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Article

Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements

1
Instituto Mediterráneo de Estudios Avanzados, C/Miquel Marquès, 21, 07190 Esporles, Spain
2
Collecte Localisation Satellites, Parc Technologique du Canal, 8-10 rue Hermès, 31520 Ramonville-Saint-Agne, France
3
Departament de Física, Universitat de les Illes Balears, Cra. de Valldemossa, km 7.5, 07122 Palma, Spain
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(23), 3970; https://doi.org/10.3390/rs12233970
Received: 26 October 2020 / Revised: 23 November 2020 / Accepted: 1 December 2020 / Published: 4 December 2020
(This article belongs to the Special Issue Calibration and Validation of Satellite Altimetry)
The quality of the Data Unification and Altimeter Combination System (DUACS) Sentinel-3A altimeter data in the coastal area of the European seas is investigated through a comparison with in situ tide gauge measurements. The comparison was also conducted using altimetry data from Jason-3 for inter-comparison purposes. We found that Sentinel-3A improved the root mean square differences (RMSD) by 13% with respect to the Jason-3 mission. In addition, the variance in the differences between the two datasets was reduced by 25%. To explain the improved capture of Sea Level Anomaly by Sentinel-3A in the coastal band, the impact of the measurement noise on the synthetic aperture radar altimeter, the distance to the coast, and Long Wave Error correction applied on altimetry data were checked. The results confirmed that the synthetic aperture radar altimeter instrument onboard the Sentinel-3A mission better solves the signal in the coastal band. Moreover, the Long Wave Error processing contributes to reduce the errors in altimetry, enhancing the consistency between the altimeter and in situ datasets. View Full-Text
Keywords: sea level; coastal zone; European seas; satellite altimetry; Sentinel-3A; tide gauges sea level; coastal zone; European seas; satellite altimetry; Sentinel-3A; tide gauges
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MDPI and ACS Style

Sánchez-Román, A.; Pascual, A.; Pujol, M.-I.; Taburet, G.; Marcos, M.; Faugère, Y. Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements. Remote Sens. 2020, 12, 3970. https://doi.org/10.3390/rs12233970

AMA Style

Sánchez-Román A, Pascual A, Pujol M-I, Taburet G, Marcos M, Faugère Y. Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements. Remote Sensing. 2020; 12(23):3970. https://doi.org/10.3390/rs12233970

Chicago/Turabian Style

Sánchez-Román, Antonio, Ananda Pascual, Marie-Isabelle Pujol, Guillaume Taburet, Marta Marcos, and Yannice Faugère. 2020. "Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements" Remote Sensing 12, no. 23: 3970. https://doi.org/10.3390/rs12233970

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