1. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Potsdam Germany
2. Institute for Geophysics and MeteorologyUniversity of Cologne Cologne Germany
3. Institute for MeteorologyUniversity of Leipzig Leipzig Germany
4. College of Global Change and Earth System ScienceBeijing Normal University Beijing China
5. Arctic CentreUniversity of Lapland Rovaniemi Finland
6. CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing China