1. Associate Professor, Dept. of Civil Engineering, The Univ. of Louisiana at Lafayette, P.O. Box 42291, Lafayette, LA 70504-2291 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil Engineering, The Univ. of Louisiana at Lafayette, P.O. Box 42291, Lafayette, LA 70504-2291.
3. Research Associate Professor, Joint Center for Earth Systems Technology, Univ. of Maryland Baltimore County, Baltimore, MD 21250; and, NASA Goddard Space Flight Center, Greenbelt, MD 20771.
4. Project Scientist, Research Applications Laboratory, the National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000.