1. Department of Geography and Environmental Engineering, The Johns Hopkins University, Baltimore, Maryland
2. Department of Meteorology, Stockholm University, Stockholm, Sweden
3. Meteorology and Air Quality Group, Wageningen University, Wageningen, Netherlands
4. Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland
5. School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland