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\begin{document}

\title{Entrainment Rates and Eddy Exchange Coefficients from Reanalysis Sea
Surface Salinity Data}



\author[1]{Nathan Paldor}%
\author[2]{Ofer Shamir}%
\author[1]{Itamar Yacoby}%
\affil[1]{Hebrew University of Jerusalem}%
\affil[2]{New York University}%


\vspace{-1em}



  
  \date{May 18, 2024}


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\begin{abstract}
Simple analytic models developed in this study are applied to long-term
averages of reanalysis surface salinity data to quantify two fundamental
properties of ocean currents. The first model is based on the new
Freshening Length schema and its application to the Irminger Current
yields a ratio of about 5 between the turbulent entrainment rates of
surrounding fresher surface waters west and east of Greenland. The
second model is based on the steady solution of the advection-diffusion
equation subject to suitable boundary conditions. The application of
this model to the spreading of fresh, snow-melt, water from the delta of
the Po river in the northwest Adriatic Sea into the rest of the Sea
yields a ratio of \$8 \textbackslash{}times 10\^{}4\$ m between the eddy
exchange coefficient and the speed of advection in the Sea%
\end{abstract}%



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