1. Department of Geography, The Ohio State University, Columbus, OH 43210, USA
2. European Centre for Medium-range Weather Forecast, Shinfield, UK/Bologna, Italy/Bonn, Germany
3. NOAA Global Systems Laboratory, Boulder, CO 80305, USA
4. CASPO, Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA
5. Department of Earth & Environment, Florida International University, Miami, FL 33199, USA
6. National Institute for Space Research, Brazil
7. NOAA-CIRES Global Systems Laboratory, Boulder, CO 80305, USA
8. NOAA/NCEP Environmental Modeling Center, College Park, MD 20740, USA