OPAR facilities

Slideshow >>OPAR is a multi-site observatory (St Denis, Gillot, Maïdo, Le Port). Located at 2160m of altitude in the west part of the island, the Maïdo station is our main observing platform.

OPAR is operated by the OSU Reunion's technical and administrative team. Several laboratories from different places take part to the observatory's steering. Associated laboratory from Reunion island is the LACy.
With an instrumental park composed by more than 40 instruments, OPAR is providing unique observation datasets to several international atmospheric and climate data networks for research, atmosphere survey and satellite validation.

OPAR's platforms welcome scientist teams with or without their equipments from all over the world for short or long term measurements. Information about transnational access >>

OPAR live

Subset of our last data acquisitions for instrumental teams and public real time information on atmospheric conditions.

OPAR-MAIDO all sky camera

Near real time day or night all sky image over Maïdo station.

OPAR-MAIDO south east camera

Near real time day south east sky image from Maïdo station.

OPAR-MAIDO south west camera

Near real time day south west sky image from Maïdo station.

OPAR-MAIDO west camera

Near real time day west sky image from Maïdo station.

Web portals


  • University of La Réunion
  • CNRS


National web portals
  • National data and services centre for atmosphere (AERIS)
Specialized data portals from OPAR's international guests
  • IASB, Belgium - Infrared remote sensing web portal
Web portals of international supplied networks
  • Network for the Detection of Atmospheric Composition Change (NDACC)
  • Aerosol robotic network (AERONET)
  • Southern Hemisphere ADditional OZonesondes (SHADOZ)
  • World Wide Lightning Location Network (WWLLN)
  • Integrated Carbon Observation System (ICOS)
  • Aerosols, Clouds, and Trace gases Research Infrastructure Network (ACTRIS)
  • Global Atmosphere Watch (GAW)
  • GCOS Reference Upper-Air Network (GRUAN)


Understanding atmosphere and climate
Le climat de la Terre (CNRS) >>
Le climat en questions (IPSL, CNRS) >>