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

Mean SLA (m) computed over Jan, Fev and Mar 2004 for ERS1+ERS2+ENV+SRL, GFO and TP+J1+J2+J3 time series in the Gulfstream region. The concerned missions are ENVISAT, GFO and Jason-2. Credits LEGOS/CNES.

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

DOI: 10.24400/527896/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

Tools:

User handbook
Example of python script to read the files and plot several types of figures
Reference: Birol, F., N. Fuller, F. Lyard, M. Cancet, F. Niño, C. Delebecque, S. Fleury, F. Toublanc, A. Melet, M. Saraceno, F. Léger, 2017. “Coastal Applications from Nadir Altimetry: Example of the X-TRACK Regional Products.” Advances in Space Research, 2017, 59 (4), p.936-953. doi:10.1016/j.asr.2016.11.005

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

Citation: These 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.

Delayed-time

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 MYAVISO+, 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)
ERS-1/ERS-2/ Envisat/SARAL/AltiKa				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

Data

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