elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Accessibility | Contact | Deutsch
Fontsize: [-] Text [+]

Mixing of mineral dust with urban pollution aerosol over Dakar (Senegal): Impact on dust physico-chemical and radiative properties.

Petzold, A. and Veira, A. and Mund, S. and Esselborn, M. and Kiemle, C. and Weinzierl, B. and Hamburger, T. and Ehret, G. and Lieke, K. and Kandler, K. (2011) Mixing of mineral dust with urban pollution aerosol over Dakar (Senegal): Impact on dust physico-chemical and radiative properties. Tellus B - Chemical and Physical Meteorology, 63B, pp. 619-634. Taylor & Francis. doi: 10.1111/j.1600-0889.2011.00547.x.

[img]
Preview
PDF
1MB

Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2011.00547.x/pdf

Abstract

In the framework of the Saharan Mineral Dust Experiment (SAMUM) in 2008, the mixing of the urban pollution plume of Dakar (Senegal) with mineral dust was studied in detail using the German research aircraft Falcon which was equipped with a nadir-looking high spectral resolution lidar (HSRL) and extensive aerosol in situ instrumentation. The mineral dust layer as well as the urban pollution plume were probed remotely by the HSRL and in situ. Back trajectory analyses were used to attribute aerosol samples to source regions.We found that the emission from the region of Dakar increased the aerosol optical depth (532 nm) from approximately 0.30 over sea and over land east of Dakar to 0.35 in the city outflow. In the urban area, local black carbon (BC) emissions, or soot respectively, contributed more than 75% to aerosol absorption at 530 nm. In the dust layer, the single-scattering albedo at 530 nm was 0.96 â�� 0.99, whereas we found a value of 0.908 �± 0.018 for the aerosol dominated by urban pollution. After 6h of transport over the North Atlantic, the externally mixed mode of secondary aerosol particles had almost completely vanished, whereas the BC agglomerates (soot) were still externally mixed with mineral dust particles.

Item URL in elib:https://elib.dlr.de/70586/
Document Type:Article
Title:Mixing of mineral dust with urban pollution aerosol over Dakar (Senegal): Impact on dust physico-chemical and radiative properties.
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Petzold, A.DLRUNSPECIFIEDUNSPECIFIED
Veira, A.DLRUNSPECIFIEDUNSPECIFIED
Mund, S.DLRUNSPECIFIEDUNSPECIFIED
Esselborn, M.DLRUNSPECIFIEDUNSPECIFIED
Kiemle, C.DLRUNSPECIFIEDUNSPECIFIED
Weinzierl, B.DLRUNSPECIFIEDUNSPECIFIED
Hamburger, T.DLRUNSPECIFIEDUNSPECIFIED
Ehret, G.DLRUNSPECIFIEDUNSPECIFIED
Lieke, K.TU DarmstadtUNSPECIFIEDUNSPECIFIED
Kandler, K.TU DarmstadtUNSPECIFIEDUNSPECIFIED
Date:2011
Journal or Publication Title:Tellus B - Chemical and Physical Meteorology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:63B
DOI:10.1111/j.1600-0889.2011.00547.x
Page Range:pp. 619-634
Publisher:Taylor & Francis
Status:Published
Keywords:SAMUM, aerosol particles, mineral dust particles
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - LIDAR research and development
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Freund, Jana
Deposited On:01 Aug 2011 12:49
Last Modified:08 Mar 2018 18:52

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
OpenAIRE Validator logo electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.