1. Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria
2. Atmospheric Physics Research Group, Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile-Ife, Nigeria
3. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing, China