1. College of Urban and Environmental Sciences; Sino-French Institute for Earth System Science; Key Laboratory for Earth Surface Processes of the Ministry of Education; Peking University; Beijing; 100871; China
2. Laboratoire des Sciences du Climat et de l'Environnement; CEA CNRS UVSQ; Gif sur Yvette; 91191; France
3. Department of Geography and Environment; Boston University; 675 Commonwealth Avenue; Boston; MA; 02215; USA