Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana
With varied implications, Ghana’s temperature and rainfall are projected to rise and decline, respectively. A study exposing specific areas of concern for appropriate responses in this regard is a welcome one. This study sought to describe the temporal variations in temperature and rainfall in the B...
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| Format: | Article |
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Wiley
2020-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2020/3402178 |
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| author | Yaw Asamoah Kow Ansah-Mensah |
| author_facet | Yaw Asamoah Kow Ansah-Mensah |
| author_sort | Yaw Asamoah |
| collection | DOAJ |
| description | With varied implications, Ghana’s temperature and rainfall are projected to rise and decline, respectively. A study exposing specific areas of concern for appropriate responses in this regard is a welcome one. This study sought to describe the temporal variations in temperature and rainfall in the Bawku Area of Ghana. A forty-year (1976–2015) daily climate data was collected on three meteorological stations from the Ghana Meteorological Agency. Normality test, homogeneity test, Standardised Precipitation Index (SPI) analysis, Mann–Kendall trend test, and One-way post hoc ANOVA were performed using XLSTAT and DrinC. Over the period under study, the mean annual rainfall pattern was generally erratic, fluctuating between 669.8 mm and 1339.4.6 mm with an annual average of 935.3 mm. The long-term (40-year period) average temperature of the three stations, on the other hand, was 28.7°C, varying between 26.9°C and 29.9°C annually. Whereas the SPI value of 2006 was ≥2.0, indicating extremely wet year with 2.3% probability of recurring once every 50 years, 1988 was the hottest year with temperature anomaly value of 1.2°C, while coolest years were 1979 (−1.8°C) and 1976 (−1.0°C). The Mann–Kendall trend test showed a rise in rainfall in Binduri, Garu-Tempane, and Manga, yet none of the rainfall changes were statistically significant (P>0.05). Mean temperature on the other hand experienced a significant rise (P<0.05). With an R-square of 34.7%, the rise in temperature in Manga witnessed the most significant change in annual temperature changes. There were statistically significant (P<0.05) differences in the interdecadal temperature over the 40-year period. Generally, it can be stated that both temperature and rainfall vary in the study area with various degrees of disparities, but temperature assumes an upward trend at a faster rate. We therefore recommend that stakeholders resort to the construction of dams and boreholes to ensure regular availability of water for both domestic and agricultural uses. |
| format | Article |
| id | doaj-art-66c6845583624e16bb6a9dfcbb349930 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-66c6845583624e16bb6a9dfcbb3499302025-08-20T03:34:47ZengWileyAdvances in Meteorology1687-93091687-93172020-01-01202010.1155/2020/34021783402178Temporal Description of Annual Temperature and Rainfall in the Bawku Area of GhanaYaw Asamoah0Kow Ansah-Mensah1Department of Geography Education, University of Education, Winneba, GhanaDepartment of Geography and Regional Planning, University of Cape Coast, Cape Coast, GhanaWith varied implications, Ghana’s temperature and rainfall are projected to rise and decline, respectively. A study exposing specific areas of concern for appropriate responses in this regard is a welcome one. This study sought to describe the temporal variations in temperature and rainfall in the Bawku Area of Ghana. A forty-year (1976–2015) daily climate data was collected on three meteorological stations from the Ghana Meteorological Agency. Normality test, homogeneity test, Standardised Precipitation Index (SPI) analysis, Mann–Kendall trend test, and One-way post hoc ANOVA were performed using XLSTAT and DrinC. Over the period under study, the mean annual rainfall pattern was generally erratic, fluctuating between 669.8 mm and 1339.4.6 mm with an annual average of 935.3 mm. The long-term (40-year period) average temperature of the three stations, on the other hand, was 28.7°C, varying between 26.9°C and 29.9°C annually. Whereas the SPI value of 2006 was ≥2.0, indicating extremely wet year with 2.3% probability of recurring once every 50 years, 1988 was the hottest year with temperature anomaly value of 1.2°C, while coolest years were 1979 (−1.8°C) and 1976 (−1.0°C). The Mann–Kendall trend test showed a rise in rainfall in Binduri, Garu-Tempane, and Manga, yet none of the rainfall changes were statistically significant (P>0.05). Mean temperature on the other hand experienced a significant rise (P<0.05). With an R-square of 34.7%, the rise in temperature in Manga witnessed the most significant change in annual temperature changes. There were statistically significant (P<0.05) differences in the interdecadal temperature over the 40-year period. Generally, it can be stated that both temperature and rainfall vary in the study area with various degrees of disparities, but temperature assumes an upward trend at a faster rate. We therefore recommend that stakeholders resort to the construction of dams and boreholes to ensure regular availability of water for both domestic and agricultural uses.http://dx.doi.org/10.1155/2020/3402178 |
| spellingShingle | Yaw Asamoah Kow Ansah-Mensah Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana Advances in Meteorology |
| title | Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana |
| title_full | Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana |
| title_fullStr | Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana |
| title_full_unstemmed | Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana |
| title_short | Temporal Description of Annual Temperature and Rainfall in the Bawku Area of Ghana |
| title_sort | temporal description of annual temperature and rainfall in the bawku area of ghana |
| url | http://dx.doi.org/10.1155/2020/3402178 |
| work_keys_str_mv | AT yawasamoah temporaldescriptionofannualtemperatureandrainfallinthebawkuareaofghana AT kowansahmensah temporaldescriptionofannualtemperatureandrainfallinthebawkuareaofghana |