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Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops

Müller, T. and Henzing, J.S. and de Leeuw, G. and Wiedensohler, A. and Alastuey, A. and Angelov, H. and Bizjak, M. and Collaud Coen, Martine and Engström, J.E. and Gruening, C. and Hillamo, R. and Hoffer, A. and Imre, K. and Ivanow, P. and Jennings, G. and Sun, J.Y. and Kalivitis, N. and Karlsson, H. and Komppula, M. and Laj, P. and Li, S.-M. and Lunder, C. and Marinoni, A. and Martins dos Santos, S. and Moerman, Marcel and Nowak, A. and Ogren, J.A. and Petzold, Andreas and Pichon, J.M. and Rodriquez, S. and Sharma, S. and Sheridan, P.J. and Teinilä, K. and Tuch, T. and Viana, M. and Virkkula, A. and Weingartner, Ernest and Wilhelm, R. and Wang, Y.Q. (2011) Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops. Atmospheric Measurement Techniques, 4, pp. 245-268. DOI: 10.5194/amt-4-245-2011.

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Official URL: http://www.atmos-meas-tech.net/4/245/2011/

Abstract

Absorption photometers for real time application have been available since the 1980s, but the use of filterbased instruments to derive information on aerosol properties (absorption coefficient and black carbon, BC) is still a matter of debate. Several workshops have been conducted to investigate the performance of individual instruments over the intervening years. Two workshops with large sets of aerosol absorption photometers were conducted in 2005 and 2007. The data from these instruments were corrected using existing methods before further analysis. The intercomparison shows a large variation between the responses to absorbing aerosol particles for different types of instruments. The unit to unit variability between instruments can be up to 30% for Particle Soot Absorption Photometers (PSAPs) and Aethalometers. Multi Angle Absorption Photometers (MAAPs) showed a variability of less than 5%. Reasons for the high variability were identified to be variations in sample flow and spot size. It was observed that different flow rates influence system performance with respect to response to absorption and instrumental noise. Measurements with non absorbing particles showed that the current corrections of a cross sensitivity to particle scattering are not sufficient. Remaining cross sensitivities were found to be a function of the total particle load on the filter. The large variation between the response to absorbing aerosol particles for different types of instruments indicates that current correction functions for absorption photometers are not adequate..

Document Type:Article
Title:Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops
Authors:
AuthorsInstitution or Email of Authors
Müller, T.LfT, Leipzig
Henzing, J.S.TNO, Utrecht, NL
de Leeuw, G.National Univ. of Ireland, Galway
Wiedensohler, A.LfT, Leipzig
Alastuey, A.UNSPECIFIED
Angelov, H.UNSPECIFIED
Bizjak, M.UNSPECIFIED
Collaud Coen, MartineUNSPECIFIED
Engström, J.E.UNSPECIFIED
Gruening, C.UNSPECIFIED
Hillamo, R.UNSPECIFIED
Hoffer, A.UNSPECIFIED
Imre, K.UNSPECIFIED
Ivanow, P.UNSPECIFIED
Jennings, G.UNSPECIFIED
Sun, J.Y.UNSPECIFIED
Kalivitis, N.UNSPECIFIED
Karlsson, H.UNSPECIFIED
Komppula, M.UNSPECIFIED
Laj, P.UNSPECIFIED
Li, S.-M.UNSPECIFIED
Lunder, C.UNSPECIFIED
Marinoni, A.UNSPECIFIED
Martins dos Santos, S.UNSPECIFIED
Moerman, MarcelUNSPECIFIED
Nowak, A.UNSPECIFIED
Ogren, J.A.UNSPECIFIED
Petzold, AndreasDLR
Pichon, J.M.UNSPECIFIED
Rodriquez, S.UNSPECIFIED
Sharma, S.UNSPECIFIED
Sheridan, P.J.UNSPECIFIED
Teinilä, K.UNSPECIFIED
Tuch, T.UNSPECIFIED
Viana, M.UNSPECIFIED
Virkkula, A.UNSPECIFIED
Weingartner, ErnestUNSPECIFIED
Wilhelm, R.UNSPECIFIED
Wang, Y.Q.UNSPECIFIED
Date:2011
Journal or Publication Title:Atmospheric Measurement Techniques
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:4
DOI:10.5194/amt-4-245-2011
Page Range:pp. 245-268
Status:Published
Keywords:aerosol absorption, aerosol properties, black carbon, soot, MAAP, Aethalometer, aerosol measurement, aerosol climate, effects
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics, Transport
HGF - Program Themes:ATM and Operation, Transport System
DLR - Research area:Aeronautics, Transport
DLR - Program:L AO - Air Traffic Management and Operation, V VS - Verkehrssystem
DLR - Research theme (Project):L - Climate, Weather and Environment, V - Verkehrsentwicklung und Umwelt (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:12 May 2011 15:01
Last Modified:12 Dec 2013 21:17

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