Dynamics of dry-to-wet abrupt alternation events in mainland China from 1961 to 2022: A novel identification method integrating daily soil moisture and precipitation
文献类型：期刊论文
| 作者 | Liang, Liaofeng1,2; Xia, Jun2,4; Wang, Zhonggen1,3 |
| 刊名 | JOURNAL OF HYDROLOGY-REGIONAL STUDIES
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 60页码:102520 |
| 关键词 | Dry-to-wet abrupt alternation Precipitation Soil Moisture Atmospheric circulation Extreme event |
| DOI | 10.1016/j.ejrh.2025.102520 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Study region: This study focuses on mainland China, covering eight subregions. Study focus: Dry-to-wet abrupt alternation (DWAA) events have become increasingly frequent worldwide, causing significant socioeconomic and environmental impacts. Current DWAA research overemphasizes monthly precipitation while neglecting soil moisture integration, which reduces predictive accuracy in agricultural and monsoon regions where DWAA occur within a single month. This study addresses these gaps by developing a novel identification method combining daily soil moisture with precipitation data across mainland China (1961-2022). Using data from 2474 meteorological stations and ERA5 reanalysis, we investigated DWAA characteristics and atmospheric circulation patterns across different subregions. New hydrological insights for the region: Results reveal pronounced regional heterogeneity in DWAA distribution. Northern, Central, and Southern China experienced more frequent events, with Southern China showing the highest station average frequency (24.8 events). Northeastern, Northern China, and Eastern Arid regions displayed higher intensity values, while Southern and Southwestern regions exhibited longer durations. Temporal analysis showed distinct seasonal patterns, with summer DWAA events dominating (35.5 %), significantly exceeding winter (16.7 %) and spring (19.2 %). Atmospheric circulation analysis revealed significant tropospheric reconfigurations characterized by pronounced geopotential height changes at various pressure levels. Water vapor flux analysis identified moisture convergence zones along Southern China and the Yangtze River Basin, exhibiting significant positive anomalies of 0.006-0.012 kg/(m & sdot;s), establishing preferential corridors for moisture transport into water-deficient areas. |
| URL标识 | 查看原文 |
| WOS关键词 | YANGTZE-RIVER BASIN ; SUMMER MONSOON ; LOWER REACHES ; SPATIOTEMPORAL EVOLUTION ; DROUGHT ; MIDDLE ; VARIABILITY ; PRODUCTS ; EXTREMES ; IMPACTS |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001516861000004 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215378]  |
| 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.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 101400, Peoples R China 4.Wuhan Univ, State Key Lab Water Resources Engn & Management, Wuhan 430072, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liang, Liaofeng,Xia, Jun,Wang, Zhonggen. Dynamics of dry-to-wet abrupt alternation events in mainland China from 1961 to 2022: A novel identification method integrating daily soil moisture and precipitation[J]. JOURNAL OF HYDROLOGY-REGIONAL STUDIES,2025,60:102520. |
| APA | Liang, Liaofeng,Xia, Jun,&Wang, Zhonggen.(2025).Dynamics of dry-to-wet abrupt alternation events in mainland China from 1961 to 2022: A novel identification method integrating daily soil moisture and precipitation.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,60,102520. |
| MLA | Liang, Liaofeng,et al."Dynamics of dry-to-wet abrupt alternation events in mainland China from 1961 to 2022: A novel identification method integrating daily soil moisture and precipitation".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 60(2025):102520. |
入库方式： OAI收割
来源：地理科学与资源研究所
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