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X-TRACK-L2P: Sea Level Anomalies dedicated to coastal applications (2022 version)

Types of dataset: Altimeter Sea Level Anomalies dedicated to coastal applications at 1Hz

DOI10.24400/527896/a01-2022.020   -  more metadata

Contents: Along-track Sea Level Anomalies projected onto the reference tracks with a spatial interval of about 6-7 km between points (1 second). The Sea Level Anomaly time series have been computed with the X-TRACK processing system (developed at LEGOS) starting from the Level 2 Plus (L2P) products distributed by Aviso+. The altimetry corrections applied are those provided in this product. See the details of the L2P processing on the dedicated product page.

Use: coastal applications

Description: multimission altimeter satellite product in delayed time

Format: NetCDF


Geographic coverage: 27 zones have been defined as indicated on the map.

CitationThese products were developed, validated and distributed by CTOH/LEGOS France. Publications should include the following statement in the Acknowledgments: “Altimetry data used in this study (v2.1, DOI 10.24400/527896/a01-2022.020) were developed, validated by the CTOH/LEGOS, France and distributed by Aviso+”.

Update: The improvements compared to former version are summarized here.

Copyright : 1992- ongoing.


Satellite Version Type Authenticated access services
Data period
Topex/Jason-1/Jason-2/Jason-3 v2.1 along-track Please, connect to the
'product page' of 
and select the product
'Coastal X-TRACK SLA')
1993/02/28 (TP:cycle 17)  to 
2022/04/07 (J3:cycle 226)
Topex Interleaved orbit (TPN)/
Jason-1 Interleaved orbit (J1N)/
Jason-2 Interleaved orbit (J2N)
2002/09/20 (TP:cycle 369)  to
  2017/05/13 (J2:cycle 327)
1992/10/23 (E1:cycle 89)  to
2016/04/16 (SL:cycle 32)
Sentinel-3A 2016/03/12 (cycle 2) to
2023/01/26 (cycle 94)
Geosat Follow On 2000/01/08 (cycle 37) to 
2008/09/08 (cycle 222)
Haiyang-2A 2014/04/12 (cycle 67)  to 
2016/03/15 (cycle 119)

The version v2.0 is available on demand

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