Prof. Singh has specialized in land use and environmental studies, climate change, urban regional development, disaster management, remote sensing and GIS. He is now the Secretary General and Treasurer of the International Geographical Union, and served as IGU's vice president from 2012-2020. He is a member of The World Academy of Sciences (TWAS). He is also a scientific committee member of the International Science Council for Urban Health and Wellbeing. He chaired the Research Council at the Central Food Technological Research Institute, Mysore, one of India's Council of Scientific & Industrial Research Labs.

He is featured in Focus On: Disasters, an Asia Research News resource for journalists to find stories and sources.