1. School of Geographical SciencesUniversity of Bristol Bristol UK
2. School of ChemistryUniversity of Bristol Bristol UK
3. Met Office, Hadley CentreJoint Centre for Hydrometeorological Research Wallingford UK
4. Centre for Ecology and Hydrology Wallingford UK
5. NASA Goddard Space Flight CenterBiospheric Sciences Laboratory Greenbelt MD USA
6. Department of Earth, Environmental and Geographic SciencesThe University of British Columbia, Okanagan Campus Kelowna British Columbia Canada