1. Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Karlsruhe Institute of Technology, Garmisch-Partenkirchen 82467, Germany.
2. School of GeoSciences, University of Edinburgh, Edinburgh EH8 9XP, UK.
3. UN Environment World Conservation Monitoring Centre (UNEP-WCMC), Cambridge CB3 0DL, UK.
4. UK Centre for Ecology and Hydrology, Lancaster, LA1 4AP, UK.
5. Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, UK.
6. RSPB Centre for Conservation Science, the Lodge, Sandy, Bedfordshire SG19 2DL, UK.