Duan, Jianping
Esper, Jan
Büntgen, Ulf
Li, Lun
Xoplaki, Elena
Zhang, Huan
Wang, Lily
Fang, Yongjie
Luterbacher, Jürg
Article History
Received: 4 April 2016
Accepted: 21 November 2016
First Online: 17 January 2017
Competing interests
: The authors declare no competing financial interests.