1. Centre for Ecology and Hydrology, Wallingford, United Kingdom
2. Centre for Ecology and Hydrology, Wallingford, United Kingdom, and VU University, Amsterdam, Netherlands
3. Met Office Hadley Centre for Climate Prediction and Research (Joint Centre for Hydro-Meteorological Research), Wallingford, United Kingdom
4. Centre for Ecology and Hydrology, Wallingford, United Kingdom, and Department of Hydrology and Water Resources, The University of Arizona, Tucson, Arizona