Umesh Kulshrestha is a professor at the School of Environmental Sciences, Jawaharlal Nehru University, New Delhi. He is Deputy Director of South Asia Nitrogen Center. He has 22 years of experience in Environmental Sciences. His area of expertise includes aerosol and precipitation chemistry, climate change, air pollution, reactive nitrogen, air pollution chemistry and transport, atmospheric depositions and biogeochemical cycle, air pollution impact on plants etc. Prof. Kulshrestha is a recipient of the START Young Scientist Award by IGBP-START, USA, Thomas Kuhn Honor Pin by IUAPPA and International Academy of Sciences, CSIR Young Scientist Award, and MS Krishnan Gold Medal by the Indian Geophysical Union (IGU). Also, he is a Fellow of IGU. He has published a number of papers which have been widely cited. He has been associated with various international and national programmes on atmospheric science including Indian Ocean Experiment (INDOEX), Asian Brown Cloud (ABC), IGAC-DEBITS-CAD (Composition of Asian Deposition), Composition of Asian Aerosol and Precipitation (CAAP), Surya, ISRO-GBP-Integrated Campaign on Aerosol Radiation Budget (ICARB), etc.