1. Department of Agriculture and Ecology, University of Copenhagen, 1870 Copenhagen, Denmark.
2. Institute for Climate and Atmospheric Science, University of Leeds, Leeds LS2 9JT, UK.
3. Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, D-53115 Bonn, Germany.
4. Hadley Centre, FitzRoy Road, Exeter EX1 3PB, UK.
5. ATSE Crawford Fund, One Geils Court, Deakin, 2600 ACT, Australia.
6. Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, Scotland, UK.
7. Plant Production Systems Group, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
8. Department of Agroecology and Environment, University of Aarhus, Blichers Allé, DK-8830 Tjele, Denmark.
9. Department of Agronomy, Iowa State University, 2101 Agronomy Hall, Ames, IA 50011–1010, USA.
10. NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA.
11. Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, Scotland, UK.