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Transport of mineral dust derived from airborne wind lidar measurements during SALTRACE

Chouza Keil, Fernando and Reitebuch, Oliver and Groß, Silke and Rahm, Stephan and Freudenthaler, Volker and Toledano, Carlos and Weinzierl, Bernadett (2015) Transport of mineral dust derived from airborne wind lidar measurements during SALTRACE. In: EGU General Assembly (ISSN: 1474-7065). EGU General Assembly 2015, 12 – 17 April 2015, Vienna, Austria. ISSN 1474-7065

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Abstract

During the SALTRACE field experiment conducted between the 10 of June and the 15 of July 2013, the transport and properties of Saharan dust were characterized by a 2-µm Doppler wind lidar (DWL) deployed on the DLR Falcon 20 research aircraft. Unlike aerosol lidars, the DLW is able to simultaneously measure wind fields and -by means of an adequate calibration- aerosol optical properties, which is more adequate for aerosol transport studies. The retrieved horizontal and vertical wind speed provide a direct observation of dust long range transport mechanisms across the Atlantic (e.g. by the African easterly jet) from Western Africa to the Caribbean. Vertical wind observations revealed the structure of island induced lee waves in the Cape Verde and Barbados regions. A novel method for the calibration of DWLs based on simultaneous measurements with a ground-based aerosol lidar and sun photometer was developed. After being calibrated, the system is able to retrieve quantitative aerosol backscatter and extinction coefficients, which is usually not obtained from coherent lidars. Results from the validation with a ground-based aerosol lidar in Barbados and the CALIPSO satellite instrument will be discussed.

Item URL in elib:https://elib.dlr.de/100074/
Document Type:Conference or Workshop Item (Speech)
Title:Transport of mineral dust derived from airborne wind lidar measurements during SALTRACE
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Chouza Keil, FernandoDLR, IPAUNSPECIFIED
Reitebuch, OliverDLR, IPAUNSPECIFIED
Groß, SilkeDLR, IPAUNSPECIFIED
Rahm, StephanDLR, IPAUNSPECIFIED
Freudenthaler, VolkerLMU, MünchenUNSPECIFIED
Toledano, CarlosUniv. de Valladolid, Valladolid, EUNSPECIFIED
Weinzierl, BernadettDLR, IPAUNSPECIFIED
Date:16 April 2015
Journal or Publication Title:EGU General Assembly (ISSN: 1474-7065)
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISSN:1474-7065
Status:Published
Keywords:SALTRACE, Doppler Wind Lidar, Aerosols, Long range transport
Event Title:EGU General Assembly 2015
Event Location:Vienna, Austria
Event Type:international Conference
Event Dates:12 – 17 April 2015
Organizer:EGU
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt ADM
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Chouza Keil, Fernando German
Deposited On:30 Nov 2015 07:58
Last Modified:31 May 2020 23:15

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