1. Electric Power Research Institute, Yunnan Power Grid Company Co., Ltd., Kunming 650217, China
2. State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China
3. University of Chinese Academy of Sciences (UCAS), Beijing 100049, China
4. Public Meteorological Service Center of China Meteorological Administration, Beijing 100081, China
5. College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China