1. Nelson Institute Center for Sustainability and the Global Environment, University of Wisconsin − Madison, Madison, Wisconsin 53726, United States
2. Department of Atmospheric and Oceanic Sciences, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
3. Department of Mechanical Engineering, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
4. American Council for an Energy-Efficient Economy, Washington, D.C. 20045, United States