1. Distinguished Professor, Lancaster Environment Centre, Lancaster Univ., Lancaster LA1 4YQ, U.K.; Dept. of Earth Sciences, Uppsala Univ., Uppsala, Sweden; Professor Invité, ECHO, EPFL, Lausanne, Switzerland; and Visiting Professor, Laboratoire d'Ecohydrologie, Ecole Polytechnique Fédérale de Lausanne, Centre for Analysis of Time Series, London School of Economics, London (corresponding author).
2. Postdoctoral Research Fellow, Lancaster Environment Centre, Lancaster Univ., Lancaster LA1 4YQ, U.K.