Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa

This study analyzed changes in CenTrends gridded precipitation (1961–2015) and Potential Evapotranspiration (PET; 1961–2008) across the Lake Kyoga Basin (LKB). PET was computed from gridded temperature of the Princeton Global Forcings. Correlation between precipitation or PET and climate indices was...

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Published in:Water
Main Authors: Charles Onyutha, Grace Acayo, Jacob Nyende
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2020
Subjects:
Online Access:https://doi.org/10.3390/w12041134
https://doaj.org/article/7e9f3c6d672c44b691e529b5dac82557
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spelling ftdoajarticles:oai:doaj.org/article:7e9f3c6d672c44b691e529b5dac82557 2023-05-15T17:34:37+02:00 Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa Charles Onyutha Grace Acayo Jacob Nyende 2020-04-01T00:00:00Z https://doi.org/10.3390/w12041134 https://doaj.org/article/7e9f3c6d672c44b691e529b5dac82557 EN eng MDPI AG https://www.mdpi.com/2073-4441/12/4/1134 https://doaj.org/toc/2073-4441 doi:10.3390/w12041134 2073-4441 https://doaj.org/article/7e9f3c6d672c44b691e529b5dac82557 Water, Vol 12, Iss 1134, p 1134 (2020) precipitation variability potential evapotranspiration climate indices trend analyses climate variability Lake Kyoga Basin Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2020 ftdoajarticles https://doi.org/10.3390/w12041134 2022-12-31T15:35:23Z This study analyzed changes in CenTrends gridded precipitation (1961–2015) and Potential Evapotranspiration (PET; 1961–2008) across the Lake Kyoga Basin (LKB). PET was computed from gridded temperature of the Princeton Global Forcings. Correlation between precipitation or PET and climate indices was analyzed. PET in the Eastern LKB exhibited an increase ( p > 0.05). March–April–May precipitation decreased ( p > 0.05) in most parts of the LKB. However, September–October–November (SON) precipitation generally exhibited a positive trend. Rates of increase in the SON precipitation were higher in the Eastern part where Mt. Elgon is located than at other locations. Record shows that Bududa district at the foot of Mt. Elgon experienced a total of 8, 5, and 6 landslides over the periods 1818–1959, 1960–2009, and 2010–2019, respectively. It is highly probable that these landslides have recently become more frequent than in the past due to the increasing precipitation. The largest amounts of variance in annual precipitation (38.9%) and PET (41.2%) were found to be explained by the Indian Ocean Dipole. These were followed by precipitation (17.9%) and PET (21.9%) variance explained by the Atlantic multidecadal oscillation, and North Atlantic oscillation, respectively. These findings are vital for predictive adaptation to the impacts of climate variability on water resources. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Indian Water 12 4 1134
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic precipitation variability
potential evapotranspiration
climate indices
trend analyses
climate variability
Lake Kyoga Basin
Hydraulic engineering
TC1-978
Water supply for domestic and industrial purposes
TD201-500
spellingShingle precipitation variability
potential evapotranspiration
climate indices
trend analyses
climate variability
Lake Kyoga Basin
Hydraulic engineering
TC1-978
Water supply for domestic and industrial purposes
TD201-500
Charles Onyutha
Grace Acayo
Jacob Nyende
Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
topic_facet precipitation variability
potential evapotranspiration
climate indices
trend analyses
climate variability
Lake Kyoga Basin
Hydraulic engineering
TC1-978
Water supply for domestic and industrial purposes
TD201-500
description This study analyzed changes in CenTrends gridded precipitation (1961–2015) and Potential Evapotranspiration (PET; 1961–2008) across the Lake Kyoga Basin (LKB). PET was computed from gridded temperature of the Princeton Global Forcings. Correlation between precipitation or PET and climate indices was analyzed. PET in the Eastern LKB exhibited an increase ( p > 0.05). March–April–May precipitation decreased ( p > 0.05) in most parts of the LKB. However, September–October–November (SON) precipitation generally exhibited a positive trend. Rates of increase in the SON precipitation were higher in the Eastern part where Mt. Elgon is located than at other locations. Record shows that Bududa district at the foot of Mt. Elgon experienced a total of 8, 5, and 6 landslides over the periods 1818–1959, 1960–2009, and 2010–2019, respectively. It is highly probable that these landslides have recently become more frequent than in the past due to the increasing precipitation. The largest amounts of variance in annual precipitation (38.9%) and PET (41.2%) were found to be explained by the Indian Ocean Dipole. These were followed by precipitation (17.9%) and PET (21.9%) variance explained by the Atlantic multidecadal oscillation, and North Atlantic oscillation, respectively. These findings are vital for predictive adaptation to the impacts of climate variability on water resources.
format Article in Journal/Newspaper
author Charles Onyutha
Grace Acayo
Jacob Nyende
author_facet Charles Onyutha
Grace Acayo
Jacob Nyende
author_sort Charles Onyutha
title Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
title_short Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
title_full Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
title_fullStr Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
title_full_unstemmed Analyses of Precipitation and Evapotranspiration Changes Across the Lake Kyoga Basin in East Africa
title_sort analyses of precipitation and evapotranspiration changes across the lake kyoga basin in east africa
publisher MDPI AG
publishDate 2020
url https://doi.org/10.3390/w12041134
https://doaj.org/article/7e9f3c6d672c44b691e529b5dac82557
geographic Indian
geographic_facet Indian
genre North Atlantic
North Atlantic oscillation
genre_facet North Atlantic
North Atlantic oscillation
op_source Water, Vol 12, Iss 1134, p 1134 (2020)
op_relation https://www.mdpi.com/2073-4441/12/4/1134
https://doaj.org/toc/2073-4441
doi:10.3390/w12041134
2073-4441
https://doaj.org/article/7e9f3c6d672c44b691e529b5dac82557
op_doi https://doi.org/10.3390/w12041134
container_title Water
container_volume 12
container_issue 4
container_start_page 1134
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