HAPEX-Sahel was an international programme focused on the soil-plant-atmosphere energy, water and carbon balances in the West African Sahel. It was aimed at improving our understanding of the interaction between the Sahel and the general atmospheric circulation, providing a baseline for studies of climate change. It was carried out in West Niger during three to four years with an intensive observation period from August to October 1992. An interdisciplinary approach was adopted with contributed studies in hydrology and soil moisture, surface fluxes and vegetation, remote sensing science, and meteorology and mesoscale modelling. An information system has been established for data dissemination.
- remote sensing
- soil water balance