1. Department of Environmental and Resource Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
2. Sino-Danish Center for Education and Research, Denmark
3. Swedish Meteorological and Hydrological Institute, Folkborgsvägen 17, SE-601 76, Norrköping, Sweden
4. National Institute of Aquatic Research, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark