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.

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

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.

GDR L2 from US Navy augmented by CTOH with new corrections or parameters

Global climatology of near-inertial current characteristics from satellite-tracked drifters. Data analyzed: 8500 near-surface satellite-tracked drifter trajectories with drogues attached at 15 m depth. Gridded map with annual and seasonnal spans.

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

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-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

Retracking des formes d'ondes Topex (ocean, ice1, ice2, seaice) avec un processor Envisat, dans le cadre du projet CASH. CASH is a "Terre et Espace" project, funded by the french Ministry of Research to develop and promote new services using remote data, and involving industrial and scientific partners. This project aims at demonstrating how to use satellite altimetry to address the need of a global survey system of water resources. A consortium with all scientific, instrumental, and operational skills has been created, gathering: IRD/HyBAM, IRD/ESPACE, LEGOS/GOHS, CLS and BRLi.