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Inverse Methods: a Powerful Tool for Evaluating Aerosol Data, Exemplified on Cases With Relevance for the Atmosphere and the Aerosol Climate Effect

Fiebig, Markus and Ogren, John A. and Petzold, Andreas (2006) Inverse Methods: a Powerful Tool for Evaluating Aerosol Data, Exemplified on Cases With Relevance for the Atmosphere and the Aerosol Climate Effect. In: 2006 International Aerosol Conference, pp. 1277-1278. 2006 International Aerosol Conference, 2006-09-10 - 2006-09-15, St Paul, MN (USA).

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Abstract

For a complete description of a given aerosol, more than one parameter is necessary, e.g. parameters concerning size distribution, chemical composition, and particle morphology. On the other hand, most instruments measuring aerosol properties are sensitive mostly to one parameter, but cross-sensitive to others. These cross-sensitivities are often eliminated by assumptions during data evaluation, inducing systematic uncertainties in the results. The use of assumptions can be reduced by combining the information of several instruments on the same aerosol and using inverse methods for interpretation of the data. The presentation focuses on two application examples of these methods. The first example concerns a size distribution inversion algorithm that combines data from several instruments into one size distribution. The second example deals with an algorithm that retrieves the aerosol asymmetry parameter (with respect to particle scattering) from measurements of the aerosol absorption and spectral scattering and hemispheric backscattering coefficients, thereby providing a set of parameters that completely describes an aerosol with respect to its direct climate effect.

Document Type:Conference or Workshop Item (Speech)
Title:Inverse Methods: a Powerful Tool for Evaluating Aerosol Data, Exemplified on Cases With Relevance for the Atmosphere and the Aerosol Climate Effect
Authors:
AuthorsInstitution or Email of Authors
Fiebig, MarkusUNSPECIFIED
Ogren, John A.NOAA, Boulder, CO, USA
Petzold, AndreasUNSPECIFIED
Date:September 2006
Journal or Publication Title:2006 International Aerosol Conference
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1277-1278
Status:Published
Keywords:atmospheric aerosol, inverse methods, aerosol optical properties
Event Title:2006 International Aerosol Conference
Event Location:St Paul, MN (USA)
Event Type:international Conference
Event Dates:2006-09-10 - 2006-09-15
Organizer:International Aerosol Research Assembly
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. Markus Fiebig
Deposited On:22 Feb 2007
Last Modified:12 Dec 2013 20:21

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