1 Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
2 Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101, China.
3 Institute of Geography, Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany.
4 Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom.
5 Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721.
6 Department of History, Stockholm University, 106 91 Stockholm, Sweden.
7 Bolin Centre for Climate Research, Stockholm University, 106 91 Stockholm, Sweden.
8 Swedish Collegium for Advanced Study, 752 38 Uppsala, Sweden.
9 Department of Geography, Johannes Gutenberg University, 55099 Mainz, Germany.
10 Department of Geography, Justus-Liebig-University, D-35390 Giessen, Germany.
11 Department of Geography, University of Cambridge, CB2 3EN Cambridge, United Kingdom.
12 Dendrosciences Group, Swiss Federal Research Institute for Forest, Snow, and Landscape Research, CH-8903 Birmensdorf, Switzerland.
13 Czech Globe Global Change Research Institute, Czech Academy of Sciences, 60300 Brno, Czech Republic.
14 Department of Geography, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic.
15 Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada.
16 College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
17 Key Laboratory of Virtual Geographic Environment of Ministry of Education, School of Geography Science, Nanjing Normal University, Nanjing 210023, China.
18 State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
19 Science and Innovation Department, World Meteorological Organization, CH-1211 Geneva, Switzerland.
20 Tree Ring Laboratory, Lamont Doherty Earth Observatory of Columbia University, Palisades, NY 10964.
21 Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway.