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Analyzing the spatial and temporal characteristics of extreme precipitation and the response of wind speed before and after extreme precipitation are of great significance for extreme precipitation characterization, improving the understanding of the relationship between extreme precipitation and wind speed, as well as managing water-related disasters. This study defined event-based extreme precipitation by considering preceding and succeeding precipitation, and classified precipitation patterns into three types, i.e. early peak, later peak and bimodal types according to the locations of precipitation peak, after which the spatiotemporal distributions of extreme precipitation and its relationship with wind speed were analyzed. The results show that single-peak of extreme precipitation occurs more often than bimodal one, and the amount increases from northwest to southeast, with significant upward trend of extreme precipitation detected; Extreme daily precipitation threshold increases with higher wind speed over the southeast and northeast, contrary to the southwest; Moreover, wind speed tends to show anomalies before and after extreme daily precipitation, and it decreases when extreme daily precipitation occurs over the southwest; However, over other regions, it increases before extreme daily precipitation and decreases after then, reaching the peak at the extreme daily precipitation day.

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分析极端降水时空分布特征及前后期风速的响应变化,对掌握极端降水发生规律、提高极端降水-风速响应关系认识、预防及应对水灾害具有重要意义。定义考虑前后期降水的极端降水事件并根据雨峰位置划分为峰前、峰后和双峰3种雨型,分析我国极端降水事件时空分布特征及与风速的关系。结果表明,单峰雨型发生频次高于双峰雨型,量级从西北到东南逐渐递增,西北地区极端降水事件上升趋势明显;东南、东北地区风速越大,极端日降水阈值越高,西南地区则相反;极端日降水发生前后风速存在异常波动现象,西南地区表现为风速减弱,其他地区先增强后减弱、极端日降水当天风速最大。

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钱姝妮(1995-),女,硕士,研究方向为水文学及水资源,E-mail:

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2.武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉 430072, bio={"content":"

钱姝妮(1995-),女,硕士,研究方向为水文学及水资源,E-mail:

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钱姝妮(1995-),女,硕士,研究方向为水文学及水资源,E-mail:

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计及前后期降水的极端降水事件特征及与风速的响应规律
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钱姝妮 1, 2
水电能源科学 | 水文水资源与环境 2023,41(11): 5-9
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水电能源科学 | 水文水资源与环境 2023, 41(11): 5-9
计及前后期降水的极端降水事件特征及与风速的响应规律
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钱姝妮1, 2
作者信息
  • 1.广州市水务规划勘测设计研究院有限公司,广东 广州 510641
  • 2.武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉 430072
  • 钱姝妮(1995-),女,硕士,研究方向为水文学及水资源,E-mail:

Characteristics of Extreme Precipitation Events Taking into Account Pre and Post Precipitation and Their Response to Wind Speed
Shu-ni QIAN1, 2
Affiliations
  • 1.Guangzhou Water Planning Survey and Design Institute Co., LTD., Guangzhou 510641, China
  • 2.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
出版时间: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20221846
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分析极端降水时空分布特征及前后期风速的响应变化,对掌握极端降水发生规律、提高极端降水-风速响应关系认识、预防及应对水灾害具有重要意义。定义考虑前后期降水的极端降水事件并根据雨峰位置划分为峰前、峰后和双峰3种雨型,分析我国极端降水事件时空分布特征及与风速的关系。结果表明,单峰雨型发生频次高于双峰雨型,量级从西北到东南逐渐递增,西北地区极端降水事件上升趋势明显;东南、东北地区风速越大,极端日降水阈值越高,西南地区则相反;极端日降水发生前后风速存在异常波动现象,西南地区表现为风速减弱,其他地区先增强后减弱、极端日降水当天风速最大。

前后期  /  极端降水  /  时空分布  /  风速  /  响应

Analyzing the spatial and temporal characteristics of extreme precipitation and the response of wind speed before and after extreme precipitation are of great significance for extreme precipitation characterization, improving the understanding of the relationship between extreme precipitation and wind speed, as well as managing water-related disasters. This study defined event-based extreme precipitation by considering preceding and succeeding precipitation, and classified precipitation patterns into three types, i.e. early peak, later peak and bimodal types according to the locations of precipitation peak, after which the spatiotemporal distributions of extreme precipitation and its relationship with wind speed were analyzed. The results show that single-peak of extreme precipitation occurs more often than bimodal one, and the amount increases from northwest to southeast, with significant upward trend of extreme precipitation detected; Extreme daily precipitation threshold increases with higher wind speed over the southeast and northeast, contrary to the southwest; Moreover, wind speed tends to show anomalies before and after extreme daily precipitation, and it decreases when extreme daily precipitation occurs over the southwest; However, over other regions, it increases before extreme daily precipitation and decreases after then, reaching the peak at the extreme daily precipitation day.

preceding and succeeding period  /  extreme precipitation  /  spatiotemporal distribution  /  wind speed  /  response
钱姝妮. 计及前后期降水的极端降水事件特征及与风速的响应规律. 水电能源科学, 2023 , 41 (11) : 5 -9 . DOI: 10.20040/j.cnki.1000-7709.2023.20221846
Shu-ni QIAN. Characteristics of Extreme Precipitation Events Taking into Account Pre and Post Precipitation and Their Response to Wind Speed[J]. Water Resources and Power, 2023 , 41 (11) : 5 -9 . DOI: 10.20040/j.cnki.1000-7709.2023.20221846
  • 国家重点研发计划(2021YFC3001000)
  • 国家自然科学基金项目(52109019)
2023年第41卷第11期
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doi: 10.20040/j.cnki.1000-7709.2023.20221846
  • 接收时间:2022-09-05
  • 首发时间:2026-01-27
  • 出版时间:2023-11-25
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  • 收稿日期:2022-09-05
  • 修回日期:2023-03-13
基金
国家重点研发计划(2021YFC3001000)
国家自然科学基金项目(52109019)
作者信息
    1.广州市水务规划勘测设计研究院有限公司,广东 广州 510641
    2.武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉 430072
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2种不同金属材料的力学参数

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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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