Rainfall variability and trends over the African continent using TAMSAT data (1983-2020): towards climate change resilience and adaptation

Simple item page
cg.coverage.countryGuinea
cg.coverage.countryMozambique
cg.coverage.countryRwanda
cg.coverage.countrySouth Africa
cg.coverage.iso3166-alpha2GN
cg.coverage.iso3166-alpha2MZ
cg.coverage.iso3166-alpha2RW
cg.coverage.iso3166-alpha2ZA
cg.coverage.regionWestern Africa
cg.coverage.regionEastern Africa
cg.coverage.regionSouthern Africa
cg.creator.identifierNiranga Alahacoon: 0000-0003-0984-5176
cg.identifier.doihttps://doi.org/10.3390/rs14010096en
cg.identifier.iwmilibraryH050897
cg.isijournalISI Journalen
cg.issn2072-4292en
cg.issue1en
cg.journalRemote Sensingen
cg.reviewStatusPeer Reviewen
cg.volume14en
dc.contributor.authorAlahacoon, Nirangaen
dc.contributor.authorEdirisinghe, M.en
dc.contributor.authorSimwanda, M.en
dc.contributor.authorPerera, E. N. C.en
dc.contributor.authorNyirenda , V. R.en
dc.contributor.authorRanagalage, M.en
dc.date.accessioned2022-01-31T16:26:07Zen
dc.date.available2022-01-31T16:26:07Zen
dc.identifier.urihttps://hdl.handle.net/10568/117849
dc.titleRainfall variability and trends over the African continent using TAMSAT data (1983-2020): towards climate change resilience and adaptationen
dcterms.abstractThis study reveals rainfall variability and trends in the African continent using TAMSAT data from 1983 to 2020. In the study, a Mann–Kendall (MK) test and Sen’s slope estimator were used to analyze rainfall trends and their magnitude, respectively, under monthly, seasonal, and annual timeframes as an indication of climate change using different natural and geographical contexts (i.e., sub-regions, climate zones, major river basins, and countries). The study finds that the highest annual rainfall trends were recorded in Rwanda (11.97 mm/year), the Gulf of Guinea (river basin 8.71 mm/year), the tropical rainforest climate zone (8.21 mm/year), and the Central African region (6.84 mm/year), while Mozambique (-0.437 mm/year), the subtropical northern desert (0.80 mm/year), the west coast river basin of South Africa (-0.360 mm/year), and the Northern Africa region (1.07 mm/year) show the lowest annual rainfall trends. There is a statistically significant increase in the rainfall in the countries of Africa’s northern and central regions, while there is no statistically significant change in the countries of the southern and eastern regions. In terms of climate zones, in the tropical northern desert climates, tropical northern peninsulas, and tropical grasslands, there is a significant increase in rainfall over the entire timeframe of the month, season, and year. This implies that increased rainfall will have a positive effect on the food security of the countries in those climatic zones. Since a large percentage of Africa’s agriculture is based only on rainfall (i.e., rain-fed agriculture), increasing trends in rainfall can assist climate resilience and adaptation, while declining rainfall trends can badly affect it. This information can be crucial for decision-makers concerned with effective crop planning and water resource management. The rainfall variability and trend analysis of this study provide important information to decision-makers that need to effectively mitigate drought and flood risk.en
dcterms.accessRightsOpen Access
dcterms.available2021-12-25
dcterms.bibliographicCitationAlahacoon, Niranga; Edirisinghe, M.; Simwanda, M.; Perera, E. N. C.; Nyirenda , V. R.; Ranagalage, M. 2022. Rainfall variability and trends over the African continent using TAMSAT data (1983-2020): towards climate change resilience and adaptation. Remote Sensing, 14(1):96. [doi: https://doi.org/10.3390/rs14010096]en
dcterms.extent14(1):96en
dcterms.issued2022-01-01
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherMDPIen
dcterms.subjectrainfall patternsen
dcterms.subjecttrendsen
dcterms.subjectclimate change adaptationen
dcterms.subjectresilienceen
dcterms.subjectweather hazardsen
dcterms.subjectclimatic zonesen
dcterms.subjectriver basinsen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IWMI Journal Articles