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Journal Articles Optics Express Year : 2014

Assessment of the colored dissolved organic matter in coastal waters from ocean color remote sensing

Abstract

Knowledge on absorption by colored dissolved organic matter, acdom, 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, Kd, and the absorption coefficient, has been developed to assess acdom. 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, Kd is not directly measured but estimated from the remote sensing reflectance, Rrs. Based on 109 satellite (SeaWiFS) and in situ coincident (i.e. match-up) data points acdom is retrieved with a MRAD value of 37%. This simple model generally presents slightly better performances than recently developed empirical or semi-analytical algorithms.

Domains

Oceanography
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Dates and versions

hal-01010236 , version 1 (16-12-2023)

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Hubert Loisel, Vincent Vantrepotte, David Dessailly, Xavier Meriaux. Assessment of the colored dissolved organic matter in coastal waters from ocean color remote sensing. Optics Express, 2014, 22 (11), pp.13109-13124. ⟨10.1364/OE.22.013109⟩. ⟨hal-01010236⟩
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