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Characterization of long-term and seasonal variations of black carbon (BC) concentrations at Neumayer, Antarctica

Weller, Rolf and Minikin, Andreas and Petzold, Andreas and Wagenbach, Dietmar and König-Langlo, Gert (2013) Characterization of long-term and seasonal variations of black carbon (BC) concentrations at Neumayer, Antarctica. Atmospheric Chemistry and Physics, 13, pp. 1579-1590. Copernicus Publications. DOI: 10.5194/acp-13-1579-2013 ISSN 1680-7316

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Official URL: http://www.atmos-chem-phys.net/13/1579/2013/acp-13-1579-2013.html


Continuous black carbon (BC) observations were conducted from 1999 through 2009 by an Aethalometer (AE10) and from 2006 through 2011 by a Multi-Angle Absorption Photometer (MAAP) at Neumayer Station (NM) under stringent contamination control. Considering the respective observation period, BC concentrations measured by the MAAP were somewhat higher (median ± standard deviation: 2.1 ± 2.0 ng m−3) compared to the AE10 results (1.6 ± 2.1 ng m−3). Neither for the AE10 nor for the MAAP data set a significant long-term trend could be detected. Consistently a pronounced seasonality was observed with both instruments showing a primary annual maximum between October and November and a minimum in April with a maximum/minimum ratio of 4.5/1.6 = 3.8 and 2.7/0.64 = 4.2 for the MAAP and AE10 data, respectively. Occasionally a secondary summer maximum in January/February was visible. With the aim to assess the impact of BC on optical properties of the aerosol at NM, we evaluated the BC data along with particle scattering coefficients measured by an integrating nephelometer. We found the mean single scattering albedo of ω550 = 0.992 ± 0.0090 (median: 0.994) at a wavelength of 550 nm with a range of values from 0.95 to 1.0.

Item URL in elib:https://elib.dlr.de/86880/
Document Type:Article
Title:Characterization of long-term and seasonal variations of black carbon (BC) concentrations at Neumayer, Antarctica
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Weller, RolfAWI, BremerhavenUNSPECIFIED
Wagenbach, DietmarUniv. Heidelberg, HeidelbergUNSPECIFIED
König-Langlo, GertAWI, BremerhavenUNSPECIFIED
Date:8 February 2013
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.5194/acp-13-1579-2013
Page Range:pp. 1579-1590
Publisher:Copernicus Publications
Keywords:Aerosol, soot, MAAP
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 - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Minikin, Dr.rer.nat. Andreas
Deposited On:17 Dec 2013 08:59
Last Modified:02 May 2019 14:04

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