Altered drought propagation under the influence of reservoir regulation

Xing, Zikang; Ma, Miaomiao; Zhang, Xuejun; Leng, Guoyong; Su, Zushang; Lv, Juan; Yu, Zhongbo; Yi, Peng

doi:10.1016/j.jhydrol.2021.127049

Cited by 25 publications

(14 citation statements)

References 26 publications

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“…Wang et al (2021) concluded that climate change accelerated meteorological drought to hydrological drought by 3 months, and human activities delayed transmission by 11-12 months. Xing et al (2021) concluded that under the influence of reservoir operation, the frequency of hydrological drought is significantly increased and the correlation between meteorological drought and hydrological drought decreases. Analyzing the propagation time from meteorological drought to hydrological drought is critical for forming a basis for establishing a hydrological drought early warning system.…”

Section: Introductionmentioning

confidence: 99%

The dynamic change of propagation from meteorological drought to hydrological drought at the basin scale: A case study from the Weihe River Basin, China

Zhao

Xie

Huang

2022

Front. Environ. Sci.

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Current climate change has led to frequent drought events in the Weihe River Basin, and the risks and impacts of drought are becoming increasingly severe. In order to study meteorological drought and hydrological drought at different scales and the propagation of drought between them, in this study, meteorological and hydrological drought conditions were calculated for 3-, 6-, 9-, and 12-month timescales based on 56 years of monthly precipitation and monthly runoff data of the Weihe River Basin using the Standardized Precipitation Index (SPI) and the Streamflow Drought Index (SDI), respectively. We explore analyzing the differences between them and their relationship and establishing regression equations based on the relationship and the dynamic propagation time of meteorological and hydrological droughts at different timescales. The results demonstrate that 1) the frequencies of both meteorological and hydrological droughts have shown an increasing trend in the last 56 years; 2) the relationship between meteorological drought and hydrological drought varied over time; 3) according to dynamic change analysis, propagation time tends to be shorter on the 3-month timescale and longer on the 6-month, 9-month, and 12-month timescales; and 4) the accelerated propagation time between meteorological drought and hydrological drought may be related to the increase in precipitation and temperature. The findings not only provide scientific support for the formulation of drought prevention and disaster reduction strategies in this basin but also have important scientific and practical application value.

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Section: Introductionmentioning

confidence: 99%

The dynamic change of propagation from meteorological drought to hydrological drought at the basin scale: A case study from the Weihe River Basin, China

Zhao

Xie

Huang

2022

Front. Environ. Sci.

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“…The PT was shortened and the linkage between droughts was strengthened in areas with more reservoirs and dams, such as in regions VII, VIII, and IX. However, because of the seasonal regulation of reservoirs (Xing et al, 2021) which was not considered in this study, the correlation coefficients with the PT and relationship were relatively low. Compared to HD, the regulation of dams and reservoirs had a relatively weak impact on AD.…”

Section: The Potential Causes Affecting Drought Propagationmentioning

confidence: 88%

The Impact of Climatic Conditions, Human Activities, and Catchment Characteristics on the Propagation From Meteorological to Agricultural and Hydrological Droughts in China

Cheng,

Xu,

Chen

et al. 2023

JGR Atmospheres

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Droughts are one of the most frequent and destructive natural disasters worldwide. In the past decades, drought events in China are frequent and caused severe socio‐economic losses. To better predict and manage droughts, the spatiotemporal characteristics of the three types of droughts and propagation time (PT) from meteorological to agricultural and hydrological droughts in China during 1982–2014 were analyzed based on drought indices, while the causes of drought propagation were discussed. The results showed that meteorological droughts exhibited an insignificant trend. Agricultural droughts mainly aggravated in the northeastern and central regions. And the hydrological droughts were long‐lasting and exacerbated in most areas. The propagation speed from meteorological to agricultural and hydrological droughts was extremely rapid (1–2 months) in southeast China, and the relationships among droughts were close (correlation coefficient/R > 0.6). The propagation from meteorological to hydrological droughts was slower (6–8 months) in central China. In northwest China, the association between meteorological and hydrological droughts was weak (R < 0.4). Climatic conditions (especially temperature) played a dominant role in the propagation from meteorological to agricultural and hydrological droughts, explaining 63.3% and 52.6% of the variations in the PT, respectively. Urbanization, agricultural activities, elevation, and vegetation contributed to the propagation from meteorological to agricultural droughts. Reservoirs, agricultural activities, and vegetation also affected the propagation from meteorological to hydrological droughts by regulating hydrological processes. These findings are of vital significance to the prediction, warning, and management of different droughts.

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“…Water storage in reservoirs during precipitation droughts might increase the likelihood of drought propagation, while water releases may decrease drought propagation likelihood. Influences of reservoir regulation on the temporal propagation of local drought characteristics have been detected in China (Xing et al., 2021; Yang et al., 2024), the United States (Tijdeman et al., 2018), and at a global scale (Fuentes et al., 2022). Brunner (2021) have shown that the effect of reservoirs on droughts is not limited to local characteristics and extends to spatial dependencies.…”

Section: Discussionmentioning

confidence: 99%

Drought Spatial Extent and Dependence Increase During Drought Propagation From the Atmosphere to the Hydrosphere

Brunner,

Chartier‐Rescan

2024

Geophysical Research Letters

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As droughts propagate both in time and space, their impacts increase because of changes in drought properties. Because temporal and spatial drought propagation are mostly studied separately, it is yet unknown how drought spatial extent and connectedness change as droughts propagate though the hydrological cycle from precipitation to streamflow and groundwater. Here, we use a large‐sample dataset of 70 catchments in Central Europe to study the propagation of local and spatial drought characteristics. We show that drought propagation leads to longer, later, and fewer droughts with larger spatial extents. 75% of the precipitation droughts propagate to P‐ET, among these 20% propagate further to streamflow and 10% to groundwater. Of the streamflow droughts, 40% propagate to groundwater. Drought extent and dependence increase during drought propagation along the drought propagation pathway from precipitation to streamflow thanks to synchronizing effects of the land‐surface but decreases again for groundwater because of sub‐surface heterogeneity.

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Altered drought propagation under the influence of reservoir regulation

Cited by 25 publications

References 26 publications

The dynamic change of propagation from meteorological drought to hydrological drought at the basin scale: A case study from the Weihe River Basin, China

The dynamic change of propagation from meteorological drought to hydrological drought at the basin scale: A case study from the Weihe River Basin, China

The Impact of Climatic Conditions, Human Activities, and Catchment Characteristics on the Propagation From Meteorological to Agricultural and Hydrological Droughts in China

Drought Spatial Extent and Dependence Increase During Drought Propagation From the Atmosphere to the Hydrosphere

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