Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/250314
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

High-Resolution Ocean Currents from Sea Surface Temperature Observations: The Catalan Sea (Western Mediterranean)

AutorIsern-Fontanet, Jordi CSIC ORCID ; García-Ladona, Emilio CSIC ORCID ; González-Haro, Cristina CSIC ORCID ; Turiel, Antonio CSIC ORCID ; Rosell Fieschi, Miquel CSIC ORCID; Company, Joan B. CSIC ORCID ; Padial Sayas, Antonio
Palabras claveSea surface temperature
Quasi-geostrophic equations
Mesoscale and submesoscale dynamics
Ocean velocity determination
Mediterranean Sea
Fecha de publicaciónsep-2021
EditorMultidisciplinary Digital Publishing Institute
CitaciónRemote Sensing 13(18): 3635 (2021)
ResumenCurrent observations of ocean currents are mainly based on altimetric measurements of Sea Surface Heights (SSH), however the characteristics of the present-day constellation of altimeters are only capable to retrieve surface currents at scales larger than 50–70 km. By contrast, infrared and visible radiometers reach spatial resolutions thirty times higher than altimeters under cloud-free conditions. During the last years, it has been shown how the Surface Quasi-Geostrophic (SQG) approximation is able to reconstruct surface currents from measured Sea Surface Temperature (SST), but it has not been yet used to retrieve velocities at scales shorter than those provided by altimeters. In this study, the velocity field of ocean structures with characteristic lengths between 10 and 20 km has been derived from infrared SST using the SQG approach and compared to the velocities derived from the trajectories of Lagrangian drifters. Results show that the SQG approach is able to reconstruct the direction of the velocity field with observed RMS errors between 8 and 15 degrees and linear correlations between 0.85 and 0.99. The reconstruction of the modulus of the velocity is more problematic due to two limitations of the SQG approach: the need to calibrate the level of energy and the ageostrophic contributions. If drifter trajectories are used to calibrate velocities and the analysis is restricted to small Rossby numbers, the RMS error in the range of 10 to 16 cm/s and linear correlations can be as high as 0.97
DescripciónSpecial issue Observing the Flow of Ocean Currents and Circulation Using Remote Sensing.-- 14 pages, 9 figures, 1 table.-- Data Availability Statement: Infrared images are available through the Insitut de Ciències del Mar (CSIC) at https://coo.icm.csic.es/site-page/satellite-data (accessed on 9 Septembre 2021)
Versión del editorhttps://doi.org/10.3390/rs13183635
URIhttp://hdl.handle.net/10261/250314
DOI10.3390/rs13183635
E-ISSN2072-4292
Aparece en las colecciones: (ICM) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
Isern_Fontanet_et_al_2021.pdf2,89 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

8
checked on 25-mar-2024

WEB OF SCIENCETM
Citations

6
checked on 29-feb-2024

Page view(s)

88
checked on 28-mar-2024

Download(s)

137
checked on 28-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


Este item está licenciado bajo una Licencia Creative Commons Creative Commons