Clouds play a vital role in the Earth's energy budget and global hydrological cycle (Boucher et al., 2013;Garrett & Zhao, 2006;Shiogama & Ogura, 2014). On one hand, clouds as the carrier of water are an important part of the global hydrological cycle in the atmospheric circulation (Labraga et al., 2000). On the other hand, clouds can also affect the energy balance of the Earth system by changing radiation (Trenberth et al., 2009;Wild et al., 2013). Specifically, it not only reduces the solar radiation reaching the land surface by reflecting the shortwave solar radiation but also heats the Earth-atmosphere system through absorbing and emitting longwave radiation (Ockertbell & Hartmann, 1992;Zhao & Garrett, 2015). Cloud formation is a complex physical process that requires sufficient moisture, unstable atmospheric stratification, and cloud condensation nuclei (CCN) or ice nuclei (IN). Besides, cloud evolution is also governed by the balance of atmospheric dynamics, radiation, and microphysical processes (Boucher et al., 2013).