In situ evidence of non-zero reflectance in the OLCI 1020nm band for a turbid estuary

A spectroradiometer able to measure up to 2500nm has been used to measure the reflectance for the Ocean and Land Color Instrument (OLCI) 1020nm band. In July and October 2010 two measurement campaigns were organized at the Scheldt river to collect reflectance spectra and corresponding Total Suspende...

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Detalles Bibliográficos
Autores principales: Knaeps, E., Dogliotti, A.I., Raymaekers, D., Ruddick, K., Sterckx, S.
Formato: JOUR
Materias:
Black pixel assumption
OLCI
SWIR
Water
Airborne prism experiments
Black pixels
Hydrolight
In-situ
Measurement campaign
Pure water
Reflectance spectrum
Scheldt
Spectro-radiometers
Total suspended matter
Turbidity
Reflection
absorption coefficient
airborne sensing
color
correlation
estuarine environment
in situ measurement
ocean color
pixel
radiometer
reflectance
suspended load
turbidity
water
Scheldt River
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00344257_v120_n_p133_Knaeps
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:A spectroradiometer able to measure up to 2500nm has been used to measure the reflectance for the Ocean and Land Color Instrument (OLCI) 1020nm band. In July and October 2010 two measurement campaigns were organized at the Scheldt river to collect reflectance spectra and corresponding Total Suspended Matter (TSM) concentration and turbidity. A wide range of TSM concentration was covered from 15 to 402mgL -1. The measurements show a significant increase in reflectance between 950 and 1150nm, corresponding to a decrease in the pure water absorption coefficient. A high correlation was observed between the reflectance at 1020 and 1071nm and TSM concentration. The results were confirmed by simulations with Hydrolight and by the analysis of airborne Airborne Prism EXperiment (APEX) imagery. © 2012 Elsevier Inc.

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