Minimizing light absorption measurement artifacts of the Aethalometer. evaluation of five correction algorithms
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Authors
Collaud Coen, Martine
Apituley, Arnaud
Ceburnis, Darius
Fierz-Schmidhauser, Rahel
Flentje, Harald
Henzing, J.S.
Jennings, Stephen G.
Moerman, Marcel
Petzold, Andreas
Author (Corporation)
Publication date
13.04.2010
Typ of student thesis
Course of study
Collections
Type
01A - Journal article
Editors
Editor (Corporation)
Supervisor
Parent work
Atmospheric Measurement Techniques
Special issue
DOI of the original publication
Link
Series
Series number
Volume
3
Issue / Number
2
Pages / Duration
457-474
Patent number
Publisher / Publishing institution
Copernicus
Place of publication / Event location
Göttingen
Edition
Version
Programming language
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Practice partner / Client
Abstract
The aerosol light absorption coefficient is an essential parameter involved in atmospheric radiation budget calculations. The Aethalometer (AE) has the great advantage of measuring the aerosol light absorption coefficient at several wavelengths, but the derived absorption coefficients are systematically too high when compared to reference methods. Up to now, four different correction algorithms of the AE absorption coefficients have been proposed by several authors. A new correction scheme based on these previously published methods has been developed, which accounts for the optical properties of the aerosol particles embedded in the filter. All the corrections have been tested on six datasets representing different aerosol types and loadings and include multi-wavelength AE and white-light AE. All the corrections have also been evaluated through comparison with a Multi-Angle Absorption Photometer (MAAP) for four datasets lasting between 6 months and five years. The modification of the wavelength dependence by the different corrections is analyzed in detail. The performances and the limits of all AE corrections are determined and recommendations are given.
Keywords
Subject (DDC)
550 - Geowissenschaften
Event
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ISBN
ISSN
1867-8548
1867-1381
1867-1381
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Gold
License
Citation
COLLAUD COEN, Martine, Ernest WEINGARTNER, Arnaud APITULEY, Darius CEBURNIS, Rahel FIERZ-SCHMIDHAUSER, Harald FLENTJE, J.S. HENZING, Stephen G. JENNINGS, Marcel MOERMAN, Andreas PETZOLD, Otmar SCHMID und Urs BALTENSPERGER, 2010. Minimizing light absorption measurement artifacts of the Aethalometer. evaluation of five correction algorithms. Atmospheric Measurement Techniques. 13 April 2010. Bd. 3, Nr. 2, S. 457–474. DOI 10.5194/amt-3-457-2010. Verfügbar unter: https://doi.org/10.26041/fhnw-9677