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Types of dataset: multimission simulation products.

Contents: SWOTsimulator along-track nadir and wide-swath altimeter SSH products with and without simulated noise content; reference ocean general circulation model (OGCM) simulation

DOI: 10.24400/527896/a01-2020.002   -  more metadata

Use: regional studies; ocean variability (mesoscale circulation), data challenge. For example, it will allow investigating the performance of mapping algorithms with recent and future altimeters constellation, and/or assessing the performances of altimetric missions not currently in orbit (like SWOT mission).

Condition of access: The 2020A_SSH_MAPPING_NATL60 products are available free of charge for any project or study.

Data access service: OpenDap

Citation: Publications should include the following statement in the Acknowledgments:
The data used in this study (DOI: 10.24400/527896/a01-2020.002) were developed, validated by CLS and MEOM Team from IGE (CNRS-UGA-IRD-G-INP), France and distributed by Aviso+”.

Description: Following the Observation System Simulation Experiment (OSSE) framework, the SSH observations include simulations of Topex-Poseidon, Jason 1, Geosat Follow On, Envisat, and SWOT altimeter data. There are along-track products for each mission and a gridded product extracted from a realistic high-resolution ocean simulation NATL60-CJM165 ([1], [2]). This processing step is carried out with the SWOTsimulator ([3], [4]).

Geographic coverage: Gulf Stream [65°W-55°W][33°N-43°N]

Format: NetCDF-4 Classic with CF standards.



[1] The reference simulation is the NATL60 simulation based on the NEMO model (Ajayi et al. 2020, DOI: 10.1029/2019JC015827). The simulation is run without tidal forcing.
[3] L. Gaultier, C. Ubelmann, and L.-L. Fu, “The challenge of using future SWOT data for oceanic field reconstruction,” J. Atmos. Ocean. Technol., vol. 33, pp. 119–126, Jan. 2016, DOI: 10.1175/JTECH-D-15-0160.1

Copyright : 2020 CLS - Cnes / ANR

SWOT data challenge NATL60 dataset

Authenticated access service Data period
Simulated Along-track Topex/Poseidon


Accessible via your personal MY AVISO+

Simulated Along-track Jason-1 2012/10/01-2013/09/29
Simulated Along-track Geosat Follow On 2012/10/01-2013/09/14
Simulated Along-track Envisat 2012/10/01-2013/09/30
Simulated Along-track SWOT 2012/10/02-2013/09/30
Reference simulation (NATL60-CJM165) Gridded 2012/10/02-2013/09/30
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