Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements

The study presents linear and nonlinear (smoothing spline) modeling of sea-level measurements on the basis of 50-year (1971-2020 A.D.) permanent service for mean sea-level (PSMSL) tide gauge data at the coastal area of the Gulf of Thailand. These tide gauge measurements are compared with the ORAS5 d...

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Main Authors: Kutubuddin Ansari, Jose Francisco De Oliveira-Junior, Punyawi Jamjareegulgarn
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9984164/
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author Kutubuddin Ansari
Jose Francisco De Oliveira-Junior
Punyawi Jamjareegulgarn
author_facet Kutubuddin Ansari
Jose Francisco De Oliveira-Junior
Punyawi Jamjareegulgarn
author_sort Kutubuddin Ansari
collection DOAJ
description The study presents linear and nonlinear (smoothing spline) modeling of sea-level measurements on the basis of 50-year (1971-2020 A.D.) permanent service for mean sea-level (PSMSL) tide gauge data at the coastal area of the Gulf of Thailand. These tide gauge measurements are compared with the ORAS5 data extracted from the latest ECMWF atmospheric reanalysis-ERA5. The comparative analyses showed that both kinds of data are correlated with a correlation coefficient of more than 0.94. Moreover, to examine the performance and the complexity of tide gauge measurements at each site, the multitaper spectral analysis is carried out and the spectral estimates are also estimated. Our spectral analyses showed that the sea-level measurements at each site have different levels of fluctuation because of individual local influence. The proposed multitaper spectral analysis can be considered as an appropriate method for tide gauge analysis and can be applied to attain the fluctuation of sea-level at the global level.
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spelling doaj.art-ffe021fe3f584ffa8bb0571829a5cc582022-12-22T00:01:03ZengIEEEIEEE Access2169-35362022-01-011013079513080510.1109/ACCESS.2022.32292129984164Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge MeasurementsKutubuddin Ansari0https://orcid.org/0000-0002-6151-6241Jose Francisco De Oliveira-Junior1https://orcid.org/0000-0002-6131-7605Punyawi Jamjareegulgarn2https://orcid.org/0000-0003-1259-1883Integrated Geoinformation (IntGeo) Solution Private Ltd., New Delhi, IndiaInstitute of Atmospheric Sciences (ICAT), Federal University of Alagoas (UFAL), Maceió, Alagoas, BrazilKing Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon CampusAlagoas, Chumphon, ThailandThe study presents linear and nonlinear (smoothing spline) modeling of sea-level measurements on the basis of 50-year (1971-2020 A.D.) permanent service for mean sea-level (PSMSL) tide gauge data at the coastal area of the Gulf of Thailand. These tide gauge measurements are compared with the ORAS5 data extracted from the latest ECMWF atmospheric reanalysis-ERA5. The comparative analyses showed that both kinds of data are correlated with a correlation coefficient of more than 0.94. Moreover, to examine the performance and the complexity of tide gauge measurements at each site, the multitaper spectral analysis is carried out and the spectral estimates are also estimated. Our spectral analyses showed that the sea-level measurements at each site have different levels of fluctuation because of individual local influence. The proposed multitaper spectral analysis can be considered as an appropriate method for tide gauge analysis and can be applied to attain the fluctuation of sea-level at the global level.https://ieeexplore.ieee.org/document/9984164/Gulf of ThailandPSMSLORAS5nonlinear modelingtile gauge measurement
spellingShingle Kutubuddin Ansari
Jose Francisco De Oliveira-Junior
Punyawi Jamjareegulgarn
Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
IEEE Access
Gulf of Thailand
PSMSL
ORAS5
nonlinear modeling
tile gauge measurement
title Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
title_full Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
title_fullStr Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
title_full_unstemmed Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
title_short Spatial Changes of Ocean Circulation Along the Coast of Gulf of Thailand Using Tide Gauge Measurements
title_sort spatial changes of ocean circulation along the coast of gulf of thailand using tide gauge measurements
topic Gulf of Thailand
PSMSL
ORAS5
nonlinear modeling
tile gauge measurement
url https://ieeexplore.ieee.org/document/9984164/
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