Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021)
Analyzing long-term climate changes is a prerequisite for identifying hotspot areas and developing site-specific adaptation measures. The current study focuses on assessing changes in precipitation, maximum and minimum temperatures, and potential evapotranspiration in Zambia and Malawi from 1981 to...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
MDPI
2024
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| _version_ | 1811139581914906624 |
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| author | Demissie, T Gebrechorkos, SH |
| author_facet | Demissie, T Gebrechorkos, SH |
| author_sort | Demissie, T |
| collection | OXFORD |
| description | Analyzing long-term climate changes is a prerequisite for identifying hotspot areas and developing site-specific adaptation measures. The current study focuses on assessing changes in precipitation, maximum and minimum temperatures, and potential evapotranspiration in Zambia and Malawi from 1981 to 2021. High-resolution precipitation and temperature datasets are used, namely, Climate Hazards Group InfraRed Precipitation with Station data (0.05°) and Multi-Source Weather (0.1°). The Mann–Kendall trend test and Sen’s Slope methods are employed to assess the changes. The trend analysis shows a non-significant increase in annual precipitation in many parts of Zambia and Central Malawi. In Zambia and Malawi, the average annual and seasonal maximum and minimum temperatures show a statistically significant increasing trend (up to 0.6 °C/decade). The change in precipitation during the major rainy seasons (December–April) shows a non-significant increasing trend (up to 3 mm/year) in a large part of Zambia and Central Malawi. However, Malawi and Northern Zambia show a non-significant decreasing trend (up to −5 mm/year). The change in December–April precipitation significantly correlates with El Niño–Southern Oscillation (Indian Ocean Dipole) in Southern (Northern) Zambia and Malawi. To minimize the impact of the observed changes, it is imperative to develop adaptation measures to foster sustainability in the region. |
| first_indexed | 2024-09-25T04:08:22Z |
| format | Journal article |
| id | oxford-uuid:0eb56170-23bb-4457-a2ff-18ac58200f17 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:08:22Z |
| publishDate | 2024 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oxford-uuid:0eb56170-23bb-4457-a2ff-18ac58200f172024-06-07T20:17:39ZSpatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0eb56170-23bb-4457-a2ff-18ac58200f17EnglishJisc Publications RouterMDPI2024Demissie, TGebrechorkos, SHAnalyzing long-term climate changes is a prerequisite for identifying hotspot areas and developing site-specific adaptation measures. The current study focuses on assessing changes in precipitation, maximum and minimum temperatures, and potential evapotranspiration in Zambia and Malawi from 1981 to 2021. High-resolution precipitation and temperature datasets are used, namely, Climate Hazards Group InfraRed Precipitation with Station data (0.05°) and Multi-Source Weather (0.1°). The Mann–Kendall trend test and Sen’s Slope methods are employed to assess the changes. The trend analysis shows a non-significant increase in annual precipitation in many parts of Zambia and Central Malawi. In Zambia and Malawi, the average annual and seasonal maximum and minimum temperatures show a statistically significant increasing trend (up to 0.6 °C/decade). The change in precipitation during the major rainy seasons (December–April) shows a non-significant increasing trend (up to 3 mm/year) in a large part of Zambia and Central Malawi. However, Malawi and Northern Zambia show a non-significant decreasing trend (up to −5 mm/year). The change in December–April precipitation significantly correlates with El Niño–Southern Oscillation (Indian Ocean Dipole) in Southern (Northern) Zambia and Malawi. To minimize the impact of the observed changes, it is imperative to develop adaptation measures to foster sustainability in the region. |
| spellingShingle | Demissie, T Gebrechorkos, SH Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title | Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title_full | Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title_fullStr | Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title_full_unstemmed | Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title_short | Spatio-Temporal Trends in Precipitation, Temperature, and Extremes: A Study of Malawi and Zambia (1981–2021) |
| title_sort | spatio temporal trends in precipitation temperature and extremes a study of malawi and zambia 1981 2021 |
| work_keys_str_mv | AT demissiet spatiotemporaltrendsinprecipitationtemperatureandextremesastudyofmalawiandzambia19812021 AT gebrechorkossh spatiotemporaltrendsinprecipitationtemperatureandextremesastudyofmalawiandzambia19812021 |