In order to characterize the weather conditions at ICOS atmosphere sites, ICOS requires monitoring of the following meteorological parameters: wind direction, wind speed, air temperature, relative humidity and barometric pressure. The corresponding ICOS meteorological sensor selection is based on the WMO recommendation specified in the WMO Guide N° 8 (Table 5) (WMO, 2008).1

Three meteorological stations will be installed on the ICOS tower measuring the required parameters at 10, 50 and 100m.