1. School of Computer Science and Engineering, Xi’an University of Technology, Xi’an, China
2. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
3. Faculty of Electrical and Computer Engineering, University of Iceland, Reykjavik, Iceland
4. Department of Geography and Spatial Information Techniques, Ningbo University, Zhejiang, Ningbo, China
5. Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA