Dupouy Cécile auteur aut IRD Savranski T. auteur aut IRD Lefèvre Jérôme auteur aut IRD Despinoy Marc auteur aut IRD Mangeas Morgan auteur aut IRD Fuchs Rosalie auteur aut IRD Faure Vincent auteur aut IRD Ouillon Sylvain auteur aut IRD Petit Michel auteur aut IRD text bookSection eng text/pdf born digital access We present data collected as part of VALidation HYperspectral of a BIOgeochemical model (ValHyBio), a PNTSsponsored program dedicated to chlorophyll satellite imaging and validation as affected by bathymetry in the South Western Tropical Lagoon of New Caledonia. The specific goals of ValHyBio are to: - examine time-dependent oceanic reflectance in relation to dynamic surface processes, - construct field/satellite reflectance-based chlorophyll models, - investigate the feasibility of inverting the model to yield surface chlorophyll and turbidity, and - validate the biogeochemical model with field/satellite observations. The in situ bio-optical parameters include absorption coefficients by CDOM and particles, Secchi disk depth, backscattering coefficient, pigment concentration, suspended matter concentration, and K_dPAR. They are measured every month at 5 stations, of contrasted bathymetry and bottom reflectance, as well as at a reference station situated 4 miles offshore, and at a station over coral reefs. Remote sensing reflectance is calculated from the absorption and backscattering coefficients and compared with satellite data. SeaWIFS and MODIS Aqua match-ups collected over the period 1997-2010 (ValHySat database) are used. Satellite retrievals are examined as a function of bathymetry and for the special case of Trichodesmium red tides. The feasibility of a long-term monitoring program of water optical properties with satellite remote sensing techniques is examined in the frame of the GOPS (South Pacific Integrated Observatory). specialized CYCLE BIOGEOCHIMIQUE CHLOROPHYLLE ABSORPTION REFLECTANCE TELEDETECTION DONNEES SATELLITE MODELE NOUVELLE CALEDONIE 126TELAPP05 032MILPHY Frouin R. ed. edt IRD Yoo H.R. ed. edt IRD Won J.S. ed. edt IRD Feng A. ed. edt IRD 7858 13 Bellingham SPIE 2010 SPIE Remote Sensing 2010, Toulouse (FRA), 2010/09/20-23 https://www.documentation.ird.fr/hor/fdi:010052111 10.1117/12.869888 [F B010052111] https://www.documentation.ird.fr/hor/fdi:010052111 https://www.documentation.ird.fr/intranet/publi/depot/2011-06-29/010052111.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2011-06-08 2024-10-28 fdi:010052111 fre