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Coherent Lagrangian swirls among submesoscale motions.

ABSTRACT: The emergence of coherent Lagrangian swirls (CLSs) among submesoscale motions in the ocean is illustrated. This is done by applying recent nonlinear dynamics tools for Lagrangian coherence detection on a surface flow realization produced by a data-assimilative submesoscale-permitting ocean general circulation model simulation of the Gulf of Mexico. Both mesoscale and submesoscale CLSs are extracted. These extractions prove the relevance of coherent Lagrangian eddies detected in satellite-altimetry-based geostrophic flow data for the arguably more realistic ageostrophic multiscale flow.

SUBMITTER: Beron-Vera FJ

PROVIDER: S-EPMC6744856 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Coherent Lagrangian swirls among submesoscale motions.

Beron-Vera F J FJ Hadjighasem A A Xia Q Q Olascoaga M J MJ Haller G G

Proceedings of the National Academy of Sciences of the United States of America 20180305 37

The emergence of coherent Lagrangian swirls (CLSs) among submesoscale motions in the ocean is illustrated. This is done by applying recent nonlinear dynamics tools for Lagrangian coherence detection on a surface flow realization produced by a data-assimilative submesoscale-permitting ocean general circulation model simulation of the Gulf of Mexico. Both mesoscale and submesoscale CLSs are extracted. These extractions prove the relevance of coherent Lagrangian eddies detected in satellite-altimet ...[more]

PMID: 29507245

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