Spatiotemporal Analysis of Soil Moisture Drought in the Horn of Africa DOI Creative Commons
Ahmed Abdiaziz Alasow, Mohammed Magdy Hamed, Mohammed Rady

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 16, 2024

Abstract Droughts continuously threaten human life, livestock, and agriculture across the Horn of Africa (HOA). As climate change exacerbates drought frequency severity, accurately quantifying spatiotemporal patterns is critical to developing evidence-based policies that mitigate impacts build resilience among vulnerable communities. This study conducted a analysis soil moisture over HOA, utilizing high-resolution ERA5 reanalysis data between 1951 2020. The Standardized Precipitation Evapotranspiration Index (SPEI) was calculated at 3-, 6-, 9-, 12-month timescales identify historical events assess duration intensity changes 70 years. Spatial revealed decreasing levels with most substantial reductions 45% occurring in Djibouti Northern Somalia. Comparisons baseline period (1951-1985) recent (1986-2020) showed increasingly negative SPEI intensities, indicating shift towards drier conditions, especially Somalia, Kenya, Ethiopia. results also pointed rising frequencies moderate droughts by around 15% severe 5-10% from 1986 2020 period. findings can inform policy improve regional monitoring systems development climate-resilient strategies, water resource management, disaster risk reduction planning protect lives food security.

Language: Английский

Drought propagation under global warming: Characteristics, approaches, processes, and controlling factors DOI
Xuan Zhang, Zengchao Hao, Vijay P. Singh

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 838, P. 156021 - 156021

Published: May 16, 2022

Language: Английский

Citations

289
Drought impacts on hydrology and water quality under climate change DOI

Jiali Qiu,

Zhenyao Shen, Hui Xie

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 858, P. 159854 - 159854

Published: Oct. 30, 2022

Language: Английский

Citations

78
From meteorological to agricultural drought: Propagation time and probabilistic linkages DOI Creative Commons
Zhengguang Xu, Zhiyong Wu, Quanxi Shao

et al.

Journal of Hydrology Regional Studies, Journal Year: 2023, Volume and Issue: 46, P. 101329 - 101329

Published: Feb. 2, 2023

Yangtze River Basin, China As agricultural drought originates from meteorological drought, exploring the propagation to is an important step in providing early warning of drought. In this study, Standardized Precipitation Index (SPI) and Improved Soil Moisture Anomaly Percentage (ISMAPI) were adopted indicate droughts, respectively. The time was identified, probabilistic linkages between two types investigated using copula function Bayesian network. average Basin (YRB) 48 d. times summer autumn are shorter than those spring winter. occurrence probability more serious gradually increases with intensity. Agricultural events matched proposed event-matching method. YRB, approximately 72.4% may translate into events. Generally, event that has same category as given most likely occur. Regional differences be related variations climatic conditions across regions.

Language: Английский

Citations

52
Deciphering the influence of climate change and human activities on the drought propagation DOI Creative Commons

Weiru Zhao,

Jiefeng Wu, Erhu Du

et al.

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 51, P. 101654 - 101654

Published: Jan. 10, 2024

The Yiluo River Basin (YLRB), China Understanding the alterations in drought propagation under evolving environmental conditions is crucial for efficient management of water resources. In this study, 'simulation-observation' comparison method was employed to analyze distinct periods: baseline, simulated, and disturbed periods. This facilitated quantification impact climate change human activities on characteristics, such as response time Standardized Streamflow Index (SSI) Precipitation (SPI) threshold. times SSI SPI has been prolonged at monthly seasonal scales due change, while it reduced annual scale. lengthening only evident longer temporal scales. Human have contributed higher thresholds severe extreme droughts scales, increasing probability droughts. Meanwhile, partially offset negative impacts activities. However, scale, main cause thresholds. conclusions drawn from research provide valuable insights development policies aimed managing a changing environment.

Language: Английский

Citations

18
Climate change leads to an expansion of global drought-sensitive area DOI
Qiaoqiao Li, Aizhong Ye, Yoshihide Wada

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 632, P. 130874 - 130874

Published: Feb. 16, 2024

Language: Английский

Citations

17
Trigger thresholds and propagation mechanism of meteorological drought to agricultural drought in an inland river basin DOI Creative Commons
Lin Wang, Wei Wei, Lixin Wang

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 311, P. 109378 - 109378

Published: Feb. 22, 2025

Language: Английский

Citations

2
The Peer‐To‐Peer Type Propagation From Meteorological Drought to Soil Moisture Drought Occurs in Areas With Strong Land‐Atmosphere Interaction DOI Creative Commons
Qiaoqiao Li, Aizhong Ye, Yuhang Zhang

et al.

Water Resources Research, Journal Year: 2022, Volume and Issue: 58(9)

Published: Aug. 25, 2022

Abstract Meteorological and soil drought is disastrous to natural social systems. It expected that the occurrence of meteorological compound events will become more frequent extreme in future. The propagation process plays an essential role drought. However, not clear, especially quantification characteristic rarely realized. This study constructs intensity index (DIP) duration (DDP), then puts forward partition China. Furthermore, this preliminarily discussed driving factors relationship between land‐atmosphere interaction main (arid type area, peer‐to‐peer humid area). results show DDP DIP are significantly negatively correlated China from 1981 2020. From southeast northwest, gradually increased decreased. We further concluded 68% regions with similar (peer‐to‐peer area) concentrated semiarid dry subhumid, which exactly area strong interaction. In all land use types, grasslands most prone reveals law mechanism provides a new idea attempt clarify process.

Language: Английский

Citations

53
Observed Changes in Meteorological Drought Events during 1981–2020 over Rwanda, East Africa DOI Open Access

Jacqueline Uwimbabazi,

Yuanshu Jing, Vedaste Iyakaremye

et al.

Sustainability, Journal Year: 2022, Volume and Issue: 14(3), P. 1519 - 1519

Published: Jan. 28, 2022

Drought is one of the most complex natural phenomena affecting life and livelihood people, especially in current time human-induced climate change. This research employs ground-based observations to assess recent spatiotemporal characteristics meteorological drought events over Rwanda. The examined based on Standardized Precipitation Evapotranspiration Index (SPEI) (SPI) at seasonal annual scales from 1981 2020. Man–Kendal test was used evaluate trends rainfall, temperature, SPEI values scale during March May (MAM) October December (OND) seasons. analysis revealed nonsignificant (8.4 mm/decade), MAM (−3.4 OND (4.5 mm/decade) while an apparent significant increasing trend surface air temperature obtained (0.19 °C/decade), (0.2 (0.23 °C/decade) slices. Overall, indicated that country more prone moderate than severe extreme However, intensity, duration, frequency differ spatially among findings this study inform policy decision-makers past experienced behavior, which can serve as a baseline for future mitigation adaptation plans.

Language: Английский

Citations

47
Spatial-temporal dynamics of meteorological and soil moisture drought on the Tibetan Plateau: Trend, response, and propagation process DOI
Hui Lin, Zhongbo Yu, Xuegao Chen

et al.

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 626, P. 130211 - 130211

Published: Sept. 25, 2023

Language: Английский

Citations

34
Cross-sectoral impacts of the 2018–2019 Central European drought and climate resilience in the German part of the Elbe River basin DOI Creative Commons
Tobias Conradt,

Henry Engelhardt,

Christoph Menz

et al.

Regional Environmental Change, Journal Year: 2023, Volume and Issue: 23(1)

Published: Feb. 1, 2023

The 2018-2019 Central European drought was probably the most extreme in Germany since early sixteenth century. We assess multiple consequences of for natural systems, economy and human health German part Elbe River basin, an area 97,175 km2 including cities Berlin Hamburg contributing about 18% to GDP. employ meteorological, hydrological socio-economic data build a comprehensive picture severity, its effects cross-sectoral basin. Time series different indices illustrate severity how it progressed from meteorological water deficits via soil depletion towards low groundwater levels river runoff, losses vegetation productivity. event resulted severe production agriculture (minus 20-40% staple crops) forestry (especially through forced logging damaged wood: 25.1 million tons 2018-2020 compared only 3.4 2015-2017), while other economic sectors remained largely unaffected. However, there is no guarantee that this stability will be sustained future events; discussed light 2022, another dry year holding potential compound crisis. Given increased probability more intense long-lasting droughts parts Europe, example actual impacts relevant awareness preparation planning regions.The online version contains supplementary material available at 10.1007/s10113-023-02032-3.

Language: Английский

Citations

27