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Index Geophysics

Patterns of Dekadal Rainfall Variation Over a Selected Region in Lake Victoria Basin, Uganda

Item

Title (Dublin Core)

Patterns of Dekadal Rainfall Variation Over a Selected Region in Lake Victoria Basin, Uganda

Description (Dublin Core)

Understanding variations in rainfall in tropical regions is important due to its impacts on water resources, health and agriculture. This study assessed the dekadal rainfall patterns and rain days to determine intra-seasonal rainfall variability during the March–May season using the Mann–Kendall ( M K ) trend test and simple linear regression ( S L R ) over the period 2000–2015. Results showed an increasing trend of both dekadal rainfall amount and rain days (third and seventh dekads). The light rain days ( S L R = 0.181; M K = 0.350) and wet days ( S L R = 0.092; M K = 0.118) also depict an increasing trend. The rate of increase of light rain days and wet days during the third dekad (light rain days: S L R = 0.020; M K = 0.279 and wet days: S L R = 0.146; M K = 0.376) was slightly greater than during the seventh dekad (light rain days: S L R = 0.014; M K = 0.018 and wet days: S L R = 0.061; M K = 0.315) dekad. Seventy-four percent accounted for 2–4 consecutive dry days, but no significant trend was detected. The extreme rainfall was increasing over the third ( M K = 0.363) and seventh ( M K = 0.429) dekads. The rainfall amount and rain days were highly correlated (r: 0.43–0.72).

Creator (Dublin Core)

Isaac Mugume
Michel D. S. Mesquita
Charles Basalirwa
Yazidhi Bamutaze
Joachim Reuder
Alex Nimusiima
Daniel Waiswa
Godfrey Mujuni
Sulin Tao
Triphonia Jacob Ngailo

Subject (Dublin Core)

rain days
wet days
light rain days
dekadal rainfall
intra-season rainfall variation
Meteorology. Climatology
QC851-999

Publisher (Dublin Core)

MDPI AG

Date (Dublin Core)

2016-11-01T00:00:00Z

Type (Dublin Core)

article

Identifier (Dublin Core)

2073-4433
10.3390/atmos7110150
https://doaj.org/article/80bc686bd41942daad6866fc0eb6b03c

Source (Dublin Core)

Atmosphere, Vol 7, Iss 11, p 150 (2016)

Language (Dublin Core)

EN

Relation (Dublin Core)

http://www.mdpi.com/2073-4433/7/11/150
https://doaj.org/toc/2073-4433

Provenance (Dublin Core)

Journal Licence: CC BY