An improvement on the dust emission scheme in the global aerosol-climate model ECHAM5-HAM T. Cheng, Y. Peng, J. Feichter, and I. Tegen Max-Planck-Institute for Meteorology, Bundesstr. 53, 20146, Hamburg, Germany Leibniz-Institute for Tropospheric Research, Permoserstrasse 15, 04318 Leipzig, Germany Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China Ca...