Title :
Influence of solar and sensor angles on chlorophyll estimation for geostationary ocean color imager
Author :
Lei, M. ; Minghelli-Roman, Audrey ; Mathieu, Sebastien ; Gouton, Pierre
Author_Institution :
LSIS, La Valette-du-Var, France
Abstract :
The impact of the solar and sensor angles on band-ratio chlorophyll concentration (Chl) estimation in Case 1 waters (open ocean) is analyzed in this work. The error range of Chl estimation due to angular variation is evaluated. The radiative transfer code Hydrolight is used for remote sensing reflectance simulation for 20 spectral bands. OC4v4 algorithm is used for Chl estimation. The results indicate that the error range of Chl estimation is between -41.91% and +46.15% when Chl range is from 0.0425 mg/m3 to 10.6685 mg/m3 and the solar and sensor zenith angles vary between 0 and 80°. This study provides a reference to determine the effective observation area of a future multispectral or hyperspectral geostationary ocean color sensor.
Keywords :
oceanographic techniques; remote sensing; underwater optics; Case 1 waters; Hydrolight code; angular variation; band-ratio chlorophy concentration estimation; geostationary ocean color imager; hyperspectral geostationary ocean color sensor; multispectral geostationary ocean color sensor; open ocean; radiative transfer code; remote sensing reflectance simulation; sensor zenith angle; solar zenith angle; Abstracts; Color; Estimation; Indexes; Reflectivity; Band-ratio algorithm; Chlorophyll; Geostationary remote sensing; Ocean color; Solar and sensor angles;
Conference_Titel :
Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2012 4th Workshop on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4799-3405-8
DOI :
10.1109/WHISPERS.2012.6874324
