Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia

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High-resolution 20-Hz Jason-2 satellite altimetry data obtained from crossing tracks numbered 52 and 189 in San Matias Gulf, Argentina, are compared with a 22-month-long time series of sea level measured by a bottom pressure recorder. It was deployed 1.3 km from the nominal intersection of the two t...

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Autores principales: Lago, L.S., Saraceno, M., Ruiz-Etcheverry, L.A., Passaro, M., Oreiro, F.A., Donofrio, E.E., Gonzalez, R.A.
Formato: JOUR
Materias:
Along-track
bottom pressure recorder (BPR)
coastal altimetry
Jason-2
macrotidal regime
Patagonia Argentine
San Matias Gulf (SMG)
satellite altimetry accuracy
sea level anomaly (SLA)
Aneroid altimeters
Coastal zones
Sea level
Surface waters
Bottom pressure recorders
Macrotidal
Patagonia
Satellite altimetry
Sea level anomaly
Geodetic satellites
amplitude
coastal zone
satellite altimetry
satellite data
satellite mission
sea level
sea surface height
Argentina
Atlantic Ocean
San Matias Gulf
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_19391404_v10_n8_p3493_Lago
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_19391404_v10_n8_p3493_Lago
record_format dspace
spelling todo:paper_19391404_v10_n8_p3493_Lago2023-10-03T16:36:44Z Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia Lago, L.S. Saraceno, M. Ruiz-Etcheverry, L.A. Passaro, M. Oreiro, F.A. Donofrio, E.E. Gonzalez, R.A. Along-track bottom pressure recorder (BPR) coastal altimetry Jason-2 macrotidal regime Patagonia Argentine San Matias Gulf (SMG) satellite altimetry accuracy sea level anomaly (SLA) Aneroid altimeters Coastal zones Sea level Surface waters Along-track Bottom pressure recorders coastal altimetry Jason-2 Macrotidal Patagonia San Matias Gulf (SMG) Satellite altimetry Sea level anomaly Geodetic satellites amplitude coastal zone satellite altimetry satellite data satellite mission sea level sea surface height Argentina Atlantic Ocean Patagonia San Matias Gulf High-resolution 20-Hz Jason-2 satellite altimetry data obtained from crossing tracks numbered 52 and 189 in San Matias Gulf, Argentina, are compared with a 22-month-long time series of sea level measured by a bottom pressure recorder. It was deployed 1.3 km from the nominal intersection of the two tracks and 0.9 km from the coast. Results show that by improving retracking and tidal modeling, satellite altimetry data become more accurate close to the coast. Indeed, a larger number of reliable data are obtained up to 1.6 km from the coast when satellite data are retracked using adaptive leading edge subwaveform retracker (ALES) rather than using the classic Brown model. The tidal model that showed the lowest root sum square (RSS) of the difference between the in situ and the modeled tidal amplitude and phase is TPXO8 (RSS 4.8 cm). Yet, the lowest difference from in situ tidal constituents is obtained by harmonic analysis of the available 23-year-long 1-Hz altimetry dataset (RSS 4.1 cm), highlighting the potential of altimetry data to compute tides. Considering ALES retracking and TPXO8 tidal correction for the 20-Hz Jason-2 data, we finally show that it is possible to retrieve 70% more data and to improve correlation with in situ measurements from 0.79 to 0.95. The sea level anomaly obtained this way has a root mean square difference from in situ data of only 13 cm as close as 4 km from the coast. Overall, the analysis performed indicates that satellite altimetry data can be greatly improved, even in complex macrotidal coastal regions. © 2008-2012 IEEE. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_19391404_v10_n8_p3493_Lago
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Along-track
bottom pressure recorder (BPR)
coastal altimetry
Jason-2
macrotidal regime
Patagonia Argentine
San Matias Gulf (SMG)
satellite altimetry accuracy
sea level anomaly (SLA)
Aneroid altimeters
Coastal zones
Sea level
Surface waters
Along-track
Bottom pressure recorders
coastal altimetry
Jason-2
Macrotidal
Patagonia
San Matias Gulf (SMG)
Satellite altimetry
Sea level anomaly
Geodetic satellites
amplitude
coastal zone
satellite altimetry
satellite data
satellite mission
sea level
sea surface height
Argentina
Atlantic Ocean
Patagonia
San Matias Gulf
spellingShingle Along-track
bottom pressure recorder (BPR)
coastal altimetry
Jason-2
macrotidal regime
Patagonia Argentine
San Matias Gulf (SMG)
satellite altimetry accuracy
sea level anomaly (SLA)
Aneroid altimeters
Coastal zones
Sea level
Surface waters
Along-track
Bottom pressure recorders
coastal altimetry
Jason-2
Macrotidal
Patagonia
San Matias Gulf (SMG)
Satellite altimetry
Sea level anomaly
Geodetic satellites
amplitude
coastal zone
satellite altimetry
satellite data
satellite mission
sea level
sea surface height
Argentina
Atlantic Ocean
Patagonia
San Matias Gulf
Lago, L.S.
Saraceno, M.
Ruiz-Etcheverry, L.A.
Passaro, M.
Oreiro, F.A.
Donofrio, E.E.
Gonzalez, R.A.
Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
topic_facet Along-track
bottom pressure recorder (BPR)
coastal altimetry
Jason-2
macrotidal regime
Patagonia Argentine
San Matias Gulf (SMG)
satellite altimetry accuracy
sea level anomaly (SLA)
Aneroid altimeters
Coastal zones
Sea level
Surface waters
Along-track
Bottom pressure recorders
coastal altimetry
Jason-2
Macrotidal
Patagonia
San Matias Gulf (SMG)
Satellite altimetry
Sea level anomaly
Geodetic satellites
amplitude
coastal zone
satellite altimetry
satellite data
satellite mission
sea level
sea surface height
Argentina
Atlantic Ocean
Patagonia
San Matias Gulf
description High-resolution 20-Hz Jason-2 satellite altimetry data obtained from crossing tracks numbered 52 and 189 in San Matias Gulf, Argentina, are compared with a 22-month-long time series of sea level measured by a bottom pressure recorder. It was deployed 1.3 km from the nominal intersection of the two tracks and 0.9 km from the coast. Results show that by improving retracking and tidal modeling, satellite altimetry data become more accurate close to the coast. Indeed, a larger number of reliable data are obtained up to 1.6 km from the coast when satellite data are retracked using adaptive leading edge subwaveform retracker (ALES) rather than using the classic Brown model. The tidal model that showed the lowest root sum square (RSS) of the difference between the in situ and the modeled tidal amplitude and phase is TPXO8 (RSS 4.8 cm). Yet, the lowest difference from in situ tidal constituents is obtained by harmonic analysis of the available 23-year-long 1-Hz altimetry dataset (RSS 4.1 cm), highlighting the potential of altimetry data to compute tides. Considering ALES retracking and TPXO8 tidal correction for the 20-Hz Jason-2 data, we finally show that it is possible to retrieve 70% more data and to improve correlation with in situ measurements from 0.79 to 0.95. The sea level anomaly obtained this way has a root mean square difference from in situ data of only 13 cm as close as 4 km from the coast. Overall, the analysis performed indicates that satellite altimetry data can be greatly improved, even in complex macrotidal coastal regions. © 2008-2012 IEEE.
format JOUR
author Lago, L.S.
Saraceno, M.
Ruiz-Etcheverry, L.A.
Passaro, M.
Oreiro, F.A.
Donofrio, E.E.
Gonzalez, R.A.
author_facet Lago, L.S.
Saraceno, M.
Ruiz-Etcheverry, L.A.
Passaro, M.
Oreiro, F.A.
Donofrio, E.E.
Gonzalez, R.A.
author_sort Lago, L.S.
title Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
title_short Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
title_full Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
title_fullStr Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
title_full_unstemmed Improved Sea Surface Height from Satellite Altimetry in Coastal Zones: A Case Study in Southern Patagonia
title_sort improved sea surface height from satellite altimetry in coastal zones: a case study in southern patagonia
url http://hdl.handle.net/20.500.12110/paper_19391404_v10_n8_p3493_Lago
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AT saracenom improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
AT ruizetcheverryla improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
AT passarom improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
AT oreirofa improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
AT donofrioee improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
AT gonzalezra improvedseasurfaceheightfromsatellitealtimetryincoastalzonesacasestudyinsouthernpatagonia
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