Characteristics and causes of low-temperature rainfall/snowfall and freezing weather event in eastern Guizhou and the middle and low reaches of the Yangtze River in early February 2024

• Published in: 暴雨灾害 Vol. 43; no. 4; pp. 395 - 406
• Main Authors: Xiaoling DU, Wei LAN, Dongpo He, Bo CHEN, Lu LU
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of Torrential Rain and Disasters 01.08.2024
• Subjects: dual-polarization radar; freezing disaster; guizhou; low-temperature rainfall/snowfall; temperature and humidity characteristics; the middle and lower reaches of the yangtze river
• ISSN: 2097-2164
• DOI: 10.12406/byzh.2024-100

In early February 2024, severe low-temperature rainfall/snowfall and freezing weather events occurred in the eastern parts of Guizhou and the middle and lower reaches of the Yangtze River. Coinciding with the travel period of the Spring Festival, the event caused serious impacts on travel, energy supply guarantees, and people's daily lives. To reveal the exceptional characteristics of the weather event, observation data from the National Meteorological Information Center, NCEP/NCAR reanalysis data, and Huaihua dual-polarization radar data were used to analyze the characteristics and causes of rainfall/snowfall and freezing weather events. The results are as follows: (1) Severe freezing disasters lasting 4-6 days occurred in eastern Guizhou, northern and central parts of Hunan, eastern and southern parts of Hubei, and northern and western parts of Anhui. These disasters were primarily caused by two rounds of low-temperature rain and snow weather. The first round occurred around February 1 to 4, with the most s