[1] Univ Copenhagen, Dept Agr & Ecol, DK-1870 Copenhagen, Denmark
[2] Univ Leeds, Inst Climate & Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England
[3] Univ Bonn, Inst Crop Sci & Resource Conservat, D-53115 Bonn, Germany
[4] Hadley Ctr, Exeter EX1 3PB, Devon, England
[5] ATSE Crawford Fund, Deakin, ACT 2600, Australia
[6] Scottish Crop Res Inst, Dundee DD2 5DA, Scotland
[7] Wageningen Univ, Plant Prod Syst Grp, NL-6708 PB Wageningen, Netherlands
[8] Univ Aarhus, Dept Agroecol & Environm, DK-8830 Tjele, Denmark
[9] Iowa State Univ, Dept Agron, Ames, IA 50011 USA
[10] NASA, Goddard Inst Space Studies, New York, NY 10025 USA
[11] Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland