsInstitution or Email of Authors
Knippertz, PeterJohannes Gutenberg Univ. Mainz, Mainz
Ansmann, AlbertIfT, Leipzig
Althausen, DietrichIfT, Leipzig
Müller, DetlefIfT, Leipzig
Tesche, MatthiasIfT, Leipzig
Bierwirth, EikeJohannes Gutenberg Univ. Mainz, Mainz
Dinter, TilmanUni Bremen, Bremen
Müller, ThomasIfT, Leipzig
von Hoyningen-Huene, WolfgangUni Bremen, Bremen
Schepanski, KerstinIfT, Leipzig
Wendisch, ManfredIfT, Leipzig
Heinold, BerndIfT, Leipzig
Kandler, KonradDarmstadt Univ. of Technology
Petzold, AndreasUNSPECIFIED
Schütz, LotharJohannes Gutenberg Univ. Mainz, Mainz
Tegen, InaIfT, Leipzig
Date:2009
Journal or Publication Title:Tellus B - Chemical and Physical Meteorology
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:61B
DOI:10.1111/j.1600-0889.2008.00380.x
Page Range:pp. 12-31
Status:Published
Keywords:Saharan dust, SAMUM
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben LIDAR-Forschung und -Entwicklung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:30 Mar 2011 15:45
Last Modified:12 Dec 2013 21:16

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