1. National Center for Atmospheric Research, Boulder, Colorado
2. NOAA/Earth System Research Laboratory, and Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado
3. Cold Regions Research and Engineering Laboratory, U.S. Army Corps of Engineers, Hanover, New Hampshire
4. NOAA/Earth System Research Laboratory, Boulder, Colorado
5. University Corporation for Atmospheric Research, Boulder, Colorado
6. I. M. Systems Group, Rockville, and NOAA/NWS/National Centers for Environmental Prediction, College Park, Maryland
7. NOAA/NWS/National Centers for Environmental Prediction, College Park, Maryland