The RENOIR network (French network for tracing the isotopic composition of precipitations) is therefore a network dedicated to the long-term analysis of the isotopic composition of water molecules (δ18O and δ2H) in precipitations within France. RENOIR, designated by the French National Scientific Research Centre (Centre National de Recherche Scientifique [CNRS]) and the French National Institute of Sciences of the Universe (Institut National des Sciences de l’Univers [INSU]) as a National Observation Service (NOS) in 2019, constitutes the French component of the Global Network of Isotopes in Precipitation (GNIP) established by the International Atomic Energy Agency (IAEA) and the World Meteorological Organization (WMO).

RENOIR, labellisé en 2019 Service d’Observation National par le CNRS-INSU, constitue la composante française du réseau mondial GNIP AIEA/OMM.
Les objectifs du SNO RENOIR sont de (i) comprendre la réactivité des hydro- et éco- systèmes, et (ii) acquérir une fonction «Entrée» fiable et en continu de ces systèmes.

The objectives of the NOS RENOIR are to (i) understand the reactivity of hydrological systems and ecosystems, and (ii) to establish and monitor the basic principles of these systems. RENOIR is thus a national observatory of the isotopic composition of precipitations with the designated aim of:

• - federating,
• - normalising,
• - supporting,
• - and sharing the key data likely to be used by an extensive scientific community, including hydrologists, hydrogeologists, hydro-geochemists, environmentalists and other scientific experts.

You can consult the list of station directors at: https://sno-renoir.osups.universite-paris-saclay.fr/les-laboratoires/