| 摘要 |
Based on the data of hourly precipitation in 11 national stations and 262 regional stations in Ulanqab City from 2017 to 2022, the annual, monthly and daily variations of short-term heavy precipitation in Ulanqab City were statistically analyzed. The results that the frequency of short-term heavy precipitation in Ulanqab City was high in the south and low in the north, and was closely related to the terrain. Short-term heavy precipitation in Ulanqab City was mainly concentrated from June to August, of which it was the frequentest in July. Short-term heavy precipitation mainly occurred from the afternoon to evening, and was concentrated from 13:00 to 20:00, especially at 19:00. The rainfall in Ulanqab City ranged mainly from 20 to 30 mm, accounting for 74.7%, and the rest accounted for 25.3%. |
