Clouds provide valuable information for weather prediction and climate studies, in particular for precipitation, atmospheric circulation and surface radiation.

Yet they remain intricate creatures, because of the complexity of their formation, structure and dynamics. Reuniwatt has developed innovative solutions to observe clouds from above and below.


Discover the sky from below

Observing clouds at night and getting their variability above a site is a challenge, whether it is for aviation, agriculture or meteorological purposes.

Reuniwatt developed and manufactures Sky InSight™, a unique thermal infrared sky imager for continuous and high-resolution observation of the atmosphere at a specific site, whose key features are:

  • 24/7 observation
  • Cloud fraction, cloud-base height and cloud optical depth
  • Cloud type classification
  • Rain and fog detection
  • Circumsolar detection
  • Local irradiance mapping

Sky InSight™ at NOAA’s Table Mountain facility in Boulder, Colorado, as part of the Cloud Properties Experiment (CPEX) in 2018.

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Discover the sky from above

Satellite-based data enable significant improvement in cloud cover evaluation and forecasting compared to numerical weather models.

Reuniwatt developed and operates SunSat™, its proprietary method for cloud cover retrieval from satellite images. Such a solution enables worldwide historical and real-time observations around the clock with a high temporal and spatial resolution, as well as forecasting. New applications can be imagined thanks to the simplified provision of the following cloud features through an extensive database:

  • Cloud fraction
  • Cloud type
  • Multilayer detection
  • Cloud-top features (altitude, pressure level, temperature)
  • Precipitating clouds
  • Cloud optical thickness
  • Cloud motion vector field
  • Cloud cover forecast

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