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Aircraft Measurements of Tropospheric Aerosol in Antarctica

Minikin, Andreas and Krejci, Radovan and Herber, Andreas and Stohl, Andreas (2010) Aircraft Measurements of Tropospheric Aerosol in Antarctica. International Polar Year Oslo Science Conference 2010, 8.-12. Jun. 2010, Oslo, Norwegen.

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Abstract

To date, the knowledge on the properties, sources and transport pathways of aerosol in the Antarctic troposphere is still incomplete owing to the logistical difficulties in performing measurement programs in Antarctica and the sparseness of manned observation sites. One particular shortcoming for better understanding of aerosol properties, distribution and transport patterns is the lack of information on the aerosol vertical distribution in the Antarctic troposphere. To improve knowledge in this area, the AGAMES (Antarctic Trace Gas and Aerosol Airborne Measurement Study) aircraft field experiment was conducted in the Antarctic summer season December/January 2006/7. The AGAMES study constitutes the first ever airborne campaign in Antarctica using a comprehensive aerosol instrument package for study of tropospheric aerosol. The aircraft used in this study was the Dornier 228-200 turboprop aircraft (Polar 2) of the Alfred Wegener Institute for Polar and Marine Research (AWI) in Bremerhaven. Altogether 36 flights were performed mainly in two Antarctic areas, close to Neumayer and close to Syowa. The flights covered an altitude range up to ~7000 m. Here we report on results of aerosol microphysical properties, aerosol spatial variability and air mass origin based on the FLEXPART Lagrangian particle dispersion model. The aerosol size distribution was measured in the diameter range from 0.004 to 20 µm by a combination of instruments: four condensation particle counters, a Differential Mobility Particle Sizer (DMPS) system, and three optical particle counters, one in the cabin (Grimm model 7.309, size range 0.26-2.2 µm) and two under the wings (PMS PCASP-100X, size range 0.12-3 µm and FSSP-300, size range in this study 1-20 µm). We will discuss vertical gradients and variability of aerosol particles, as well as observations of particle formation events and compare the results to aerosol observations in the Arctic.

Document Type:Conference or Workshop Item (Speech)
Title:Aircraft Measurements of Tropospheric Aerosol in Antarctica
Authors:
AuthorsInstitution or Email of Authors
Minikin, AndreasUNSPECIFIED
Krejci, RadovanStockholm Univ., S
Herber, AndreasAWI für Polar und Meeresforschung, Bremerhaven
Stohl, AndreasNILU, Kjeller, N
Date:8 June 2010
Keywords:Antarctica, aerosol, troposphere
Event Title:International Polar Year Oslo Science Conference 2010
Event Location:Oslo, Norwegen
Event Type:international Conference
Event Dates:8.-12. Jun. 2010
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 Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Dr.rer.nat. Andreas Minikin
Deposited On:08 Dec 2010 16:35
Last Modified:08 Dec 2010 16:35

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