Entrainment Rates and Eddy Exchange Coefficients From Reanalysis Sea Surface Salinity Data

Nathan Paldor; Ofer Shamir; Itamar Yacoby

doi:10.1029/2022MS003512

Entrainment Rates and Eddy Exchange Coefficients From Reanalysis Sea Surface Salinity Data

Nathan Paldor^*, Ofer Shamir, Itamar Yacoby

^*Corresponding author for this work

Fredy & Nadine Herrmann Institute of Earth Sciences

Research output: Contribution to journal › Article › peer-review

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 × 10⁴ m between the eddy exchange coefficient and the speed of advection in the Sea.

Original language	English
Article number	e2022MS003512
Journal	Journal of Advances in Modeling Earth Systems
Volume	15
Issue number	2
DOIs	https://doi.org/10.1029/2022MS003512
State	Published - Feb 2023

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Journal of Advances in Modeling Earth Systems published by Wiley Periodicals LLC on behalf of American Geophysical Union.

Keywords

Adriatic sea
eddy transport
Irminger Current
Knudsen relation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1029/2022MS003512

Cite this

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title = "Entrainment Rates and Eddy Exchange Coefficients From Reanalysis Sea Surface Salinity Data",

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 × 104 m between the eddy exchange coefficient and the speed of advection in the Sea.",

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doi = "10.1029/2022MS003512",

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N2 - 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 × 104 m between the eddy exchange coefficient and the speed of advection in the Sea.

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Entrainment Rates and Eddy Exchange Coefficients From Reanalysis Sea Surface Salinity Data

Abstract

Bibliographical note

Keywords

UN SDGs

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