1. Department of Earth, Ocean, and Atmospheric Science Florida State University Tallahassee FL USA
2. Polar Science Center, Applied Physics Laboratory University of Washington Seattle WA USA
3. Department of Atmospheric Sciences University of Washington Seattle WA USA
4. Centre ESCER (Étude et la Simulation du Climat à l'Échelle Régionale) and GEOTOP (Research Center on the dynamics of the Earth System), Department of Earth and Atmospheric Sciences University of Quebec in Montreal Montreal Quebec Canada