Response of evapotranspiration to the 2022 unprecedented extreme drought in the Yangtze River Basin
文献类型：期刊论文
| 作者 | Zhang, Yu1,2; Liu, Xiaomang2; Wang, Kaiwen2; Bai, Peng2 |
| 刊名 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
 |
| 出版日期 | 2024-05-06 |
| 卷号 | N/A页码:13 |
| 关键词 | drought evapotranspiration extreme event in 2022 water balance Yangtze River Basin |
| ISSN号 | 0899-8418 |
| DOI | 10.1002/joc.8480 |
| 英文摘要 | The response of evapotranspiration (ET) to drought is essential for understanding water availability under drought conditions, which has received increasing scientific attention but remains highly uncertain. An unprecedented extreme drought sweeping the whole Yangtze River Basin during the summer and autumn of 2022 provides a novel opportunity to explore the ET response to drought within large river basins. Here, we apply multiple ET products to investigate the spatiotemporal variation of ET during the 2022 extreme drought and analyse the response of ET to drought in the Yangtze River Basin. The results show that this drought, characterized by widespread substantial precipitation deficit and high level of atmospheric evaporative demand (AED), leads to evident abnormal ET. Over the whole basin, ET exhibits a notable increase in the initial 2 months of this drought, which can significantly reduce water availability. However, despite continued high AED, the increase in ET fails to remain in the following months due to limited moisture supply. This suggests that ET response to drought varies as drought progresses. Among other drought events from 2003 to 2022, the response of ET is similar to that in the 2022 extreme drought. Specifically, for most sub-basins, ET typically shows positive anomalies in the early stage of drought, followed by negative anomalies in the late stage. Generally, our findings improve the understanding of the dynamic response of ET to drought at the basin scale, which is crucial for basin water security. During the 2022 unprecedented extreme drought in the Yangtze River Basin, evapotranspiration (ET) experienced a remarkable increase driven by high water demand initially, then a decline constrained by water supply. Among other drought events from 2003 to 2022, the response pattern of ET is similar to that in the 2022 extreme drought. image |
| WOS关键词 | GLOBAL LAND ; TERRESTRIAL EVAPORATION ; DATA ASSIMILATION ; WATER-BUDGET |
| 资助项目 | National Key Research and Development Program of China ; [2023YFC3206600] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001214703200001 |
| 出版者 | WILEY |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/204854]  |
| 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 | Liu, Xiaomang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yu,Liu, Xiaomang,Wang, Kaiwen,et al. Response of evapotranspiration to the 2022 unprecedented extreme drought in the Yangtze River Basin[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2024,N/A:13. |
| APA | Zhang, Yu,Liu, Xiaomang,Wang, Kaiwen,&Bai, Peng.(2024).Response of evapotranspiration to the 2022 unprecedented extreme drought in the Yangtze River Basin.INTERNATIONAL JOURNAL OF CLIMATOLOGY,N/A,13. |
| MLA | Zhang, Yu,et al."Response of evapotranspiration to the 2022 unprecedented extreme drought in the Yangtze River Basin".INTERNATIONAL JOURNAL OF CLIMATOLOGY N/A(2024):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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