April 2016: ERS-2 mission reprocessing at CTOH for continental surfaces news
March 2016: A new release of X-TRACK products is available; check out the latest improvements in the news
2014 will be a major milestone with a new partnership between AVISO and CTOH; the major new feature will be its new website, AVISO+ which merges products from both data centers.
All details about upcoming changes are available in this document. As part of this merger, the user database will be updated and every user will be required to validate his subscription to the new site.
|Monitoring lake and river levels - HYDROWEB
||Coastal altimetry - X-TRACK
||Polar Ice Cap topography
||Global Surface Currents
Submesoscale filaments east of South America, for august 2006
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 :
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).
alongtrack GDR data with specific X-TRACK processing
surface currents (Geostrophic and Ekman) from 1999-2008
- submesoscale filaments (FSLE) available globally for the period 12/2000-04/2009
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).