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Gridded and along-track Sea Level Heights and geostrophic currents - Antarctic

Types of dataset: Experimental Ssalto/Duacs gridded mono and multimission and along-track altimeter products dedicated to Antarctic. These datasets are one of the experimental products which are available on the SSALTO/DUACS experimental products

DOI10.24400/527896/a01-2022.010   -  more metadata

Contents: mono and multimission sea level heights computed with respect to a twenty-year mean and associated geostrophic current anomalies. The formal error is also included.

Condition of access : Users should keep in mind that these products are experimental products. Notably, they are not produced on an operational basis. 

Description: Sea level and geostrophic current anomalies grids for the Antarctic from radar altimeter measurements, available for 3 monomissions along-track and gridded files and 1 multimission file combining 3 satellites : SARAL/AltiKa, Cryosat-2 and Sentinel-3A.

Citation: When using the SSALTO/DUACS experimental products, please cite: "Those products were processed by SSALTO/DUACS (DOI: 10.24400/527896/a01-2022.010 version 2.0) and distributed by AVISO+ ( with support from CNES”

Geographic coverage: Antarctic.

Tools and references:

Copyright: 2013-2019 - Cnes/Cls.

Video: Southern ocean absolute dynamic topography maps from multimission satellite
altimetry. Particules are advected into the ocean currents and the black line denotes the 30%
threshold in sea ice concentration.

Delayed-time gridded SLA dedicated to Antarctic products

Satellite Area Version Type Authenticated access service Resolution Data period File weight
SARAL/AltiKa Antarctic 2.0 along-track (monomission) please refer to
and select the product 
"Ssalto/Duacs Experimental
products: along-track andn
gridded Sea Level Heights and velocities"
5Hz - 1km/
1 day
2013/03/14-2022/01/01 <160 Kb (1 file per day)
Cryosat-2 2012/12/21-2021/12/31 <320 Kb (1 file per day)
Sentinel-3A 2016/07/01-2021/06/30 <310 Kb (1 file per day)
SARAL/AltiKa gridded (monomission) 75 km/10 days (but 2
consecutive dates
are not independent
as a result of 30 days
2013/03/18-2022/07/09 188 Mb
Cryosat-2 2012/12/18-2021/12/21 179 Mb
Sentinel-3A 2016/06/30-2021/06/24 101 Mb
Merged gridded (multimission) 25 km/3 days, but 2
consecutive dates
are not independent
2013/01/02-2021/12/31     3.8 Mb (1 file per 3 days)
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