The french contribution to oceanographic observation for climate comes under the GOOS system (Global Ocean Observation System) and contains the following: voluntary and occasional observation ships, ocean gauges, floating and anchored weather buoys and, finally, sub-surface floaters (Coriolis Project). We would like to emphasise the pre-operational direction of ocean observation, with Mercator modelling projects, the Coriolis observation project and the future data assimilation experiment, GODAE (2002-2004). The seven french agencies involved in oceanography (CNES, CNRS, IFREMER, IFRTP, IRD, Météo-France and SHOM) are joining forces to develop a complete and coherent system of operational oceanography based on three focal points: satellite altimetry (JASON), global numerical modelling with assimilation (MERCATOR) and in situ measures (Coriolis). The Coriolis project aims to construct a pre-operational structure for acquiring, collecting, validating and distributing world ocean data (temperature, salinity and current profiles) responding to the needs of modellers (MERCATOR) and of the scientific community (under CLIVAR).
The Global Terrestrial Network (GTN) deals with observation of mountain glaciers, long-term monitoring of greenhouse gases (RAMCES) and, finally, measurements of carbon fluxes linked to terrestrial ecosystems (FLUXNET). Mountain glaciers are thus studied in numerous parts of France and abroad, in particular by LGGE, IRD and CEMAGREF. The RAMCES network aims to understand greenhouse gas cycles and to provide a regional balance. France is also actively participating in measuring carbon flows in terrestrial ecosystems carried out under the international programme Fluxnet, and the various programmes connected with the Carboeurope project group. Forest ecosystems have also been systematically observed by the National Forestry Inventory (IFN) every ten years for almost forty years. A mechanism for monitoring environmental influences was also put in place after the damage caused by acid rain.