On May 12th, Tao Yang successfully defended his double PhD entitled Variation of Snow Resource and its Moisture Characteristics in the Tianshan Mountains (Central Asia). The seasonal snowpack in the Tianshan Mountains is a fundamental freshwater supply for Central-Asia. The dissertation aims to explore the snow resource variation and its driving forces in the Tianshan Mountains. For this Tao Yang was using remote sensing data analysis and region climate models coupled with land surface model simulation. The double PhD was granted by the University of the Chinese Academy of Science together with the Xinjiang Institute of Ecology and Geography (Chinese Academy of Science) on the one hand, and by Ghent University (UGent) on the other hand. At UGent he acquired the degree of Doctor of Sciences: Geography, at the Chinese side the degree of Doctor of Science: Cartography and Geographic Information. Supervisors of his research were at UGent prof. Philippe De Maeyer, prof. Piet Termonia and dr. Rafiq Hamdi; at XIEG prof. Xi Chen and prof. Lanhai Li.