Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic?
This work is a contribution to CSIC PTI Teledetect.-- 23 pages, 11 figures.-- Data Availability Statement: HYCOM reanalysis outputs (GLBu0.08/expt_19.1) analyzed in this study can be found at hycom.org/data/glbu0pt08/expt-19pt1
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American Geophysical Union
2022-01
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| Online Access: | http://hdl.handle.net/10261/263271 http://dx.doi.org/10.13039/501100002830 http://dx.doi.org/10.13039/501100001807 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003593 |
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This work is a contribution to CSIC PTI Teledetect.-- 23 pages, 11 figures.-- Data Availability Statement: HYCOM reanalysis outputs (GLBu0.08/expt_19.1) analyzed in this study can be found at hycom.org/data/glbu0pt08/expt-19pt1 |
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) |
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) Miracca-Lage, Mariana González-Haro, Cristina Campagnoli Napolitano, Dante Isern-Fontanet, Jordi Simionatto Polito, Paulo |
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Miracca-Lage, Mariana González-Haro, Cristina Campagnoli Napolitano, Dante Isern-Fontanet, Jordi Simionatto Polito, Paulo |
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Miracca-Lage, Mariana González-Haro, Cristina Campagnoli Napolitano, Dante Isern-Fontanet, Jordi Simionatto Polito, Paulo Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
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Miracca-Lage, Mariana |
| title |
Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
| title_short |
Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
| title_full |
Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
| title_fullStr |
Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
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Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? |
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can the surface quasi-geostrophic (sqg) theory explain upper ocean dynamics in the south atlantic? |
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American Geophysical Union |
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2022-01 |
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http://hdl.handle.net/10261/263271 http://dx.doi.org/10.13039/501100002830 http://dx.doi.org/10.13039/501100001807 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003593 |
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AT miraccalagemariana canthesurfacequasigeostrophicsqgtheoryexplainupperoceandynamicsinthesouthatlantic AT gonzalezharocristina canthesurfacequasigeostrophicsqgtheoryexplainupperoceandynamicsinthesouthatlantic AT campagnolinapolitanodante canthesurfacequasigeostrophicsqgtheoryexplainupperoceandynamicsinthesouthatlantic AT isernfontanetjordi canthesurfacequasigeostrophicsqgtheoryexplainupperoceandynamicsinthesouthatlantic AT simionattopolitopaulo canthesurfacequasigeostrophicsqgtheoryexplainupperoceandynamicsinthesouthatlantic |
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dig-icm-es-10261-2632712022-03-09T05:30:53Z Can the Surface Quasi-Geostrophic (SQG) Theory Explain Upper Ocean Dynamics in the South Atlantic? Miracca-Lage, Mariana González-Haro, Cristina Campagnoli Napolitano, Dante Isern-Fontanet, Jordi Simionatto Polito, Paulo Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) Fundação de Amparo à Pesquisa do Estado de São Paulo Ministerio de Ciencia, Innovación y Universidades (España) Agencia Estatal de Investigación (España) Centre National D'Etudes Spatiales (France) This work is a contribution to CSIC PTI Teledetect.-- 23 pages, 11 figures.-- Data Availability Statement: HYCOM reanalysis outputs (GLBu0.08/expt_19.1) analyzed in this study can be found at hycom.org/data/glbu0pt08/expt-19pt1 Satellite altimeters provide quasi-global measurements of sea surface height, and from those the vertically integrated geostrophic velocity can be directly estimated, but not its vertical structure. This study discusses whether the mesoscale (30–400 km) dynamics of three regions in the South Atlantic can be described by the surface quasi-geostrophic (SQG) theory, both at the surface and in depth, using outputs from an ocean general circulation model. At these scales, the model surface eddy kinetic energy (EKE) spectra show slopes close to k−5/3 (k−3) in winter (summer), characterizing the SQG and quasi-geostrophic (QG) turbulence regimes. We use surface density and temperature to (a) reconstruct the stream function under the SQG theory, (b) assess its capability of reproducing mesoscale motions, and (c) identify the main parameters that improve such reconstruction. For mixed layers shallower than 100 m, the changes in the mixed-layer depth contributes nine times more to the surface SQG reconstruction than the EKE, indicating the strong connection between the quality of the reconstruction and the seasonality of the mixed layer. To further explore the reconstruction vertical extension, we add the barotropic and first baroclinic QG modes to the surface solution. The SQG solutions reproduce the model density and geostrophic velocities in winter, whereas in summer, the interior QG modes prevail. Together, these solutions can improve surface correlations (>0.98) and can depict spatial patterns of mesoscale structures in both the horizontal and vertical domains. Improved spatial resolution from upcoming altimeter missions poses a motivating scenario to extend our findings into future observational studies We would like to acknowledge the financial support of Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPq (130215/2018-0) and Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP (2019/02968-9, 2019/13830-8, and 2017/09659-6). This work was supported in part by the Spanish R&D project L-BAND (ESP2017-89463-C3-1-R), which is funded by MCIN/AEI/10.13039/501100011033 and “ERDF A way of making Europe,” and project INTERACT (PID2020-114623RB-C31), which is funded by MCIN/AEI/10.13039/501100011033. We also acknowledge the financial support from the Spanish government through the “Severo Ochoa Centre of Excellence” accreditation (CEX2019-000928-S). [...] This work supports the SWOT-Brésil project, in preparation for the future SWOT wide-swath altimetry mission. SWOT-Brésil project is financed by CNES/INSU via the French TOSCA programme Peer reviewed 2022-03-08T10:57:40Z 2022-03-08T10:57:40Z 2022-01 artículo http://purl.org/coar/resource_type/c_6501 Journal of Geophysical Research - Part C - Oceans 127(2): e2021JC018001 (2022) CEX2019-000928-S http://hdl.handle.net/10261/263271 10.1029/2021JC018001 2169-9291 http://dx.doi.org/10.13039/501100002830 http://dx.doi.org/10.13039/501100001807 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003593 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-89463-C3-1-R/ES/SOBRE LA CONTINUIDAD DE LAS MISIONES SATELITALES DE BANDA L: NUEVOS PARADIGMAS EN PRODUCTOS Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-114623RB-C31/ES/ENFOQUES SINERGICOS PARA UNA NUEVA GENERACION DE PRODUCTOS Y APLICACIONES DE OBSERVACION DE LA TIERRA. PARTE CSIC/ Publisher's version https://doi.org/10.1029/2021JC018001 Sí open American Geophysical Union |