Article (Scientific journals)
Assessment of Tide Gauge Biases and Precision by the Combination of Multiple Collocated Time Series
Gobron, Kevin; de Viron, Olivier; Woppelmann, Guy et al.
2019In Journal of Atmospheric and Oceanic Technology, 36, p. 1983–1996
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Keywords :
Tide gauge; Calibration; Uncertainty
Abstract :
[en] This study proposes a method for the cross calibration of tide gauges. Based on the combination of at least three collocated sea level time series, it takes advantage of the least squares variance component estimation (LS-VCE) method to assess both sea level biases and uncertainties in real conditions. The method was applied to a multi-instrument experiment carried out on Aix Island, France, in 2016. Six tide gauges were deployed to carry out simultaneous sea level recordings for 11 h. The best results were obtained with an electrical contact probe, which reaches a 3-mm uncertainty. The method allows us to assess both the biases and the precision—that is, the full accuracy—for each instrument. The results obtained with the proposed combination method have been compared to that of a buddy-checking method. It showed that the combination of all the time series also provides more precise bias estimates.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Gobron, Kevin ;  Université de Liège - ULiège > SPHERES
de Viron, Olivier
Woppelmann, Guy
Poirier, Etienne
Ballu, Valérie
Van Camp, Michel
Language :
English
Title :
Assessment of Tide Gauge Biases and Precision by the Combination of Multiple Collocated Time Series
Alternative titles :
[fr] Estimation des biais et incertitudes des marégraphes par la combinaison de séries temporelles colocalisées.
Publication date :
October 2019
Journal title :
Journal of Atmospheric and Oceanic Technology
ISSN :
0739-0572
eISSN :
1520-0426
Publisher :
American Meteorological Society, United States - Massachusetts
Volume :
36
Pages :
1983–1996
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CNES - Centre National d'Études Spatiales [FR]
Région Nouvelle-Aquitaine
DGA - Direction Générale de l'Armement [FR]
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since 04 October 2020

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