Eddy trains and striations in quasigeostrophic simulations and the ocean
This study explores the relationship between coherent eddies and zonally elongated striations. The investigation involves an analysis of two baroclinic quasigeostrophic models of a zonal and double-gyre flow and a set of altimetry sea level anomaly data in the North Pacific. Striations are defined b...
Published in: | Journal of Physical Oceanography |
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American Meteorological Society
2016
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ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/43792 2023-05-15T17:33:07+02:00 Eddy trains and striations in quasigeostrophic simulations and the ocean Chen, C Kamenkovich, I Berloff, P Natural Environment Research Council (NERC) 2016-07-07 http://hdl.handle.net/10044/1/43792 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000384024900013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 https://doi.org/10.1175/JPO-D-16-0066.1 English eng American Meteorological Society Journal of Physical Oceanography ?? 2016 American Meteorological Society 2825 2807 Science & Technology Physical Sciences Oceanography MULTIPLE ZONAL JETS DYNAMIC TOPOGRAPHY SPECTRAL-ANALYSIS NORTH-ATLANTIC EDDIES TRANSPORT MODEL 0405 Oceanography Journal Article 2016 ftimperialcol https://doi.org/10.1175/JPO-D-16-0066.1 2018-09-16T05:57:56Z This study explores the relationship between coherent eddies and zonally elongated striations. The investigation involves an analysis of two baroclinic quasigeostrophic models of a zonal and double-gyre flow and a set of altimetry sea level anomaly data in the North Pacific. Striations are defined by either spatiotemporal filtering or empirical orthogonal functions (EOFs), with both approaches leading to consistent results. Coherent eddies, identified here by the modified Okubo???Weiss parameter, tend to propagate along well-defined paths, thus forming ???eddy trains??? that coincide with striations. The striations and eddy trains tend to drift away from the intergyre boundary at the same speed in both the model and observations. The EOF analysis further confirms that these striations in model simulations and altimetry are not an artifact of temporal averaging of random, spatially uncorrelated vortices. This study suggests instead that eddies organize into eddy trains, which manifest themselves as striations in low-pass filtered data and EOF modes. Article in Journal/Newspaper North Atlantic Imperial College London: Spiral Pacific Journal of Physical Oceanography 46 9 2807 2825 |
institution |
Open Polar |
collection |
Imperial College London: Spiral |
op_collection_id |
ftimperialcol |
language |
English |
topic |
Science & Technology Physical Sciences Oceanography MULTIPLE ZONAL JETS DYNAMIC TOPOGRAPHY SPECTRAL-ANALYSIS NORTH-ATLANTIC EDDIES TRANSPORT MODEL 0405 Oceanography |
spellingShingle |
Science & Technology Physical Sciences Oceanography MULTIPLE ZONAL JETS DYNAMIC TOPOGRAPHY SPECTRAL-ANALYSIS NORTH-ATLANTIC EDDIES TRANSPORT MODEL 0405 Oceanography Chen, C Kamenkovich, I Berloff, P Eddy trains and striations in quasigeostrophic simulations and the ocean |
topic_facet |
Science & Technology Physical Sciences Oceanography MULTIPLE ZONAL JETS DYNAMIC TOPOGRAPHY SPECTRAL-ANALYSIS NORTH-ATLANTIC EDDIES TRANSPORT MODEL 0405 Oceanography |
description |
This study explores the relationship between coherent eddies and zonally elongated striations. The investigation involves an analysis of two baroclinic quasigeostrophic models of a zonal and double-gyre flow and a set of altimetry sea level anomaly data in the North Pacific. Striations are defined by either spatiotemporal filtering or empirical orthogonal functions (EOFs), with both approaches leading to consistent results. Coherent eddies, identified here by the modified Okubo???Weiss parameter, tend to propagate along well-defined paths, thus forming ???eddy trains??? that coincide with striations. The striations and eddy trains tend to drift away from the intergyre boundary at the same speed in both the model and observations. The EOF analysis further confirms that these striations in model simulations and altimetry are not an artifact of temporal averaging of random, spatially uncorrelated vortices. This study suggests instead that eddies organize into eddy trains, which manifest themselves as striations in low-pass filtered data and EOF modes. |
author2 |
Natural Environment Research Council (NERC) |
format |
Article in Journal/Newspaper |
author |
Chen, C Kamenkovich, I Berloff, P |
author_facet |
Chen, C Kamenkovich, I Berloff, P |
author_sort |
Chen, C |
title |
Eddy trains and striations in quasigeostrophic simulations and the ocean |
title_short |
Eddy trains and striations in quasigeostrophic simulations and the ocean |
title_full |
Eddy trains and striations in quasigeostrophic simulations and the ocean |
title_fullStr |
Eddy trains and striations in quasigeostrophic simulations and the ocean |
title_full_unstemmed |
Eddy trains and striations in quasigeostrophic simulations and the ocean |
title_sort |
eddy trains and striations in quasigeostrophic simulations and the ocean |
publisher |
American Meteorological Society |
publishDate |
2016 |
url |
http://hdl.handle.net/10044/1/43792 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000384024900013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 https://doi.org/10.1175/JPO-D-16-0066.1 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
2825 2807 |
op_relation |
Journal of Physical Oceanography |
op_rights |
?? 2016 American Meteorological Society |
op_doi |
https://doi.org/10.1175/JPO-D-16-0066.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
46 |
container_issue |
9 |
container_start_page |
2807 |
op_container_end_page |
2825 |
_version_ |
1766131511879270400 |