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Schlagwörter:
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Zusammenfassung:
Climate change (CC) is becoming a new normal in the 21st century. Greater Accra has the largest population in Ghana and is vulnerable to extreme climate events such as flood, heatwaves, drought etc. However, there are limited studies on the future projections of climate change due to data scarcity. The study bias-corrected six Regional Climate Models under the SSP scenarios of the CMIP6 using the PUMGF reanalysis data as well as ground station data. The results of the study show a potential decline and a shift in rainfall intensity in the Greater Accra region under the SSP scenarios. However, rainfall is expected to increase to about 31% in 2030 under SSP5. This could trigger extreme events such as floods in the region. Minimum temperature is projected to rise by 1.33-2.02oC, 1.49-2.22oC, 1.71-4.75oC and 1.75-4.83oC under SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5 respectively. Similarly, maximum temperature is expected to increase by 0.81-1.45oC, 0.84-1.54oC, 0.96-1.70oC and 0.98-1.73oC under SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5, respectively until 2059. The adverse impacts of climate change coupled with the expansion of population growth, urbanization, hydropower etc. are projected to intensify in the future where climate becomes hotter and drier. Therefore, the findings of the study are expected to inform policies in Ghana on goals 11 (sustainable cities and communities) and 13 (climate action) of the SDGs. The findings are to inform policies on the role of cities, regions, and local authorities in addressing climate change as part of fulfilling Ghana's nationally determined contributions within the Paris Agreement.
