Along-track altimetric GDR (Geophysical Data Record) products , geophysical and environmental corrections to apply. Available missions are: GFO, Topex/Poseidon, Envisat, Cryosat-2, Jason-1, Jason-2, Jason-3, Saral/AltiKa. Missions with several successive orbital types are treated in their entirety. Compared to the original version of the GDR files distributed by the CNES, ESA, NASA and ISRO agencies, the CTOH proposes new corrections and parameters in these files, which are to be applied to the initial altimetry measurement, according to user needs. Children metadata files are available for each mission.

Multimission altimetry-derived gridded from Ssalto/Duacs products backward-in-time Finite Size Lyapunov Exponents and Orientations of associated eigenvectors

The CTOH computes and distributes specific, coastal along-track sea level anomalies (SLA) using its X-TRACK processor over 23 regions, for all precise altimeter missions : Topex/Jason-1/Jason-2/Jason-3 (+Topex Interleaved orbit (TPN)/Jason-1 Interleaved orbit (J1N)), SARAL/AltiKa, Envisat, Geosat Follow On The CTOH computes and distributes specific, coastal along-track sea level anomalies (SLA) using its X-TRACK processor for all precise altimeter missions : Topex/Poseidon (TP), Jason-1 (J1) , Jason-1 interleaved (J1N), Topex/Poseidon interleaved (TPN), Jason-2, Geosat Follow on (GFO) and Envisat. X-TRACK cover today all the coastal oceans, with 23 new regions.

The CTOH computes and distributes specific, coastal along-track sea level anomalies (SLA) using its X-TRACK processor over 23 regions, for all precise altimeter missions : Topex/Jason-1/Jason-2/Jason-3 (+ Interleaved orbits for Topex, Jason-1, Jason-2), ERS-1, ERS2, Envisat, SARAL/AltiKa, Geosat Follow On, HaiYang-2A and Sentinel-3A. The Sea Level Anomaly time series have been computed with the X-TRACK processing system (developed at CTOH/LEGOS) but, unlike the previous version of the X-TRACK dataset, this X-TRACK L2P dataset is computed from the Level 2 Plus (L2P) products distributed by CDS-SAT-AVISO. The X-TRACK L2P product is also more complete since in addition to the sea surface height anomalies, it contains the significant wave height and the backscatter coefficient. The applied altimetry corrections are also provided in this product.

GDR L2 from CNES augmented by CTOH with new corrections or parameters. Different orbits are proposed: repetitive orbit: 2013/03/14-2016/07/04 geodetic orbit: 2016/07/04-now

Jason-3 GDR L2 version D from CNES/NASA augmented by CTOH with new corrections or parameters

Jason-1 GDR L2 version C from CNES/NASA augmented by CTOH with new corrections or parameters. Les 3 orbites de Jason-1 sont proposées: orbite de référence : 2002/01/15-2009/01/26 orbite interleaved: 2009/02/10-2012/03/03 orbite géodésique: 2012/05/07-2013/06/21

GDR L2 from ESA Baseline-C converted by CTOH into netCDF, splited by ascending/descending pass and augmented of recent corrections. Both successive orbits are proposed: Envisat V2.1: 2002/05/14-2010/10/21 Envisat V2.1 new orbit : 2010/10/26-2012/04/08

Jason-2 GDR L2 version D from CNES/NASA augmented by CTOH with new corrections or parameters. Both successive orbits are proposed: reference orbit: 2008/07/04-2016/10/02 orbit interleaved: 2016/10/13-2017/03/15