Our team is responsible for FTIR measurements in 1 location (St Denis, Ile de la Réunion), and participates in the measurements performed by ULg in the second location (Jungfraujoch, Switzerland). The third location (Uccle, Belgium) is used as a test site by our team. These three measurement sites are all part of the NDACC network.
Ile de la Réunion (21° S, 55° E):
Ile de la Réunion is an island situated in the Indian Ocean, near Madagascar, East from the African Continent, and is French territory. It is one of the very few NDACC stations at southern (sub)tropical latitudes.
Measurements have been performed at St Denis (50 m asl) and at the Maido site (2203 m asl).
This second site is not fully operational yet, but we have already organized a campaign there in 2002. The advantage of such a high altitude site, above the boundary layer, is a lesser degree of interfering humidity and pollution, which improves the quality of our measurements.
Since September 2009, our FTIR observations at Ile de la Reunion have been officially accepted as NDACC measurements. This means that the quality of the observations and of the derived geophysical data comply with the quality standard defined by the NDACC Infrared Working Group. Therefore, the data are submitted to the NDACC archive. See the NDACC website for more details.
Jungfraujoch (46.5°N, 8°E):
This station is situated in the Swiss Alps, at 3580 m above sea level. We collaborate there with the University of Liège (ULg). They are responsible for the FTIR instruments at Jungfraujoch.
The GIRPAS group from University of Liege has started the first measurements there in 1950! The very long time series help us to study the evolution of several compounds present in our atmosphere, and to analyse the impact of recent human activity. Visit the GIRPAS website for more information.
Test site: Uccle (50°N, 4°E):
Uccle is our home station where we test new instruments and tools, accessory material, home built suntracker and automatization systems like BARCOS.