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Modelling of a strong dust event in the complex terrain of the Dead Sea valley during the passage of a gust front

Kishcha, P.; Rieger, D.; Metzger, J.; Starobinets, B.; Bangert, M.; Vogel, H.; Schättler, U.; Corsmeier, U.; Alpert, P.; Vogel, B.

Abstract (englisch):
The area of the Dead Sea valley and the adjacent regions are often affected by mineral dust. This study focuses on an extreme dust episode occurring on 22 March 2013, where near-surface dust concentrations of up to 7000 µg m−3 were encountered in the Dead Sea region. This episode is of great interest as it was accompanied by high wind speeds and a gust front that rapidly passed the Judean Mountains. Wind was even accelerated on the lee side of the Judean Mountains leading to a severe downslope wind. We simulated this situation with the comprehensive online-coupled weather forecast model COSMO-ART. Fair agreement was found between the simulated meteorological variables and the observations. The model was capable of producing a reasonable spatiotemporal distribution of near-surface dust concentration, consistent with available measurements in this area. With respect to the time of the maximum near-surface dust concentration in the Dead Sea valley, the model captured it almost perfectly compared to the observed total suspended particle (TSP) concentrations. COSMO-ART showed that the high near-surface dust concentration in the Dead Sea ... mehr

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3402/tellusb.v68.29751
ISSN: 0280-6509
URN: urn:nbn:de:swb:90-534422
KITopen ID: 1000053442
HGF-Programm 12.01.02; LK 01
Erschienen in Tellus B
Band 68
Seiten 29751/1-19
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte mineral dust, Dead Sea valley, complex terrain, regional modelling, dust aerosol optical depth
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