GRACE-based hydrological droughts are less frequent but more severe than meteorological droughts in global major basins
文献类型：期刊论文
| 作者 | Ren, Chanyue1,2; Zhang, Xuanze1; Tian, Jing1; Li, Xiaojie1; Wang, Shijia1,2; Tang, Zixuan1,2; Wang, Xian1; Zhang, Yongqiang1 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2026 |
| 卷号 | 664页码:134582 |
| 关键词 | GRACE GRACE-FO Hydrological drought index Drought characteristics Climate change Drought propagation |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2025.134582 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Satellite observations from the Gravity Recovery and Climate Experiment and its follow-on mission (GRACE/-FO) enable an integrated monitoring of terrestrial water storage (TWS) dynamics, offering a novel perspective for hydrological drought assessment. Existing studies utilizing TWS data often rely on simplistic indices, limiting their diagnostic capability. To address this gap, we develop a Standardized Terrestrial Water Storage Index (STWSI) by optimizing probability distribution fitting across five parametric models (Beta, Johnson-SB, Gamma, Weibull, and Pearson III) for monthly TWS changes in 40 globally distributed major river basins. Results indicate that the Johnson-SB distribution provides the optimal fit for STWSI construction in 34 basins, outperforming traditional Gamma/Pearson III distributions used in meteorological drought indices (SPI/SPEI). Multi-scale comparisons (1- to 12-month) reveal significantly stronger correlations between STWSI and SPI/SPEI at longer timescales (R = 0.40-0.80 at 12 months) over global major basins. Crucially, STWSI detects hydrological droughts with lower frequency but longer duration and higher intensity than meteorological droughts across most basins, except for tropical basins (e.g., Amazon). At the moderate drought category and different time scales, the total basin area proportion detected by STWSI (44-54 %) is approximately twice that identified by meteorological indices (17-28 %). This divergence underscores the dominant control of long-term TWS depletion on hydrological drought genesis. Our findings establish STWSI as a transformative tool for monitoring composite hydrological droughts in a warming and changing climate. |
| URL标识 | 查看原文 |
| WOS关键词 | WATER STORAGE DEFICIT ; SATELLITE-OBSERVATIONS ; SEASONAL DROUGHT ; RIVER-BASIN ; INDEX ; GROUNDWATER ; RISK ; VARIABILITY ; INDICATORS ; SYSTEM |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001620613100002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219769]  |
| 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 | Zhang, Xuanze; Zhang, Yongqiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Chanyue,Zhang, Xuanze,Tian, Jing,et al. GRACE-based hydrological droughts are less frequent but more severe than meteorological droughts in global major basins[J]. JOURNAL OF HYDROLOGY,2026,664:134582. |
| APA | Ren, Chanyue.,Zhang, Xuanze.,Tian, Jing.,Li, Xiaojie.,Wang, Shijia.,...&Zhang, Yongqiang.(2026).GRACE-based hydrological droughts are less frequent but more severe than meteorological droughts in global major basins.JOURNAL OF HYDROLOGY,664,134582. |
| MLA | Ren, Chanyue,et al."GRACE-based hydrological droughts are less frequent but more severe than meteorological droughts in global major basins".JOURNAL OF HYDROLOGY 664(2026):134582. |
入库方式： OAI收割
来源：地理科学与资源研究所
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