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\begin{document}

\title{A locally tuned Cphyto algorithm for the Ross Sea, Antarctica}



\author[1]{Meredith Grace Meyer}%
\author[2]{Walker O. Smith, Jr.}%
\affil[1]{University of North Carolina at Chapel Hill}%
\affil[2]{Shanghai Jiao Tong University}%


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  \date{May 27, 2024}


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\begin{abstract}
To improve current estimates of phytoplankton specific carbon in the
Ross Sea, we calculated a regionally specific algorithm from in situ
particulate organic carbon (POC) concentrations and backscatter sensor
data. These data come from three independent Seaglider deployments
during the austral summer. Algal-specific POC (Cphyto) accounted for
between 19.8-61.0\% of total POC in the Ross Sea with an average Cphyto
concentration of 84.2 \selectlanguage{greek}µ\selectlanguage{english}g C L-1. As a result, Cphyto:chlorophyll a ratios
were less than POC:chlorophyll a ratios and ranged from 9.00-257 \selectlanguage{greek}µ\selectlanguage{english}g C
(\selectlanguage{greek}µ\selectlanguage{english}g chlorophyll a) L-1. This regionally-specific method is substantially
more accurate (average Cphyto concentrations are 10-78 \selectlanguage{greek}µ\selectlanguage{english}g C L-1 greater)
than estimates derived from published algorithms. Our findings highlight
the value of regionally-specific algorithms for measuring inherent
optical properties and how such approaches can inform our current
understanding of particulate carbon partitioning and food web dynamics.%
\end{abstract}%



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\textbf{Hosted file}

\verb`982146_0_art_file_11686443_s5m992.docx`  available at \url{https://authorea.com/users/709334/articles/693709-a-locally-tuned-cphyto-algorithm-for-the-ross-sea-antarctica}

\textbf{Hosted file}

\verb`982146_0_supp_11686380_s5m6r8.docx`  available at \url{https://authorea.com/users/709334/articles/693709-a-locally-tuned-cphyto-algorithm-for-the-ross-sea-antarctica}

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