Altaf Arain is a Professor in the School of Geography and Earth Sciences at McMaster University and the founding Director of the McMaster Centre for Climate Change. Dr Arain holds a Bachelor’s degree in Civil Engineering, and a MSc and PhD in Hydrology at the University of Arizona. His research focuses on bio- and hydro-meteorology, hydrology, climatology, air pollution, land surface-atmosphere interactions, and climate modelling; with specific expertise in micrometeorological measurements and ecosystem modelling. He extensively studied forest ecosystems and their restoration using field measurements and ecosystem and hydrologic models. Dr Arain has established Turkey Point Observatory comprising 4 flux tower stations in Southern Ontario to examine the impacts of climate change and extreme weather events on different-age and different species forest ecosystems. Turkey Point Observatory is part of Global Water Futures (GWF), global Fluxnet, Canadian FloodNet and North American Carbon Programs. Dr Arain has been involved in the development of the coupled Canadian Land Surface Scheme and the Canadian Terrestrial Ecosystem Model (CLASS-CTEM), used in the Canadian Earth System Model (CanESM) for climate predictions. Dr Arain published over 70 refereed journal papers.