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Deriving Aerosol Parameters from in–situ Spectrometer Measurements for Validation of Remote Sensing Products

Riedel, Sebastian and Janas, Joanna and Gege, Peter and Oppelt, Natascha (2017) Deriving Aerosol Parameters from in–situ Spectrometer Measurements for Validation of Remote Sensing Products. In: Proceedings of SPIE, 10424 (1), pp. 1-11. SPIE Remote Sensing: Remote Sensing of Clouds and the Atmosphere XXII, 11.-14.Sep.2017, Warschau, Polen. DOI: 10.1117/12.2280290

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Abstract

Uncertainties of aerosol parameters are the limiting factor for atmospheric correction over inland and coastal waters. For validating remote sensing products from these optically complex and spatially inhomogeneous waters the spatial resolution of automated sun photometer networks like AERONET is too coarse and additional measurements on the test site are required. We have developed a method which allows the derivation of aerosol parameters from measurements with any spectrometer with suitable spectral range and resolution. This method uses a pair of downwelling irradiance and sky radiance measurements for the extraction of the turbidity coefficient and aerosol Ångström exponent. The data can be acquired fast and reliable at almost any place during a wide range of weather conditions. A comparison to aerosol parameters measured with a Cimel sun photometer provided by AERONET shows a reasonable agreement for the Ångström exponent. The turbidity coefficient did not agree well with AERONET values due to fit ambiguities, indicating that future research should focus on methods to handle parameter correlations within the underlying model.

Item URL in elib:https://elib.dlr.de/114495/
Document Type:Conference or Workshop Item (Speech)
Title:Deriving Aerosol Parameters from in–situ Spectrometer Measurements for Validation of Remote Sensing Products
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riedel, SebastianS.Riedel (at) dlr.deUNSPECIFIED
Janas, Joannajoanna.janas (at) dlr.deUNSPECIFIED
Gege, Peterpeter.gege (at) dlr.dehttps://orcid.org/0000-0003-0939-5267
Oppelt, Nataschaoppelt (at) geographie.uni-kiel.deUNSPECIFIED
Date:2017
Journal or Publication Title:Proceedings of SPIE
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:10424
DOI :10.1117/12.2280290
Page Range:pp. 1-11
Series Name:Remote Sensing of Clouds and the Atmosphere XXII
Status:Published
Keywords:Aerosol optical thickness; turbidity coefficient; Ångström exponent; spectrometer measurements; atmospheric correction; sun photometer; inland waters; field measurements
Event Title:SPIE Remote Sensing: Remote Sensing of Clouds and the Atmosphere XXII
Event Location:Warschau, Polen
Event Type:international Conference
Event Dates:11.-14.Sep.2017
Organizer:SPIE
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):Vorhaben Spectroscopic Methods in Remote Sensing
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Riedel, Sebastian
Deposited On:17 Oct 2017 13:50
Last Modified:31 Jul 2019 20:11

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