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http://hdl.handle.net/10261/129737
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dc.contributor.author | Pallàs-Sanz, Enric | - |
dc.contributor.author | Viúdez, Álvaro | - |
dc.date.issued | 2005-10 | - |
dc.identifier | doi: 10.1175/JPO2784.1 | - |
dc.identifier | issn: 0022-3670 | - |
dc.identifier | e-issn: 1520-0485 | - |
dc.identifier.citation | Journal of Physical Oceanography 35(10): 1744-1762 (2005) | - |
dc.identifier.uri | 10261/129737 | - |
dc.description | 19 pages, 22 figures, 1 appendix | - |
dc.description.abstract | The mesoscale vertical velocity is obtained by solving a generalized omega equation (ω equation) using density and horizontal velocity data from three consecutive quasi-synoptic high-resolution surveys in the Alboran Sea. The Atlantic Jet (AJ) and the northern part of the Western Alboran Gyre (WAG) were observed as a large density anticyclonic front extending down to 200-230 m. The horizontal velocity uh in the AJ reached maxima of 1.2 m s-1 for the three surveys, with extreme Rossby numbers of ζ/f ≈ -0.9 in the WAG and +0.9 in the AJ (where ζ is the vertical vorticity and f is the Coriolis parameter). The generalized ω equation includes the ageostrophic horizontal flow. It is found that the most important >forcing> term in this equation is (fζph + ∇h e) · ∇h 2uh, where ζ ph is the horizontal (pseudo) vorticity and e is the buoyancy. This term is related to the horizontal advection of vertical vorticity by the vertical shear velocity, uhz · ∇hζ. Extreme values of the diagnosed vertical velocity w were located at 80-100 m with max[w] ⊂ [34, 45] and min{w} ⊂ [-64, -34] m day-1. Comparison with the quasigeostrophic (QG) ω equation shows that, because of the large Rossby numbers, non-QG terms are important. The differences between w and the QG vertical velocity are mainly related to the divergence of the ageostrophic part of the total Q vector (Qh ≡ ∇ huh · ∇h e) in the ω equation. © 2005 American Meteorological Society | - |
dc.publisher | American Meteorological Society | - |
dc.relation.isversionof | Publisher's version | - |
dc.rights | openAccess | - |
dc.title | Diagnosing Mesoscale Vertical Motion from Horizontal Velocity and Density Data | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1175/JPO2784.1 | - |
dc.relation.publisherversion | https://doi.org/10.1175/JPO2784.1 | - |
dc.date.updated | 2016-03-04T07:53:59Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.rights.license | https://www2.ametsoc.org/ams/index.cfm/publications/authors/journal-and-bams-authors/author-resources/copyright-information/copyright-policy/ | - |
dc.relation.csic | Sí | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.openairetype | artículo | - |
item.fulltext | With Fulltext | - |
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Pallas_et_al_2005.pdf | 2,77 MB | Adobe PDF | Visualizar/Abrir |
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