Funding for this research was provided by:
National Natural Science Foundation of China (61674025)
Open Projects of Sichuan Key Laboratory of Meteorological Information and Signal Processing (QXXCSYS201603)
Article History
Received: 26 September 2019
Accepted: 20 November 2019
First Online: 5 December 2019
Competing Interests
: The authors declare that they have no competing interests.