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Welcome to the CTOH website, here you will find information about this team, its goals, its products, and the applications we work on.
| Monitoring lake and river levels - HYDROWEB |
Coastal altimetry - X-TRACK |
Polar Ice Cap topography |
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| SubMesoscale Filaments |
Global Surface Currents |
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 Submesoscale filaments east of South America, for august 2006
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The CTOH is a French Observation Service dedicated to satellite altimetry studies (Centre of Topography of the Oceans and the Hydrosphere) . The CTOH aims to help scientific users develop new altimetric products and applications.
Within this framework, the CTOH maintains homogeneous altimetric data bases for the long-term monitoring of sea level and ocean currents, lake and river levels, the cryosphère, and the planet's climate.
Scientific users can extract :
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alongtrack GDR data with up-to-date corrections, over oceans and continental surfaces, for different altimetric missions (Topex/Poseidon, Jason-1, Jason-2, GFO, ENVISAT).
- coastal
alongtrack GDR data with specific X-TRACK processing
- global
surface currents (Geostrophic and Ekman) from 1999-2008
- submesoscale filaments (FSLE) available globally for the period 12/2000-04/2009
The CTOH works in close collaboration with scientific research groups at LEGOS to develop new altimetric products, for monitoring lake and river levels (HYDROWEB), and over the cryosphere (OSCAR).
Established in 1989, the CTOH is an INSU Observational Service, supported by the Centre National de la Recherche Scientifique (CNRS), Centre National d'Etudes Spatiales (CNES), Observatoire Midi-Pyrénées (OMP), Pôle Océan-Altimétrie-Climat (CPER).
