保定市暴雨天气气候特征分析

Analysis of Climatic Characteristics of Rainstorm Weather in Baoding City

选取保定国家基本气象站1981-2018年近38年降水观测资料,对保定市暴雨天气气候特征进行分析。结果表明,近38年保定市年平均暴雨日数为1.3 d,随时间变化呈略下降趋势,气候倾向率为-0.113 d/10年,暴雨最早出现在5月,最晚出现在9月,集中出现在7-8月,以7月最多;年平均大暴雨日为0.2 d,近38年大暴雨日数也趋于略减少;日极端最大降雨量平均为68.6 mm,近38年呈减少趋势,气候倾向率为-1.798 mm/10年。暴雨日数、极端降水量均趋于减少,说明保定市气候趋于暖干化发展,应加强生态保护积极应对气候变化。

The precipitation observation data of Baoding National Basic Meteorological Station from 1981 to 2018 were selected to analyze the climatic characteristics of rainstorm weather in Baoding City. The results showed that the average annual rainstorm days in recent 38 years were 1.3 days, which showed a slight downward trend with the change of time.The climatic tendency rate was-0.113 days/10 years. Rainstorms first appeared in May and last in September, concentrated in July-August, and most in July.The average annual rainstorm days were0.2 days, and the number of rainstorm days tended to decrease slightly in recent38 years.The average daily maximum rainfall was 68.6 mm, which had been decreasing in recent 38 years. The climatic tendency rate was-1.798 mm/10 years. Rainstorm days and extreme precipitation tended to decrease, which indicated that the climate of Baoding tended to be warm and dry, and ecological protection should be strengthened to actively respond to climate change.