Review of Meteorological Drought in Africa: Historical Trends, Impacts, Mitigation Measures, and Prospects

Pure and Applied Geophysics, Год журнала: 2022, Номер 179(4), С. 1365 - 1386

Опубликована: Март 14, 2022

This review study examines the state of meteorological drought over Africa, focusing on historical trends, impacts, mitigation strategies, and future prospects. Relevant drought-related articles were systematically sourced from credible bibliographic databases covering African subregions in twentieth twenty-first centuries (i.e. 1950 to 2021), using suitable keywords. Past studies show evidence occurrence extreme events across continent. The underlying mechanisms are mostly attributed complex interactions dynamical thermodynamical mechanisms. resultant impact is evidenced decline agricultural activities water resources environmental degradation all subregions. Projected changes recovery west/east domain, while south north regions indicate a tendency for increasing characteristics. apparent intricate link between continent's development climate variability, including reoccurrence events, calls paradigm shifts policy direction. Key meant infrastructural technological growth economy being diverted develop coping adapt change effects, which changing. Efficient service delivery drought-prone hotspots, strengthening monitoring, forecasting, early warning, response systems, improved research combined effects anthropogenic systems valuable practitioners, researchers, policymakers regarding management Africa today future.

Язык: Английский

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Global assessment of drought characteristics in the Anthropocene

Resources Environment and Sustainability, Год журнала: 2023, Номер 12, С. 100105 - 100105

Опубликована: Янв. 3, 2023

Contemporary understanding of the impacts climate change on global drought characteristics (e.g., intensities, extents) is still limited and not well understood. This knowledge critical because projected changes in are expected to impact future water availability as influence decisions how resources allocated. The main aim this study improve (extents duration) Anthropocene where rapid environment caused by composite human activities change. Multi-scale earth observation data (1980−2020) Coupled Model Intercomparison Project Phase 6 models, which incorporate Shared Socioeconomic Pathways (2040−2070 2070−2100) used assess these identify climatic hotspots could drive groundwater hydrology. Results show that towards end 21st century, land areas under will significantly decrease but their durations not. Generally, there evidence significant decline proportion experience various intensities (moderate, severe extreme drought) for each category, affected reach 30% average. Moreover, some regions potential climate-groundwater interactions events directly groundwater. varying degree strong correlations (positive negative) between Australia, Europe, Southern Africa, Asia). relatively negative indicative presence considerable lags, be aridity footprints.

Язык: Английский

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Projection of Future Meteorological Droughts in Lake Urmia Basin, Iran

Water, Год журнала: 2023, Номер 15(8), С. 1558 - 1558

Опубликована: Апрель 16, 2023

Future changes (2015–2100) in precipitation and meteorological droughts Lake Urmia Basin were investigated using an average mean ensemble of eight general circulation models (GCMs) with high-resolution datasets socioeconomic pathway scenarios (SSPs) from the Coupled Model Intercomparison Project (CMIP6). In order to project drought, standardized index (SPI) was calculated. Overall, results revealed that will decrease by 3.21% 7.18% SSP1-2.6 SSP5-8.5 scenarios, respectively. The based on 6-month-timescale SPI indices projected more “Extremely dry” events scenarios. frequency months compared is expected increase 14, 7, 10, 5, 7 for Mahabad, Maragheh, Saqez, Sarab, Tabriz, Takab, stations, contrast, wet” decline all stations Basin. this study provide useful insight considering drought prevention measures be implemented advance Basin, which currently experiencing various environmental issues.

Язык: Английский

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Impact of climate change on future flood susceptibility projections under shared socioeconomic pathway scenarios in South Asia using artificial intelligence algorithms

Journal of Environmental Management, Год журнала: 2024, Номер 366, С. 121764 - 121764

Опубликована: Июль 8, 2024

Язык: Английский

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Evaluation of General Circulation Models CMIP6 Performance and Future Climate Change over the Omo River Basin, Ethiopia

Sustainability, Год журнала: 2023, Номер 15(8), С. 6507 - 6507

Опубликована: Апрель 12, 2023

One of the world’s major issues is climate change, which has a significant impact on ecosystems, human beings, agricultural productivity, water resources, and environmental management. The General Circulation Models (GCMs), specially recently released (coupled model intercomparison project six) CMIP6 are very indispensable to understand support decision makers identify adaptation strategies in response future change basin. However, proper selection skillful GCMs assessment prior task studies. objective study an attempt appraise model’s performance scenarios Shared Socioeconomic Pathways (SSPs) Omo River Basin. evaluation 20 was properly performed reproduce precipitation maximum temperature Their been carried out against best selected mean monthly Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) European Community Medium Water Range Weather Forecasts Version 5 (ECMWF-ERA5) temperature. were ranked using compromise programming method multi-criteria making. result shows that ensemble models NorESM2-MM have designated basin respectively. Mann–Kendall trend test executed models, subsequently, downscaling bias correction techniques conducted. projected seasonal June, July, August, September (JJAS) March, April, May (MAM) increasing 10.86, 17.66, 38.96 11.85, 22.1, 40.7% under SSP2452031-2060, SSP5852031-2060, SSP5852071-2100 Furthermore, trends detected MAM by 12.8% decreasing JJAS 15.23% SSP2452071-2100 scenario. projection will be increased average 0.95, 1.78, 1.4, 3.88 °C 1.53, 2.24, 1.56, 3.89 near-future far-future SSP2452071-2100, SSP5852071-2100, Additionally, shown temporal-spatial fluctuation terms

Язык: Английский

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Estimations of potential evapotranspiration from CMIP6 multi-model ensemble over Africa

Atmospheric Research, Год журнала: 2024, Номер 300, С. 107255 - 107255

Опубликована: Янв. 16, 2024

Язык: Английский

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Bacillus pumilus G5 combined with silicon enhanced flavonoid biosynthesis in drought-stressed Glycyrrhiza uralensis Fisch. by regulating jasmonate, gibberellin and ethylene crosstalk

Plant Physiology and Biochemistry, Год журнала: 2025, Номер unknown, С. 109560 - 109560

Опубликована: Янв. 1, 2025

Язык: Английский

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The spatio-temporal trend of climate and characterization of drought in Borana Zone, Ethiopia

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 8, 2025

This research assessed the Borana Zone's climate trends and drought characteristics from 1991 to 2050. Using Innovative Trend Analysis (ITA), we quantified changes. The standard Precipitation Evaporation index (SPEI) self calibrated Palmer's Droguht Severity Index (scPDSI) were selected compute drought's magnitude. significantly decreased 2020, with a variation 2021 Drought indices generally showed decreasing trend. short-term (SPEI3) in Mid-Moist (MM) category experienced greatest decline, slope of − 0.055/year during reference period. Under RCP4.5 scenarios, SPEI3 for Extremely-Most (EM) class steepest decline at 1.827/year. For RCP8.5, MM categories displayed significant reductions, annual slopes 0.073, 0.021, 0.14 SPEI3, SPEI12, scPDSI, respectively. moisture intensity also diminishing trend, scPDSI projected decrease by 40.47% 20.77% under two emission scenarios. During period, Near Normal (NN) frequency varied 71.39% 82.81%, but is expected 12% 8% adverse impacts can be mitigated building capacity drought-vulnerable community.

Язык: Английский

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From indices to impacts using environmental and socio-economic clustering in Kenya

Journal of Hydrology Regional Studies, Год журнала: 2025, Номер 58, С. 102269 - 102269

Опубликована: Март 4, 2025

Язык: Английский

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Integrated SSP-RCP Scenarios for Modeling the Impacts of Climate Change and Land Use on Ecosystem Services in East Africa

Ecological Modelling, Год журнала: 2025, Номер 504, С. 111092 - 111092

Опубликована: Март 24, 2025

Язык: Английский

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