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Variability in the chlorophyll‐specific absorption coefficients of natural phytoplankton: Analysis and parameterization

Bricaud, Annick, Babin, Marcel, Morel, André, Claustre, Hervé·1995·Journal of Geophysical Research: Oceans

Abstract

Variability in the chlorophyll (chl) a‐specific absorption coefficients of living phytoplankton aph*(λ) was analyzed using a data set including 815 spectra determined with the wet filter technique in different regions of the world ocean (covering the chlorophyll concentration range 0.02–25 mg m−3). The aph* values were observed to decrease rather regularly from oligotrophic to eutrophic waters, spanning over more than 1 order of magnitude (0.18 to 0.01 m 2 mg−1) at the blue absorption maximum. The observed covariation between aph*(λ) and the field chl a concentration (chl) can be explained considering (1) the level or pigment packaging and (2) the contribution of accessory pigments to absorption. Empirical relationships between aph*(λ) and 〈chl〉 were derived by least squares fitting to power functions. These relationships can be used to produce aph* spectra as a function of 〈chl〉. Such a simple parameterization, if confirmed with further data, can be used, e.g., for refining estimates of the carbon fixation rate at global or regional scales, such as those obtained by combining satellite pigment concentration maps with primary production models based on physiological parameters, among which aph* is an important one.

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Metadata

Authors
Bricaud, A., Babin, M., Morel, A., & Claustre, H.
Venue
Journal of Geophysical Research: Oceans
Published
1995-07-15
Volume
100
Issue
C7
Pages
13321-13332
ISSN
0148-0227 (ISSN-L)
OpenAlex
W2074468873
Cited by
1,118
References
0
FWCI
11.54
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Variability in the chlorophyll‐specific absorption coefficients of natural phytoplankton: Analysis and parameterization. https://app.cochat.ai/papers/10.1029/95jc00463
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Bricaud, A., Babin, M., Morel, A., & Claustre, H. (1995). Variability in the chlorophyll‐specific absorption coefficients of natural phytoplankton: Analysis and parameterization. Journal of Geophysical Research: Oceans. https://doi.org/10.1029/95jc00463

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