Oceanic tides study
An accurate knowledge of ocean tides contribution is required for altimetry so as to eliminate tide contribution and access to oceanic signal associated with global oceanic circulation. Tide gauge data of WOCE Sea Level component allow to validate numerous tide models. Then FES94 hydrodynamic model developed in Grenoble (France) by the Christian Le Provost team […]
Validation of altimetric observations
Altimetry ocean topography measurement is a major component of international programs (GOOS, WOCE, CLIVAR, GLOSS, …) which explain the motivation for altimetric missions (Topex/Poseidon, ERS-1/2, JASON1, ENVISAT, …). Then, with these altimetric measurements, the in situ measurement is absolutely necessary: to provide time series, a point in space but continuous in time, so as to […]
Monitoring of Antarctic Circumpolar Current
A tide gauge global network is used to monitor the Antarctic Circumpolar Current, from the Drake passage to the Pacific mouth. The sea level variability is measured so as to contribute to the ACCLAIM (Antarctic Circumpolar Current Levels for Altimetry and Island Measurements)UK project. The french contribution is the ROSAME network : the Crozet-Kerguelen section […]
Monitoring of long term sea level trend
At the global scale, the mean sea elevation is about 1 to 2 mm/year. This estimation is based on the last century tide gauge analysis. With the global warming by greenhouse effect, we can estimate a mean sea level elevation of 50 cm during the following century. If we would like to detect this trend […]