Extreme Temperature and Rainfall Events and Future Climate Change Projections in the Coastal Savannah Agroecological Zone of Ghana
نویسندگان
چکیده
The global climate has changed, and there are concerns about the effects on both humans environment, necessitating more research for improved adaptation. In this study, we analyzed extreme temperature rainfall events projected future change scenarios coastal Savannah agroecological zone (CSAZ) of Ghana. We utilized ETCCDI, RClimDex software (version 1.0), Mann–Kendall test, Sen’s slope estimator, standardized anomalies to analyze homogeneity, trends, magnitude, seasonal variations in (Tmax Tmin) datasets zone. SDSM was also used downscale based CanESM2 (RCP 2.6, 4.5, 8.5 scenarios) HadCM3 (A2 B2 models Model performance evaluated using statistical methods such as R2, RMSE, PBIAS. Results revealed changepoints Tmin than Tmax rainfall. again showed that CSAZ warmed over last four decades. SU25, TXn, TN90p have increased significantly zone, opposite is case TN10p DTR. Spatially varied trends were observed TXx, TNx, TNn, TX10p, TX90p, CSDI across decrease RX1day, RX5day, SDII, R10, R95p, R99p significant most parts central region compared Greater Accra Volta regions, while CDD decreased latter two regions former. CWD PRCPTOT insignificant throughout overall during calibration validation good ranged from 58–99%, 0.01–1.02 °C, 0.42–11.79 °C PBIAS, respectively. expected be highest (1.6 °C) lowest (−1.6 three well (1.5 entire according models. (1.4 (−2.1 (−2.3 greatest mean annual occur 2080s under RCP8.5, (3.2 2050s same scenario. Monthly between −98.4 247.7% −29.0 148.0% all scenarios. (0.8%) (79%) changes 2030s 2080s. findings study could helpful development appropriate adaptation plans safeguard livelihoods people
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2023
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos14020386