Division of Engineering and Applied Sciences and Department of Earth and Planetary Sciences, Harvard University, Pierce Hall, 29 Oxford Street, Cambridge, MA 02138 United States
Board on Atmospheric Sciences and Climate, National Research Council, Keck 744, 500 Fifth Street, NW, Washington, DC 20001 United States
Scripps Institution of Oceanography and University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0221 United States