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Investigations on the capability of CHRIS-PROBA for monitoring of water constituents in Lake Constance compared to MERIS

Miksa, Sabine und Gege, Peter und Heege, Thomas (2004) Investigations on the capability of CHRIS-PROBA for monitoring of water constituents in Lake Constance compared to MERIS. In: Proceedings of the Second Workshop CHRIS/Proba, ESA SP-578, July 2004 (CD-ROM), Seiten 162-171. ESA Publications Division. 2nd ESA CHRIS/Proba Workshop, Frascati, 28-30 Apr 2004. ISBN 92-9092-889-1.

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Kurzfassung

CHRIS-PROBA data were acquired at 3 days in 2003 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. For two dates also MERIS full-resolution data are available. Based on the in-situ measurements, forward calculations were made to simulate for different conditions the expected CHRIS and MERIS top-of-atmosphere radiance spectra. The result is a comparison of CHRIS with MERIS and with simulated radiances. CHRIS spectra were reproduced in a satisfying way whereas MERIS spectra are disappointingly misaligned and have to be recalculated to exclude miscalculation as the source of this error. Further, the calculated spectra were 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 values for concentrations of suspended matter and Gelbstoff have a mean relative difference of 16% and 26% respectively which is within the error margin of in-situ data, chlorophyll concentrations have a mean relative difference of 47%. All calculations were done using the modular inversion program MIP, which is being developed at DLR for processing multispectral and hyperspectral images from surface waters.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=2004,
Titel:Investigations on the capability of CHRIS-PROBA for monitoring of water constituents in Lake Constance compared to MERIS
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Miksa, SabineNICHT SPEZIFIZIERT
Gege, PeterNICHT SPEZIFIZIERT
Heege, ThomasNICHT SPEZIFIZIERT
Datum:2004
Erschienen in:Proceedings of the Second Workshop CHRIS/Proba
Band:ESA SP-578, July 2004 (CD-ROM)
Seitenbereich:Seiten 162-171
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Lacoste, H.NICHT SPEZIFIZIERT
Verlag:ESA Publications Division
ISBN:92-9092-889-1
Status:veröffentlicht
Stichwörter:CHRIS-PROBA, monitoring, water constituents
Veranstaltungstitel:2nd ESA CHRIS/Proba Workshop, Frascati, 28-30 Apr 2004
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 22:26

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