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ESA's microsatellite playing major role in scientific studies

ESA's smallest Earth Observation satellite, Proba, is making big contributions to science with applications ranging from environmental monitoring, agriculture, forest , land use, crop forecasting, marine and coastal science as well as biological soil crusts and solid waste landfill monitoring.

Launched on 22 October 2001, Proba orbits 600 kilometres above the Earth and acquires around 450 scientific image datasets of more than 100 separate sites each year. Its main payload, the Compact High Resolution Imaging Spectrometer (CHRIS), is a highly configurable hyperspectral imager that sees down to a resolution of 17 metres and can acquire up to five images of a desired target at a time, each at a different angle with respect to Earth's surface, because Proba is manoeuvrable enough to perform controlled pitch and roll.

This unique instrument was highlighted at the 4th Proba/CHRIS workshop held at ESRIN, ESA's Earth Observation Centre in Frascati, Italy, from 19 to 21 September 2006, where some 60 researchers from around the world met to share current results and future plans, and have an input into future CHRIS acquisition planning.

The workshop heard how CHRIS images are being used to assess the effects of different land use strategies on vegetation types in the savannahs in Central Nambia, to evaluate aerosol retrieval in Hong Kong, to identify ancient Roman buildings, to help map and measure alpine snow cover in the Swiss National Park, to monitor waste landfill operations, and to study the role of woodland as both sinks and sources of carbon dioxide, among many others.

The themes of the workshop included CHRIS image processing and validation, land-surface processes and the atmosphere, and inland and coastal waters. In addition to hearing encouraging results presented on diverse sets of scientific and application studies, the workshop highlighted the need to continue the Proba mission until new hyperspectral missions become avail
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Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
22-Sep-2006


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