1. Data Management Department, WASCAL Competence Center, Ouagadougou, Burkina Faso
2. Department of Environmental Management, University of Energy and Natural Resources, Sunyani, Ghana
3. Building and Road Research Institute (BRRI), Council for Scientific and Industrial Research (CSIR), Kumasi, Ghana
4. Department of Geological and Atmospheric Sciences, Iowa State University, Ames, USA