Optimized classification reveals typical summer precipitation anomaly patterns and associated circulation features over the Yangtze-Huai river Valley
文献类型：期刊论文
| 作者 | Liang, Liaofeng1,4; Xia, Jun2; Chen, Juying3; Wang, Zhonggen1 |
| 刊名 | THEORETICAL AND APPLIED CLIMATOLOGY
 |
| 出版日期 | 2025-12-11 |
| 卷号 | 157期号:1页码:4 |
| ISSN号 | 0177-798X |
| DOI | 10.1007/s00704-025-05948-4 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Precipitation anomaly patterns (PAPs) in the Yangtze-Huai River Valley (YHRV) critically affect water resources, agricultural output, and the safety of hundreds of millions of people. Yet, their robust classification and associated atmospheric circulation features remain inadequately understood. This study develops an improved classification scheme to identify and characterize PAPs over the YHRV from 1951 to 2020. Based on precipitation data from 50 meteorological stations and ERA5 reanalysis, we identify nine distinct PAP types with high statistical reliability, with average pattern correlations ranging from 0.41 to 0.85 and average sign probabilities from 0.62 to 0.9 across types. The approach successfully identifies nine statistically robust and physically distinct PAPs, significantly improving upon conventional classifications by enhancing composite correlation for 78.7% of the years analyzed. The analysis reveals a distinct temporal shift, wherein the frequency of major drought patterns declined markedly from 15 cases (1951-1985) to 5 cases (1986-2020). Composite analysis uncovers the distinct atmospheric mechanisms governing these patterns: the extreme region-wide wet pattern (RWP) is characterized by a strong North Asian blocking high at upper levels, which facilitates a low-level cyclonic circulation that funnels moisture into YHRV. Conversely, region-wide dry (RWD) patterns are associated with a deep continental trough and a low-level anticyclone that effectively blocks moisture influx. By providing a physically coherent framework that links specific precipitation outcomes to large-scale circulation, these findings offer a refined basis for improving seasonal forecasting and developing more targeted strategies for disaster prevention in this vital region. |
| URL标识 | 查看原文 |
| WOS关键词 | EAST CHINA ; RAINFALL ; CLIMATE ; MONSOON ; VARIABILITY ; MOISTURE ; IMPACTS ; TESTS ; FLOOD |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001637741600002 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219447]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Wang, Zhonggen |
| 作者单位 | 1.Minist Emergency Management China, Natl Inst Nat Hazards, Beijing 100085, Peoples R China; 2.Wuhan Univ, State Key Lab Water Resources Engn & Management, Wuhan 430072, Peoples R China; 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liang, Liaofeng,Xia, Jun,Chen, Juying,et al. Optimized classification reveals typical summer precipitation anomaly patterns and associated circulation features over the Yangtze-Huai river Valley[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2025,157(1):4. |
| APA | Liang, Liaofeng,Xia, Jun,Chen, Juying,&Wang, Zhonggen.(2025).Optimized classification reveals typical summer precipitation anomaly patterns and associated circulation features over the Yangtze-Huai river Valley.THEORETICAL AND APPLIED CLIMATOLOGY,157(1),4. |
| MLA | Liang, Liaofeng,et al."Optimized classification reveals typical summer precipitation anomaly patterns and associated circulation features over the Yangtze-Huai river Valley".THEORETICAL AND APPLIED CLIMATOLOGY 157.1(2025):4. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。