1. European Centre for Medium-Range Weather Forecasts, Reading, and School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom;
2. Center for Western Weather and Water Extremes, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California;
3. NOAA/NWS/NCEP/Environmental Modeling Center, College Park, Maryland;
4. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom;
5. U.S. Naval Research Laboratory, Monterey, California;
6. National Center for Atmospheric Research, Boulder, Colorado;
7. Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, Colorado;
8. Department of Atmospheric and Environmental Science, University at Albany, State University of New York, Albany, New York;
9. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California