1. Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore
2. NUS Environmental Research Institute, National University of Singapore, 1 Create way, Create Tower, #15-02, Singapore 138602, Singapore
3. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
4. Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, Shenzhen518055,China
5. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China