Loisel Hubert auteur aut IRD Vantrepotte V. auteur aut IRD Dessailly D. auteur aut IRD Meriaux X. auteur aut IRD text journalArticle eng text/pdf born digital access Knowledge on absorption by colored dissolved organic matter, a(cdom), spatio-temporal variability in coastal areas is of fundamental importance in many field of researches related to biogeochemical cycles studies, coastal areas management, as well as land and water interactions in the coastal domain. A new method, based on the theoretical link between the vertical attenuation coefficient, K-d, and the absorption coefficient, has been developed to assess a(cdom). This method, confirmed from radiative transfer simulations and in situ measurements, and tested on an independent in situ data set (N = 126), allows acdom to be assessed with a Mean Relative Absolute Difference, MRAD, of 33% over two order of magnitude (from 0.01 to 1.16 m(-1)). In the frame of ocean color observation, K-d is not directly measured but estimated from the remote sensing reflectance, R-rs. Based on 109 satellite (SeaWiFS) and in situ coincident (i.e. match-up) data points a(cdom) is retrieved with a MRAD value of 37%. This simple model generally presents slightly better performances than recently developed empirical or semi-analytical algorithms. specialized EUROPE GUYANE FRANCAISE 126 032 021 22 11 13109-13124 2014 1094-4087 https://www.documentation.ird.fr/hor/fdi:010062288 10.1364/oe.22.013109 1094-4087 [F B010062288] https://www.documentation.ird.fr/hor/fdi:010062288 https://www.documentation.ird.fr/intranet/publi/2014/07/010062288.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-07-24 2017-08-23 fdi:010062288 fre