1. GFZ German Research Centre for Geosciences, Potsdam 14473, Germany.
2. Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin 12587, Germany.
3. Instituto de Astrofísica de Andalucía, Glorieta de la Astronomía s/n, Granada C.P. 18008, Spain.
4. Dept. Astrofísica y CC. de la Atmósfera, Universidad Complutense de Madrid, Madrid 28040, Spain.
5. Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309, USA.
6. Centre for Geography, Environment and Society, University of Exeter, Penryn TR10, UK.
7. National Oceanic and Atmospheric Administration, Boulder, CO 80305, USA.
8. Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9FE, UK.