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Model of phytoplankton absorption based on three size classes

机译:基于三种大小类别的浮游植物吸收模型

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Using the phytoplankton size-class model of Brewin et al. [Ecol. Model. 221, 1472 (2010)], the two-population absorption model of Sathyendranath et al. [Int. J. Remote. Sens. 22, 249 (2001)] and Devred et al. [J. Geophys. Res. 111, C03011 (2006)] is extended to three populations of phytoplankton, namely, picophytoplankton, nanophytoplankton, and microphytoplankton. The new model infers total and size-dependent phytoplankton absorption as a function of the total chlorophyll-a concentration. A main characteristic of the model is that all the parameters that describe it have biological or optical interpretation. The three-population model performs better than the two-population model at retrieving total phytoplankton absorption. Accounting for the contributions of picophytoplankton and nanophytoplankton, rather than the combination of both as in the two-population model, improved significantly the retrieval of phytoplankton absorption at low chlorophyll-a concentrations. Class-dependent specific absorption of phytoplankton derived using the model compares well with previously published models. However, the model presented in this paper provides the specific absorption of three size classes and is applicable to a continuum of chlorophyll-a concentrations. Absorption obtained from remotely sensed chlorophyll-a using our model compares well with in situ absorption measurements.
机译:使用Brewin等人的浮游植物大小分类模型。 [Ecol。模型。 221,1472(2010)],Sathyendranath等人的两种群吸收模型。 [Int。 J.远程。 Sens。22,249(2001)]和Devred等。 [J.地理学。 Res。 111,C03011(2006)]扩展到浮游植物的三个种群,即浮游植物,纳米浮游植物和微浮游植物。新模型推断出总浮游植物的吸收和大小依赖于浮游植物的吸收,作为总叶绿素-a浓度的函数。该模型的主要特征是,描述该模型的所有参数均具有生物学或光学解释。在检索总浮游植物吸收方面,三种群模型的性能优于两种群模型。考虑到浮游植物和纳米浮游植物的贡献,而不是像在两个种群模型中那样,两者的结合,显着改善了在低叶绿素-a浓度下浮游植物吸收的恢复。使用该模型得出的浮游植物的类依赖性比吸收率与以前发表的模型比较好。但是,本文提出的模型提供了三种大小类别的特定吸收,并且适用于连续的叶绿素a浓度。使用我们的模型从遥感叶绿素-a获得的吸收值与原位吸收测量值进行了比较。

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