Coherent Lagrangian swirls among submesoscale motions.
- Beron-Vera FJ Department of Atmospheric Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149.
- Hadjighasem A Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.
- Xia Q Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071 Shandong, China.
- Olascoaga MJ Department of Ocean Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149.
- Haller G Institute for Mechanical Systems, Swiss Federal Institute of Technology (ETH), 8092 Zurich, Switzerland georgehaller@ethz.ch.
- 2018-03-07
Published in:
- Proceedings of the National Academy of Sciences of the United States of America. - 2019
Lagrangian coherence
high-resolution ocean models
mesoscale eddies
satellite altimetry
submesoscale eddies
English
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.
- Language
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- English
- Open access status
- bronze
- Identifiers
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- DOI 10.1073/pnas.1701392115
- PMID 29507245
- Persistent URL
- https://sonar.ch/global/documents/199724
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