Spatio-temporal rainfall trend and homogeneity analysis in flood prone area: case study of Odaw river basin-Ghana

Ackom, Edward Kofi; Adjei, Kwaku Amaning; Odai, Samuel Nii

doi:10.1007/s42452-020-03924-3

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…The escalating temperatures in the region carry significant implications for the livelihoods of the residents. The noteworthy temperature increase suggests the potential to disrupt rainfall patterns through processes like evapotranspiration (Ackom et al, 2020;Buyantuyev & Wu, 2010;Fonji & Taff, 2014), leading to water scarcity manifested in the drying-up of rivers and deficient soil moisture. This poses a major challenge for agriculture in the area, particularly as farmers heavily rely on rain-fed farming (Asamoah & Ansah-Mensah, 2020;Koglo et al, 2019).…”

Section: Effects Of Increasing Temperatures In the Kara Areamentioning

confidence: 99%

“…Residents in the region may face continued uncertainty regarding temperature variations in the coming years. Consequently, it is imperative to conduct a thorough assessment of anticipated mean and extreme climate events under climate change and their associated consequences (Ackom et al, 2020;Buyantuyev & Wu, 2010;Fonji & Taff, 2014). This should be an integral part of initiatives aimed at promoting agricultural development and mitigating the impact of high-temperature-related infections in the Kara districts.…”

Section: Effects Of Increasing Temperatures In the Kara Areamentioning

confidence: 99%

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Analyzing the Impact of Land Cover Changes on Spatio-Temporal Temperature Dynamics in the Kara Region of Togo

Takin,

Shwe,

Okrah

et al. 2024

EJDEVELOP

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This comprehensive study delves into the intricate interplay between temperature trends and land cover dynamics in the Kara region, offering robust insights into the evolving climate and environmental patterns. Employing the Mann-Kendall trend test, our analysis reveals a statistically significant and consistent warming trend over the study period. The observed low p-values, positive Tau values, and upward-sloping regression lines emphasize the urgent need for proactive measures to address the climate-related challenges faced by the region. Simultaneously, a meticulous correlation analysis explores the relationships between land surface temperature (LST) and key land metrics- farms, barelands, built-ups, forests, and water bodies. Farmlands exhibit a noteworthy and statistically significant negative correlation of −0.74 with LST (p < 0.05), indicating a cooling influence and supported by a substantial 43.8% predictive power. Conversely, barelands and built-ups demonstrate strong positive correlations of 0.89 and 0.78, respectively, with LST both statistically significant at the 95% confidence level (p < 0.05), emphasizing their considerable warming impact. Forests and water bodies, with moderate negative correlations of −0.65 and −0.54, maintain statistical significance (p < 0.05), indicating their role in temperature moderation, supported by 8.5% and 13% significance. The inclusion of Sen’s slope values further enriches the analysis, providing quantitative insights into the rate of temperature change. The positive slope values underscore the increasing trend in temperatures over each respective decade. The observed statistical significances, Tau values, and Sen’s slope values accentuate the importance of these relationships for effective land management and environmental planning. Recognizing the cooling influence of farmlands suggests their potential use in strategic urban planning to mitigate temperature increases. Conversely, the warming impact of barelands and built-ups emphasizes the need for sustainable urban development practices to counteract rising temperatures in urbanized regions. Additionally, the cooling influence of forests and water bodies underscores their crucial role in temperature moderation.

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Section: Effects Of Increasing Temperatures In the Kara Areamentioning

confidence: 99%

Section: Effects Of Increasing Temperatures In the Kara Areamentioning

confidence: 99%

Analyzing the Impact of Land Cover Changes on Spatio-Temporal Temperature Dynamics in the Kara Region of Togo

Takin,

Shwe,

Okrah

et al. 2024

EJDEVELOP

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“…The rainfall shows a bimodal pattern, with the highest rainfall recorded between April and July and the lowest between September and October, with an average annual rainfall of 730 mm [25,26]. The catchment is densely populated, with more than 60% of the population of Accra, where about 30% of the residents are exposed to flood risk [27,28]. Rainfall in the Odaw catchment occurs in the form of short but intensive storm events, which cause localized flash and riverine floods in areas with poor and choked drainage systems [29].…”

Section: Study Areamentioning

confidence: 99%

“…Intermittent droughts are observed in the Odaw catchment; however, this does not pose major exposure problems and risks of water-borne disease, as the area is largely urbanized and the households do not depend on the Odaw river for their drinking water supply. However, droughts contribute to reduced water volume, leading to a higher concentration of pollutants in the stagnant waters, which are washed into drinking water systems via floodwaters [27,32].…”

Section: Study Areamentioning

confidence: 99%

“…To obtain data on the exposure to and risks of water-borne diseases, household surveys were conducted in February 2019. The four communities identified for the survey were purposively selected due to their proximity to the main Odaw River, exposure to vulnerability to floods, and frequently reported cases of water-related infectious diseases [15,27]. The sample size was estimated using the method stated:…”

Section: Sampling and Sample Size Estimation For Household Surveysmentioning

confidence: 99%

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Water and Health Nexus—Land Use Dynamics, Flooding, and Water-Borne Diseases in the Odaw River Basin, Ghana

Ntajal

Höllermann

Falkenberg

et al. 2022

Water

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Water pollution is a major issue in Ghana with direct impacts on human health. However, the underlying drivers of exposure and risks are not comprehensively explored and understood, while the diseases continue posing huge burdens. The key question addressed is: what are the key drivers influencing the water–health nexus, particularly water-borne disease risks in the Odaw River basin, Ghana? Multiple approaches were integrated: qualitative system dynamic modeling and urban land-use change assessment. Multi-level stakeholder participation, including household surveys, focus group discussions, and workshops were employed in developing and identifying indicators and feedback loops. The results revealed that communities have access to water and sanitation, but water-borne diseases are still prevalent. Flooding influenced by poor land use planning and solid waste disposal are key risk factors, contributing to water pollution and disease outbreaks. The major land-use change is the conversion of natural to built-up areas, resulting in decreased urban vegetation cover and increased soil sealing, partly contributing to flood risk. Complex linkages and multiple feedback loops between land use, flooding, water pollution, and water-borne disease risks were identified. In addition to supplying safe drinking water and sanitation, multi-sectoral collaborations are required to co-design and implement integrated interventions, including flood risk reduction, urban land use plans, and improved waste management to reduce disease risks and promote health.

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Assessment of temporal homogeneity of long-term rainfall time-series datasets by applying classical homogeneity tests

Kabbilawsh

Chithra

2023

Environ Dev Sustain

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Spatio-temporal rainfall trend and homogeneity analysis in flood prone area: case study of Odaw river basin-Ghana

Cited by 8 publications

References 41 publications

Analyzing the Impact of Land Cover Changes on Spatio-Temporal Temperature Dynamics in the Kara Region of Togo

Analyzing the Impact of Land Cover Changes on Spatio-Temporal Temperature Dynamics in the Kara Region of Togo

Water and Health Nexus—Land Use Dynamics, Flooding, and Water-Borne Diseases in the Odaw River Basin, Ghana

Assessment of temporal homogeneity of long-term rainfall time-series datasets by applying classical homogeneity tests

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