Types of dataset: auxiliary products

Contents: Available on the period 01/02/1992 – 31/12/2022

DOI: 10.24400/527896/a01-2025.007 -  more metadata

Description: This product provides slope correction maps for Sentinel-6A SAR mode. These maps are derived from the approach originally developed for LRM mode by Sandwell and Smith (2014), adapted to reflect the geometry and orientation of SAR altimeter ground footprints. As the SAR altimeter has a rectangular ground footprint, the correction depends on the approach angle between the ground track direction and the orientation of the MSS gradients. Two correction maps are therefore included in this product: one for ascending tracks and one for descending tracks.

Citation: Please cite: "This product was produced by CLS as part of the DUACS project and distributed by AVISO+ with the support of CNES, (2025). Slope correction for Sentinel-6A SAR altimetry (Version 1.0) [Data set]. CNES. https://doi.org/10.24400/527896/A01-2025.007 "

Geographic coverage: global

Format: NetCDF

Condition of access: products delivered for any purposes as stated in the licence agreement. 

References: 

• User Manual
• Gamot, J., Pujol, M. I., Schaeffer, P., & Bignalet-Cazalet, F. (2025). Slope correction for ocean SAR altimetry. ESS Open Archive . February 18, 2025. https://doi.org/10.22541/essoar.173991386.64041762/v1
• Sandwell, David & Smith, Walter. (2014). Slope correction for ocean radar altimetry. Journal of Geodesy. 88. https://doi.org/10.1007/s00190-014-0720-1