| 摘要 |
The annual average number of snowstorm days in Tongliao area is 1-3 d. Snowstorms mainly happen from October to next May, peaking from December to next March. The incidence is the highest between 12:00 and 15:00. The Mongolian low vortex is the main weather system that triggers snowstorms, and can be classified into three types: small trough development, horizontal trough becoming vertical, and low trough moving eastwards. Snowstorms pose a relatively serious threat to agricultural and animal husbandry production, transportation, power and communication in Tongliao. Especially in spring, snowstorm weather poses a greater threat to agriculture and animal husbandry in Tongliao. It is needed to pay attention to the impact of extreme weather and climate events such as snowstorms, strengthen research on the mechanisms of disaster-causing weather, enhance the early warning capability of disasters, and provide good service guarantees for low-temperature weather in winter. |
