1. Institute of Disaster Risk Management and Food security Studies, Bahir Dar University, Bahir Dar P.O. Box 5501, Ethiopia
2. Faculty of Civil and Water Resources Engineering, Bahir Dar University, Bahir Dar P.O. Box 400, Ethiopia
3. Global Centre for Clean Air Research (GCARE), School of Sustainability, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK