Meteorological drought and long-term trends and spatial variability of rainfall in the Niger River Basin, Nigeria

Environmental Science and Pollution Research, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Язык: Английский

---

Mapping drought evolution in Ethiopia: trends, clustering, and Bayesian estimation of abrupt changes

Natural Hazards, Год журнала: 2024, Номер unknown

Опубликована: Окт. 13, 2024

Язык: Английский

---

Climate Dynamics and Rain-fed Tuber Crop Yield Cultivated by Small-scale Landowner Under Global Warming in Wolaita Zone Southern Ethiopia

American Journal of Environmental and Resource Economics, Год журнала: 2025, Номер 10(2), С. 46 - 64

Опубликована: Май 9, 2025

Agriculture is a backbone of Ethiopian economy, contributing vital role to food security and employment in rural communities. Climate change variability have been adversely influenced, challenging the country’s efforts ensure security. As result, this study investigated association between climate tuber crop yields southern Ethiopia. Modified Mann-Kendal trend test coefficient variation were implemented examine while Seaborne bivariate kernel density was used assess how has related with yields. The also evaluated predictive potential multivariate regression by means determination root mean square error metrics. rainfall characteristics showed increasing during spring, autumn annually at rate 0.32 mm, 1.67 mm 0.25 whereas significantly decreasing summer rainy season 0.455 mm/year. Spring revealed moderate high variability, posing risks rain-fed farming. Days night time 0.053°C 0.16°C 1981-2021 period. A reasonable yield harvested cumulative ranging from 450.0 650.0 growing season, day temperature 23.0-26.0°C 11.5-14.0°C. When above 26.0°C below 11.5°C, sweet potato taro decrease, harvesting utterly unexpected. RF model proved be best performing algorithm allowing for optimal prediction, assisting farmers decision makers better planning production management. spring rainfall, combined an temperatures, could reduce agricultural productivity, leading insecurity. Therefore, crops can improved supplementing farming system irrigation applying modern techniques operations farmers. Moreover, finding suggests that need carefully select plant varieties tolerant ambient conditions, which will more prevalent context change. There intensify adaptation measures minimize negative consequences improve adaptive capacity

Язык: Английский

---

Changing Rainfall Patterns in the Northeastern South Kivu Region, Democratic Republic of the Congo: A Detailed Analysis Using CHIRPS Rainfall Data (1981–2023)

Earth Systems and Environment, Год журнала: 2024, Номер 8(4), С. 1733 - 1750

Опубликована: Ноя. 6, 2024

Abstract Understanding changes in rainfall patterns is vital for effective water resource management and agricultural planning climate-sensitive regions. In Northeastern South Kivu, Democratic Republic of the Congo, limited knowledge dynamics poses challenges local climate assessments. This study analyzed using Climate Hazards Group InfraRed Precipitation with Stations (CHIRPS) dataset from 1981 to 2023 fill this gap. The findings revealed significant spatial temporal across regions Kabare, Bukavu, Kalehe, Idjwi. Mean annual ranged 1136.92 mm 2048.85 mm, coefficients variation between 8.23% 8.45%. Monthly fluctuations were substantial, ranging 16 56.35%. Standardized anomalies indicated a shift predominantly wet conditions 1980s drier later decades, over half years 1990 recording below-average rainfall. Mann-Kendall trend analysis, supported by Innovative Trend Analysis (ITA), confirmed decreases rainfall, rates − 3.53 -5.72 mm/year. Additionally, intensity indices highlighted decline total precipitation, suggested fewer extreme events. Spatial variability was observed, like Kalehe Bukavu showed higher values such as R95P RX1day compared Kabare These results underscored urgent need adaptive strategies mitigate scarcity manage changing region.

Язык: Английский

---

Assessing the Spatiotemporal variability and trends of rainfall, temperature, and NDVI in Saudi Arabia from 1980 to 2011 using meteorological station data and google earth engine

Theoretical and Applied Climatology, Год журнала: 2024, Номер 156(1)

Опубликована: Дек. 28, 2024

Язык: Английский

---