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1961—2018年长江中下游地区暴雨过程的客观识别及其变化特征
引用本文:高筱懿,赵俊虎,周杰,钱忠华,封国林. 1961—2018年长江中下游地区暴雨过程的客观识别及其变化特征[J]. 气候变化研究进展, 2021, 17(3): 329-339. DOI: 10.12006/j.issn.1673-1719.2020.090
作者姓名:高筱懿  赵俊虎  周杰  钱忠华  封国林
作者单位:扬州大学物理科学与技术学院,扬州 225000;国家气候中心 中国气象局气候研究开放实验室,北京 100081;重庆市气候中心,重庆 400000;扬州大学物理科学与技术学院,扬州 225000;国家气候中心 中国气象局气候研究开放实验室,北京 100081
基金项目:国家自然科学基金项目(41675050);国家自然科学基金项目(42075017);国家自然科学基金项目(41875093);国家自然科学基金项目(41530531);国家重点研发计划项目(2017YFC1502303)
摘    要:利用区域性极端事件客观识别方法(OITREE)和长江中下游地区381站逐日降水资料对1961—2018年长江中下游地区的暴雨过程进行了客观识别.共识别挑选出245次区域性暴雨过程.长江中下游地区暴雨过程持续时间以2~3 d为主,最长为8 d,累积强度主要集中于(2~4)×103 mm之间,累积面积主要集中于(2~5)×...

关 键 词:长江中下游地区  区域性暴雨过程  气候特征  客观识别
收稿时间:2020-04-24
修稿时间:2020-07-28

Objective identification and variation characteristics of regional heavy rainfall events in the middle and lower reaches of the Yangtze River from 1961 to 2018
GAO Xiao-Yi,ZHAO Jun-Hu,ZHOU Jie,QIAN Zhong-Hua,FENG Guo-Lin. Objective identification and variation characteristics of regional heavy rainfall events in the middle and lower reaches of the Yangtze River from 1961 to 2018[J]. Progressus Inquisitiones DE, 2021, 17(3): 329-339. DOI: 10.12006/j.issn.1673-1719.2020.090
Authors:GAO Xiao-Yi  ZHAO Jun-Hu  ZHOU Jie  QIAN Zhong-Hua  FENG Guo-Lin
Affiliation:1.School of Physical Science and Technology, Yangzhou University, Yangzhou 225000, China2 Laboratory of Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081, China3 Chongqing Climate Center, Chongqing 400000, China
Abstract:The regional heavy rainfall events (RHREs) are identified by using the Objective Identification Technique for Regional Extreme Events (OITREE) based on the daily precipitation data of 381 stations in the middle and lower reaches of the Yangtze River (MLYR) from 1961 to 2018. There are 245 RHREs in total in the MLYR. The duration of the RHREs in the MLYR is mainly 2 to 3 days, and the longest is 8 days. The cumulative intensity is mainly between (2-4) ×10 3 mm, and the cumulative area is about (2-5) × 10 5 km2. The RHREs in the MLYR mainly occur in summer, especially from June to July. Southeast Hubei, southern Anhui and Northern Jiangxi are the areas where the RHREs occur most frequently in the MLYR. The RHREs in the MLYR has both long-term trends and interdecadal changes. The frequency of occurrence has increased significantly in the past 58 years (0.3 times per decade). The frequency of RHREs and the five indicators all show obvious characteristics of interdecadal variability. From the 1960s to the late 1980s, the RHREs were relatively rare. It showed an increasing trend in the 1990s and reached a peak at the end of the period, after a sharp decline at the beginning of 21st century, there was a slow increase trend.
Keywords:Middle and lower reaches of the Yangtze River  The regional heavy rainfall events  Climatic characteristics  Objective identification  
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