Estimation of relative phycoerythrin concentrations from hyperspectral underwater radiance measurements––A statistical approach

Estimation of relative phycoerythrin concentrations from hyperspectral underwater radiance measurements––A statistical approach
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通过高光谱水下辐射测量估算相对藻红蛋白浓度——统计方法

DOI:
10.1002/jgrc.20201
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发表时间:
2013
影响因子:
--
通讯作者:
A. Bracher
A. Bracher
中科院分区:
--
文献类型:
--
作者:
Taylor;M. H. Taylor;T. Dinter;A. Bracher

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藻胆蛋白是一类水溶性色素蛋白,作为辅助色素或触角色素发挥重要作用,并吸收叶绿素很少使用的光谱的绿色部分。藻红蛋白(PE)是四种类型的藻胆蛋白之一,通常根据其吸收特性进行区分。由于PE是水溶性的,它们通常不能用常规的颜料分析来捕获。在这里,我们提出了一个统计模型的基础上,在现场测量的三个跨大西洋巡航,使我们能够获得相对PE浓度从标准化的高光谱水下辐射测量(陆)。该模型依赖于Luspectra的经验正交函数(ERF)分析,以及随后的广义线性模型,其中测量的PE浓度作为响应变量,ERF负荷作为预测变量。该方法用于预测整个水柱的相对PE浓度,并根据这些配置文件计算综合PE估计。
Phycobiliproteins are a family of water‐soluble pigment proteins that play an important role as accessory or antenna pigments and absorb in the green part of the light spectrum poorly used by chlorophylla. The phycoerythrins (PEs) are one of four types of phycobiliproteins that are generally distinguished based on their absorption properties. As PEs are water soluble, they are generally not captured with conventional pigment analysis. Here we present a statistical model based on in situ measurements of three transatlantic cruises which allows us to derive relative PE concentration from standardized hyperspectral underwater radiance measurements (Lu). The model relies on Empirical Orthogonal Function (EOF) analysis ofLuspectra and, subsequently, a Generalized Linear Model with measured PE concentrations as the response variable and EOF loadings as predictor variables. The method is used to predict relative PE concentrations throughout the water column and to calculate integrated PE estimates based on those profiles.
藻红蛋白作为红藻化学分类学标记:一项调查
DOI: --
发表时间: 1982
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