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Mapping water constituents in Lake Constance using CHRIS/Proba

Miksa, Sabine und Heege, Thomas und Kisselev, Viatcheslav und Gege, Peter (2005) Mapping water constituents in Lake Constance using CHRIS/Proba. In: Proceedings of the Second Workshop CHRIS/Proba, ESA SP-593, June 2005 (CD-ROM). ESA Publications Division. 3rd ESA CHRIS/Proba Workshop, ESRIN, Frascati, Italy, 21-23 March 2005. ISBN 92-9092-904-9.

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Kurzfassung

CHRIS-PROBA data were acquired at 3 days in 2003 and one day in 2004 at the Eastern part of Lake Constance. Field campaigns were organised at these days in order to measure optical parameters of the water and the atmosphere and concentrations of water constituents from ship for validation. Five deep water sampling stations were chosen. The modular inversion program (MIP) developed by Heege, Miksa and Kisselev was used for the coupled retrieval of water constituents and aerosol concentrations, for atmospheric and water surface corrections and for optical closure and sensor calibration tests. Different viewing angles of CHRIS images of 2003 were used to test the atmospheric correction algorithm. Spectra were calculated and adjusted to the measured ones by fitting the concentrations of 3 aerosol types (rural, maritime, urban) and 3 water constituents (suspended matter, chlorophyll, Gelbstoff). The resulting mean relative error for suspended matter is 17%, for chlorophyll it is 28% which is within the error margin of the measurements. Maps of chlorophyll, suspended matter and Gelbstoff were generated for all viewing angles of CHRIS/PROBA where sunglint contamination is absent. By comparing these maps the accuracies of the resulting water constituents are determined. Looking at one pixel from different angles, the water constituent concentration is supposed to be the same. The mean relative error for each sampling station is 37% for chlorophyll and 24% for suspended matter. A more detailed statistical analysis is in preparation.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=2005,
Titel:Mapping water constituents in Lake Constance using CHRIS/Proba
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Miksa, SabineNICHT SPEZIFIZIERT
Heege, ThomasNICHT SPEZIFIZIERT
Kisselev, Viatcheslavruss. Akademie der Wissenschaften, St. Petersburg
Gege, PeterNICHT SPEZIFIZIERT
Datum:2005
Erschienen in:Proceedings of the Second Workshop CHRIS/Proba
Band:ESA SP-593, June 2005 (CD-ROM)
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Lacoste, H.NICHT SPEZIFIZIERT
Verlag:ESA Publications Division
ISBN:92-9092-904-9
Status:veröffentlicht
Stichwörter:CHRIS/Proba, water constituents
Veranstaltungstitel:3rd ESA CHRIS/Proba Workshop, ESRIN, Frascati, Italy, 21-23 March 2005
Veranstalter :ESA
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):NICHT SPEZIFIZIERT
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung
Hinterlegt von: Cornelia Roehl
Hinterlegt am:27 Jan 2006
Letzte Änderung:06 Jan 2010 22:40

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