Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions
Rainfall onset and cessation date greatly influence cropping calendar decisions in rain-fed agricultural systems. This paper examined trends of onsets, cessation, and the length of growing season over Northern Ghana using CHIRPS-v2, gauge, and farmers’ perceptions data between 1981 and 2019. Results...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2021
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/117994 |
| _version_ | 1855524348028256256 |
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| author | Atiah, W.A. Muthoni, Francis K. Kotu, Bekele Hundie Kizito, Fred Amekudzi, L.K. |
| author_browse | Amekudzi, L.K. Atiah, W.A. Kizito, Fred Kotu, Bekele Hundie Muthoni, Francis K. |
| author_facet | Atiah, W.A. Muthoni, Francis K. Kotu, Bekele Hundie Kizito, Fred Amekudzi, L.K. |
| author_sort | Atiah, W.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rainfall onset and cessation date greatly influence cropping calendar decisions in rain-fed agricultural systems. This paper examined trends of onsets, cessation, and the length of growing season over Northern Ghana using CHIRPS-v2, gauge, and farmers’ perceptions data between 1981 and 2019. Results from CHIRPS-v2 revealed that the three seasonal rainfall indices have substantial latitudinal variability. Significant late and early onsets were observed at the West and East of 1.5° W longitude, respectively. Significant late cessations and longer growing periods occurred across Northern Ghana. The ability of farmers’ perceptions and CHIRPS-v2 to capture rainfall onsets are time and location-dependent. A total of 71% of farmers rely on traditional knowledge to forecast rainfall onsets. Adaptation measures applied were not always consistent with the rainfall seasonality. More investment in modern climate information services is required to complement the existing local knowledge of forecasting rainfall seasonality. |
| format | Journal Article |
| id | CGSpace117994 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1179942025-08-15T13:21:47Z Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions Atiah, W.A. Muthoni, Francis K. Kotu, Bekele Hundie Kizito, Fred Amekudzi, L.K. climate change adaptation rainfall farmers Rainfall onset and cessation date greatly influence cropping calendar decisions in rain-fed agricultural systems. This paper examined trends of onsets, cessation, and the length of growing season over Northern Ghana using CHIRPS-v2, gauge, and farmers’ perceptions data between 1981 and 2019. Results from CHIRPS-v2 revealed that the three seasonal rainfall indices have substantial latitudinal variability. Significant late and early onsets were observed at the West and East of 1.5° W longitude, respectively. Significant late cessations and longer growing periods occurred across Northern Ghana. The ability of farmers’ perceptions and CHIRPS-v2 to capture rainfall onsets are time and location-dependent. A total of 71% of farmers rely on traditional knowledge to forecast rainfall onsets. Adaptation measures applied were not always consistent with the rainfall seasonality. More investment in modern climate information services is required to complement the existing local knowledge of forecasting rainfall seasonality. 2021-12-13 2022-02-07T11:18:38Z 2022-02-07T11:18:38Z Journal Article https://hdl.handle.net/10568/117994 en Open Access application/pdf MDPI Atiah, W.A., Muthoni, F.K., Kotu, B., Kizito, F. & Amekudzi, L.K. (2021). Trends of Rainfall Onset, Cessation, and Length of Growing Season in Northern Ghana: Comparing the Rain Gauge, Satellite, and Farmer’s Perceptions. Atmosphere, 12(12): 1674, 1-20. |
| spellingShingle | climate change adaptation rainfall farmers Atiah, W.A. Muthoni, Francis K. Kotu, Bekele Hundie Kizito, Fred Amekudzi, L.K. Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title | Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title_full | Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title_fullStr | Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title_full_unstemmed | Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title_short | Trends of rainfall onset, cessation, and length of growing season in northern Ghana: comparing the rain gauge, satellite, and farmer's perceptions |
| title_sort | trends of rainfall onset cessation and length of growing season in northern ghana comparing the rain gauge satellite and farmer s perceptions |
| topic | climate change adaptation rainfall farmers |
| url | https://hdl.handle.net/10568/117994 |
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