VELVET: measuring chamber for studying emissions of Biogenic Volatile Organic Compounds (BVOCs) by plant species in temperate and tropical climates.

The project by David Beilman (University of Hawaii at Manoa, Department of Geography & Environment) has been accepted by the ATMO ACCESS evaluation panel.

New EU Project IRISCC Launched to Empower Climate Change Resilience – La Réunion, Indian Ocean, France – April 4, 2024

Presentation of University Diplomas (DU) 2022-2023 / 2023-2024 “Beach erosion processes and coastline management strategies” at OSU-Réunion 

Atmospheric Mercury: A decade of observations on Amsterdam Island

Discover OSU-Reunion

Single OSU in the French overseas territories and active since 2010, OSU-Réunion was initially built on observations of the tropical atmosphere, before extending its observation services to marine and forest ecology, geology and hydrology.

What is an OSU?

The observatories of the sciences of the Universe (OSUs) are internal schools within universities, associated with INSU-CNRS (Institut National des Sciences de l’Univers). Each OSU is home to a Unité d’Appui et de Recherche (Research and Support Unit). The UAR, which has the same director as the OSU itself, is a structure to which technical staff and funding from the supervisory bodies (a university and one or more research organizations) can be assigned.

OSU-Reunion’s stations

Along Reunion’s coastline, the coastal station organizes observations of coastline geomorphology, marine ecology and ocean physics. It hosts the first overseas IR ILICO transverse site on the fringing reef.

The Observatoire de l’Erosion à la Réunion is a hydrological observatory focusing on surface and subsurface runoff conditions along the Rivière des Pluies watershed in northern Réunion.

The forestry station organizes observations of tropical forest ecosystems to understand the mechanisms of forest organization and the origins of biodiversity. It welcomes international students and researchers.

The Observatoire de Physique de l’Atmosphère in La Réunion is an observatory for tropical climate (greenhouse gases, reactive trace gases, aerosols, clouds), and a technical platform for international research.

Interactive map

  • OPAR


The GEOSUR catalog provides access to data sets produced by the OSU-Réunion scientific community and their links with international programs.

The research

The OMNCG (Observation des Milieux Naturels et des Changements Globaux - Observation of Natural Environments and Global Change) research federation promotes interdisciplinary research projects.






Training courses

The OSU-R supports the Masters programs of the UFR Sciences et Techniques and Sciences de l'Homme et l'Environnement in the field of the environment.