1. University of Oxford
2. North Carolina State University
3. Norwegian Meteorological Institute
4. Norwegian Meteorological Institute, Oslo, Norway
5. University of East Anglia
6. Universitat de València
7. Stockholm University
8. ETH Zurich
9. Universität Leipzig
10. Fraunhofer ITWM
11. University College London
12. Ecole Polytechnique Fédérale de Lausanne
13. University of Edinburgh