At the stations of Banizoumbou (Niger), Cinzana (Mali), and Bambey (Senegal), the wind speed and direction, air temperature, relative humidity are measured with Campbell® Scientific Instruments at 0.1 Hz. Wind speed and wind direction are measured with a 2DWindSonic, temperature and relative humidity using a 50Y or HMP50 probe located in a naturally ventilated 10-plate radiation shield, and precipitation amount with an ARG100 tipping bucket raingauge. The data acquisition is made using data loggers CR200. The meteorological data are recorded as 5 min averages (except for precipitation amount which is accumulated on past 5 min) and distributed as 1 hour averages (except for precipitation amount which is accumulated on past 1hour) (UTC).