1. International Research Institute for Climate and Society The Earth Institute at Columbia Univ. Palisades NY 10964
2. CSIRO Land and Water/APSRU GPO Box 1666 ACT 2601 Canberra Australia
3. Dep. of Environmental Sciences The Univ. of Technology Sydney P.O. Box 123, NSW 2007 Australia
4. Institute of Geographical Sciences and Natural Resource Research Chinese Academy of Sciences Beijing 100101 P.R. China