Chlorophyll biomass in the global oceans: satellite retrieval using inherent optical properties

In the upper layer of the global ocean, 2082 in situ chlorophyll biomass values (Chl) are retrieved by concurrent satellite-derived inherent optical properties (IOP). It is found that (1) the phytoplankton absorption coefficient IOP alone does not provide satisfactory (Chl) retrieval; (2) the chromo...

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Bibliographic Details
Published in:Applied optics (2004) 2004-11, Vol.43 (31), p.5886
Main Authors: Lyon, Paul E, Hoge, Frank E, Wright, C Wayne, Swift, Robert N, Yungel, James K
Format: Article
Language:English
Subjects:
Algorithms
Biomass
Chlorophyll - analysis
Environmental Monitoring - methods
Oceans and Seas
Phytoplankton - isolation & purification
Phytoplankton - metabolism
Reproducibility of Results
Sensitivity and Specificity
Spacecraft
Spectrum Analysis - methods
Water Microbiology
Water Pollution - analysis
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Summary:In the upper layer of the global ocean, 2082 in situ chlorophyll biomass values (Chl) are retrieved by concurrent satellite-derived inherent optical properties (IOP). It is found that (1) the phytoplankton absorption coefficient IOP alone does not provide satisfactory (Chl) retrieval; (2) the chromophoric dissolved organic matter (CDOM) absorption coefficient IOP must also be used to obtain satisfactory retrieval through (Chl) alpha a ph + pa CDOM where p is a constant and a ph and aCDOM are, respectively, the phytoplankton and CDOM absorption coefficients; (3) the IOP-based (Chl) retrieval performance is comparable to standard satellite reflectance ratio retrievals (that have CDOM absorption intrinsically embedded within them); (4) inclusion of the total backscattering coefficient IOP does not contribute significantly to (Chl) retrieval; and (5) the new IOP-based algorithm may provide the possibility for future research to establish the actual role of extracellular CDOM from all sources in the intracellular production of chlorophyll biomass.
ISSN:1559-128X
DOI:10.1364/AO.43.005886