1. Department of Earth and Planetary Sciences, Jackson School of Geosciences, The University of Texas at Austin , Austin, TX 78712 , USA
2. Atmospheric Modelling Unit, Environmental Department, CIEMAT , 28040 Madrid , Spain
3. School of Environmental Sciences, University of Guelph , Guelph, ON N1G 2W1 , Canada
4. Maseeh Department of Civil, Architectural, and Environmental Engineering, Cockrell School of Engineering, The University of Texas at Austin , Austin, TX 78712 , USA