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Desert dust observation from space - Application of measured mineral component infrared extinction spectra

Klüser, Lars und Kleiber, Paul D. und Holzer-Popp, Thomas und Grassian, Vicki H. (2012) Desert dust observation from space - Application of measured mineral component infrared extinction spectra. Atmospheric Environment, 54, Seiten 419-427. DOI: 10.1016/j.atmosenv.2012.02.011.

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Offizielle URL: http://dx.doi.org/10.1016/j.atmosenv.2012.02.011

Kurzfassung

Measured extinction spectra of six different components of desert dust have been used as input for a mineral dust retrieval algorithm for the Infrared Atmospheric Sounding Interferometer IASI based on Singular Vector Decomposition. The use of measured dust component extinction spectra rather than dust sample-based optical properties widely used in thermal infrared applications improves retrieval results significantly. Correlation between IASI derived dust optical depth (at 0.5µm) and AERONET sunphotometer observations from six months over Northern Africa, the Arabian Peninsula and Asia improved from formerly 0.623 to now 0.757 while the root-mean-square difference decreased from 0.322 to now 0.174 and the bias decreased (in terms of its absolute value) from 0.181 to 0.003. The dynamically adjusted e-1 envelope of the deviation histogram between AERONETand IASI dust AOD at 0.5µm is at 0.160 while 80% of all IASI observations are within AOD0.5µm +/- 0.2 of respective AERONET values. Spatial patterns of dust observations with the retrieval based on dust components compare very well with known features in terms of monthly mean gridded Aerosol Optical Depth. Although originally being developed for Northern Africa, the Arabian Peninsula and adjacent Oceans, the retrieval method performs equally well in Asian dust source regions and downwind areas. As a further strength it provides observations at day and night overpasses of the Metop spacecraft, thus twice daily.

Dokumentart:Zeitschriftenbeitrag
Titel:Desert dust observation from space - Application of measured mineral component infrared extinction spectra
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Klüser, LarsUniversität Augsburg
Kleiber, Paul D.University of Iowa
Holzer-Popp, Thomasthomas.holzer-popp@dlr.de
Grassian, Vicki H.University of Iowa
Datum:2012
Erschienen in:Atmospheric Environment
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:54
DOI :10.1016/j.atmosenv.2012.02.011
Seitenbereich:Seiten 419-427
Status:veröffentlicht
Stichwörter:Mineral Dust; Remote Sensing; Thermal Infrared; IASI
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Atmosphäre
Hinterlegt von: Dipl. Met. Lars Klüser
Hinterlegt am:11 Jun 2012 10:36
Letzte Änderung:19 Apr 2013 10:39

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