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The Airborne Aerosol Measurements During SAMUM-1 and SAMUM-2: What Have we Learned About Dust?

Weinzierl, Bernadett and Petzold, Andreas and Esselborn, Michael and Minikin, Andreas and Fix, Andreas and Wirth, Martin and Fiebig, Markus (2008) The Airborne Aerosol Measurements During SAMUM-1 and SAMUM-2: What Have we Learned About Dust? In: Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract A41K-08, 89 (53). AGU Fall Meeting 2008, 2008-12-15 - 2008-12-19, San Francisco, CA (USA).

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Official URL: http://www.agu.org/cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm08&database=%2Fdata%2Fepubs%2Fwais%2Findexes%2Ffm08%2Ffm08&maxhits=200&="A41K-08"

Abstract

dust properties is poorly understood over many regions of the world. Major unknowns are the dust size distribution that spans a range from 0.01 μm to about 100 μm, and the vertical distribution of dust properties. The Saharan Mineral Dust Experiment (SAMUM) aimed to characterise the optical, physical, chemical, and radiative properties of Saharan dust. In a first field experiment (SAMUM-1), conducted in May/June 2006 in Morocco, the properties of pure dust close to the source were investigated. The second field experiment (SAMUM-2) took place in the Cape Verde area in January/February 2008 and focussed on the transformation of the dust properties during transport and mixing with biomass burning aerosol. For the field experiments, the DLR Falcon research aircraft was equipped with an extensive set of aerosol instruments for size, volatility, and absorption measurements, impactor sampling for chemical analyses and with a nadir- looking high spectral resolution lidar (HSRL). During SAMUM-1, three large-scale dust events were probed which extended from Morocco to Portugal. The upper boundary of the dust layers was found at altitudes between 4 and 6 km above sea level (a.s.l.). In all dust layers, particles with diameters larger than 10 μm were present, and in 80% of the layers no particles larger than 40 μm were present. During SAMUM-2, ten mission flights were conducted from Cape Verde providing data of dust and biomass burning plumes. On average, the dust plumes were situated below 2 km a.s.l., while the central African biomass burning layers covered the altitude range between 2 and 4-5 km. Presented results will cover profiles of dust size distributions and dust optical properties. The microphysical properties of dust measured during SAMUM-2 will be compared with those measured during SAMUM-1. Similarities and differences in the size distribution observed over Cape Verde compared

Item URL in elib:https://elib.dlr.de/57891/
Document Type:Conference or Workshop Item (Speech)
Title:The Airborne Aerosol Measurements During SAMUM-1 and SAMUM-2: What Have we Learned About Dust?
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Weinzierl, BernadettUNSPECIFIEDUNSPECIFIED
Petzold, AndreasUNSPECIFIEDUNSPECIFIED
Esselborn, MichaelUNSPECIFIEDUNSPECIFIED
Minikin, AndreasUNSPECIFIEDUNSPECIFIED
Fix, AndreasUNSPECIFIEDUNSPECIFIED
Wirth, MartinUNSPECIFIEDUNSPECIFIED
Fiebig, MarkusNILU, Kjeller, NUNSPECIFIED
Date:18 December 2008
Journal or Publication Title:Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract A41K-08
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:89
Status:Published
Keywords:SAMUM-1; SAMUM-2; airborne measurements; aerosols and particles; mineral dust; Morocco; Cape Verde;
Event Title:AGU Fall Meeting 2008
Event Location:San Francisco, CA (USA)
Event Type:international Conference
Event Dates:2008-12-15 - 2008-12-19
Organizer:American Geophysical Union (AGU)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignment
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Weinzierl, Dr.rer.nat. Bernadett
Deposited On:27 Jan 2009
Last Modified:27 Apr 2009 15:47

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