Decomposition of in situ particulate absorption spectra

Chase, A, Boss, E, Zaneveld, R, Bricaud, A, Claustre, H, Ras, J, Dall’Olmo, G and Westberry, TK 2013 Decomposition of in situ particulate absorption spectra. Methods in Oceanography, 7. 110-124.

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A global dataset of in situ particulate absorption spectra has been decomposed into component functions representing absorption by phytoplankton pigments and non-algal particles. The magnitudes of component Gaussian functions, used to represent absorption by individual or groups of pigments, are well correlated with pigment concentrations determined using High Performance Liquid Chromatography. We are able to predict the presence of chlorophylls a,ba,b, and cc, as well as two different groups of summed carotenoid pigments with percent errors between 30% and 57%. Existing methods of analysis of particulate absorption spectra measured in situ provide for only chlorophyll aa; the method presented here, using high spectral resolution particulate absorption, shows the ability to obtain the concentrations of additional pigments, allowing for more detailed studies of phytoplankton ecology than currently possible with in-situ spectroscopy.

Item Type: Publication - Article
Subjects: Ecology and Environment
Marine Sciences
Divisions: Plymouth Marine Laboratory > Science Areas > Sea from Space (expired)
Depositing User: Giorgio Dall'Olmo
Date made live: 05 Aug 2014 13:50
Last Modified: 21 Feb 2018 12:15

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