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Abstract:

In this work we compare the annual component of sea level variations derived from 478 worldwide-distributed tide gauges with the annual component computed from a weekly gridded multi-mission altimeter product. Gridded altimetry data products allow for spatio-temporal analyses that are not possible based on along-track altimetry data. However, a precise validation is necessary in the coastal region before the gridded data can be used. Results of the comparisons show that root-mean-square differences (RMSD) between the two datasets are ≤2. cm for 76.4% of the sites. RMSD higher than 4. cm are caused by narrow coastal currents, nearby river outflows or other local phenomena. A methodology is proposed to assess the accuracy of the seasonal component of the gridded altimeter product in regions with a low density net of tide gauges. As a case study it is shown that the Southwestern Atlantic coast is a suitable region to study the spatio-temporal variability of the annual cycle of sea level since RMSD between annual altimetry data and in-situ data are lower than 2.1. cm. © 2014 Elsevier Ltd.

Registro:

Documento: Artículo
Título:A comparison of the annual cycle of sea level in coastal areas from gridded satellite altimetry and tide gauges
Autor:Ruiz Etcheverry, L.A.; Saraceno, M.; Piola, A.R.; Valladeau, G.; Möller, O.O.
Filiación:Departamento de Ciencias de la Atmósfera y los Océanos, Universidad de Buenos Aires, Buenos Aires, Argentina
Centro de Investigación del Mar y la Atmósfera, Buenos Aires, Argentina
Instituto Franco Argentino para el estudio del clima y sus impactos (UMI-IFAECI), Argentina
Departamento Oceanografía, Servicio de Hidrografía Naval, Argentina
Collecte Localisation Satellites (CLS), Toulouse, France
Instituto de Oceanografia, Universidade de Federal do Rio Grande, Rio Grande, Brazil
Palabras clave:Altimetry; Annual cycle; Coastal area; Sea level anomaly; Tide gauges; assessment method; coastal current; coastal zone; comparative study; satellite altimetry; satellite data; sea level change; tide gauge; Atlantic Ocean; Atlantic Ocean (Southwest)
Año:2015
Volumen:92
Página de inicio:87
Página de fin:97
DOI: http://dx.doi.org/10.1016/j.csr.2014.10.006
Título revista:Continental Shelf Research
Título revista abreviado:Cont. Shelf Res.
ISSN:02784343
CODEN:CSHRD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02784343_v92_n_p87_RuizEtcheverry

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Citas:

---------- APA ----------
Ruiz Etcheverry, L.A., Saraceno, M., Piola, A.R., Valladeau, G. & Möller, O.O. (2015) . A comparison of the annual cycle of sea level in coastal areas from gridded satellite altimetry and tide gauges. Continental Shelf Research, 92, 87-97.
http://dx.doi.org/10.1016/j.csr.2014.10.006
---------- CHICAGO ----------
Ruiz Etcheverry, L.A., Saraceno, M., Piola, A.R., Valladeau, G., Möller, O.O. "A comparison of the annual cycle of sea level in coastal areas from gridded satellite altimetry and tide gauges" . Continental Shelf Research 92 (2015) : 87-97.
http://dx.doi.org/10.1016/j.csr.2014.10.006
---------- MLA ----------
Ruiz Etcheverry, L.A., Saraceno, M., Piola, A.R., Valladeau, G., Möller, O.O. "A comparison of the annual cycle of sea level in coastal areas from gridded satellite altimetry and tide gauges" . Continental Shelf Research, vol. 92, 2015, pp. 87-97.
http://dx.doi.org/10.1016/j.csr.2014.10.006
---------- VANCOUVER ----------
Ruiz Etcheverry, L.A., Saraceno, M., Piola, A.R., Valladeau, G., Möller, O.O. A comparison of the annual cycle of sea level in coastal areas from gridded satellite altimetry and tide gauges. Cont. Shelf Res. 2015;92:87-97.
http://dx.doi.org/10.1016/j.csr.2014.10.006