IOP Conference Series: Earth and Environmental Science PAPER • OPEN ACCESS Study on Happening and Extincting Mechanism of a Squall Line along the Eastern Helan Mountain To cite this article: Li Wei et al 2021 IOP Conf. Ser.: Earth Environ. Sci. 784 012023 View the article online for updates and enhancements. This content was downloaded from IP address 170.106.40.219 on 30/09/2021 at 20:51 International Energy, Environment and Water Resources Conference IOP Publishing IOP Conf. Series: Earth and Environmental Science 784 (2021) 012023 doi:10.1088/1755-1315/784/1/012023 Study on Happening and Extincting Mechanism of a Squall Line along the Eastern Helan Mountain Li Wei1, Hong Guoping*2, Mu Jianhua1, He Jia3, Yan Jun4, Zuo Hejiang5 1Ningxia Meteorological Disaster Prevention Technology Center, Yinchuan 750002, Ningxia, China 2Wuhan Regional Climate Center, Wuhan 430074, Hubei, China 3Shizuishan Meteorological Bureau, Shizuishan 753000, Ningxia, China 4Ningxia Meteorological Observatory, Yinchuan 750002, Ningxia, China 5Ningxia Climate Center, Yinchuan 750002, Ningxia, China *Corresponding author:
[email protected] Abstract. In the afternoon of June 17, 2020, a squall line occurred over the eastern region of Helan Mountain in Ningxia, accompanied by lightning, strong wind and short-term heavy precipitation, which affected north and middle part of Ningxia and Wuhai of Inner Mongolia. Basing on the Doppler radar data and conventional meteorological observation data, the weather process was analyzed. the results show that: (1) the cold air from