Applicability analysis of comprehensive drought index based on GRACE data in ten major river basins in China

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2024-10-29 DOI:10.1016/j.jhydrol.2024.132275

Rong Wu , Zijun Wang , Chenfeng Cui , Yongxiang Li , Miao Tang , Jiangdong Chu , Renjie Xv , Chenrui Zhu , Shuo Wang , Yuli Li , Chengyuan Zhang , Zhannan Huang

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引用次数: 0

Abstract

As hydroclimatic extremes, drought triggered by climate change and human activities are recurrent over China. Selecting an appropriate comprehensive drought index is an important measure to comprehensively monitor drought characteristics. Precipitation and Terrestrial Water Storage Anomalies (TWSA) are important variables for assessing drought triggered by water deficiency in the atmosphere and terrestrial systems. The study aims to compare and discuss the applicability of drought index based solely on TWSA (DSI) and based on the combined effects of precipitation and TWSA (CCDI) in monitoring comprehensive drought in China. The results reveal that precipitation anomalies do not align with TWSA in arid basins, while they are synchronized in humid basins. CCDI reveals more favorable spatiotemporal agreement with the traditional drought indices, whereas DSI shows more consistency with common drought indices in humid basins. CCDI and DSI are suitable for assessing comprehensive drought in arid and humid basins, respectively. Moreover, almost both DSI and CCDI successfully monitored major drought periods in humid and arid basins during 2002–2006 and 2013–2017, respectively. Overall, this study highlights the applicability of CCDI and DSI in comprehensive drought assessment in arid and humid basins, respectively, providing valuable support for optimizing water resources utilization, management, and drought resistance decision-making.

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基于 GRACE 数据的综合干旱指数在中国十大流域的适用性分析

作为极端水文气候，气候变化和人类活动引发的干旱在中国反复出现。选择合适的综合干旱指数是全面监测干旱特征的重要措施。降水和陆地蓄水异常（TWSA）是评估大气和陆地系统缺水引发干旱的重要变量。本研究旨在比较和讨论单纯基于地面蓄水异常的干旱指数（DSI）和基于降水和地面蓄水异常综合效应的干旱指数（CCDI）在监测中国综合干旱中的适用性。结果表明，干旱盆地的降水异常与 TWSA 不一致，而潮湿盆地的降水异常与 TWSA 同步。CCDI 与传统干旱指数的时空一致性更好，而 DSI 在湿润盆地与常见干旱指数的一致性更好。CCDI 和 DSI 分别适用于干旱和湿润盆地的综合干旱评估。此外，DSI 和 CCDI 分别成功监测了 2002-2006 年和 2013-2017 年湿润盆地和干旱盆地的主要干旱期。总之，本研究强调了 CCDI 和 DSI 分别在干旱和湿润流域综合干旱评估中的适用性，为优化水资源利用、管理和抗旱决策提供了宝贵的支持。

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.