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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/tc-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: brief communication 18 May 2020

Submitted as: brief communication | 18 May 2020

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This preprint is currently under review for the journal TC.

Brief Communication: Mesoscale and submesoscale dynamics of marginal ice zone from sequential SAR observations

Igor E. Kozlov1, Evgeny V. Plotnikov1, and Georgy E. Manucharyan2 Igor E. Kozlov et al.
  • 1Remote Sensing department, Marine Hydrophysical Institute of RAS, Sevastopol, 299011, Russia
  • 2School of Oceanography, University of Washington, Seattle, 98195-7940, USA

Abstract. New possibility for horizontal current retrieval over marginal ice zone (MIZ) from sequential Sentinel-1 synthetic aperture radar (SAR) images is demonstrated. Daily overlapping SAR acquisitions made within 70–85° of latitude at time intervals < 1 hour enable obtaining high-resolution velocity field and resolve MIZ dynamics down to submesoscales. An example taken from the Fram Strait MIZ reveals energetic mesoscale and submesoscale eddies and filaments with horizontal velocities up to 0.75 m s−1, strong sea ice convergence and high vorticity values. Such observations are critical to monitor the current and future state of marginal ice zones in the polar oceans.

Igor E. Kozlov et al.

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Igor E. Kozlov et al.

Igor E. Kozlov et al.

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Latest update: 04 Jul 2020
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Short summary
Here we demonstrate a recently emerged opportunity to retrieve high-resolution surface current velocities from sequential spaceborne radar images taken over low-concentration ice regions of polar oceans. Such regularly available data uniquely resolves complex surface ocean dynamics even at small-scales, and can be used in operational applications to assess and predict transport and distribution of biogeochemical substances and pollutants in the ice-covered waters.
Here we demonstrate a recently emerged opportunity to retrieve high-resolution surface current...
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