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Title: Comparison of in situ and remotely-sensed (SeaWiFS) chlorophyll-a in the Northwest Atlantic
Authors: Fuentes-Yaco, César
Devred, Emmanuel
Sathyendranath, Shubha
Platt, Trevor
Payzant, Linda
Caverhill, Carla
Porter, Cathy
Maass, Heidi
White III, George N.
Keywords: Ocean colour;Remote sensing;SeaWiFS;Chlorophyll-a;Phytoplankton pigment;Northwestern Atlantic
Issue Date: Dec-2005
Publisher: CSIR
IPC Code: Int. Cl. ⁷ G01J 3/28, G06K 7/10
Abstract: Field measurements of phytoplankton pigment (chlorophyll-a) from the Northwest Atlantic are compared with concurrent pigment concentrations derived from SeaWiFS data using NASA/SeaDAS algorithms known as Ocean Chlorophyll 2 (OC2) and OC4 (versions 4.1 and 4.3). The results showed broad agreement but estimates using the NASA algorithms tended to show uncertainties, with lower than in situ values at concentrations greater than 1 mg chl-a m⁻³. Regionally -, and seasonally-, adapted empirical corrections are developed in an attempt to reduce the bias. The magnitude of errors was quantified using linear regression. Further progress will require application of a theoretical regional ocean-colour model.
Page(s): 341-355
ISSN: 0379-5136
Appears in Collections: IJMS Vol.34(4) [December 2005]

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