Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (lzujbky-2020-sp21)
National Natural Science Foundation of China (4187050043)
Novel Coronavirus Disease Science and Technology Major Project in Gansu Province
Received: 7 July 2020
Accepted: 9 October 2020
First Online: 21 October 2020
Ethics approval and consent to participate
: Not applicable. (The meteorological data were obtained and proved by Shanghai Meteorological Bureau with official permission, and other data were used in the study are publicly available.)
: Not applicable.
: The authors declare that they have no conflict of interest.