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Abstract
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Article Information:
Trends and Variability in Localized Precipitation Around Kibale National Park, Uganda, Africa
Mary D. Stampone, Joel Hartter, Colin A. Chapman and Sadie J. Ryan
Corresponding Author: Mary Stampone
Submitted: 2010 September, 01
Accepted: 2010 October, 09
Published: 2011 January, 05 |
Abstract:
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Our objective was to understand and describe local spatial and temporal variability in precipitation
around Kibale National Park, a tropical forest area of high conservation value. Continental or regional-scale
trends are often relied upon to make policy and management decisions, but these analyses are often at too
coarse a resolution to capture important variability at a finer scale where management actions operate. Monthly
rainfall data derived from ten long-term station records (1941-1975) were used to evaluate local spatiotemporal
variability in seasonal and annual rainfall for the area surrounding Kibale National Park. The magnitude,
direction and significance of trends in seasonal and annual rainfall within the area surrounding the park were
identified using the Mann-Kendall trend test and Sen’s slope estimator. The standardized precipitation index
was calculated at 3- and 12-month periods to identify areas of relative wetness or dryness. Analysis of annual
trends and precipitation indices indicated that patterns in annual time series do not reflect the direction and
magnitude of seasonal trends nor the spatial variability in intra-annual rainfall at the local scale. Significant
negative trends in the seasonal long rains, following dry season and short rains were identified at stations west
of Kibale, while significant positive trends in the seasonal short rains occurred at stations north of the park.
Stations along the western park boundary tended to have more years in which the two dry seasons were
abnormally dry than those stations located further from the park.
Key words: Albertine Rift, East African rainfall, Kibale National Park, precipitation variability, Uganda climate, ,
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Cite this Reference:
Mary D. Stampone, Joel Hartter, Colin A. Chapman and Sadie J. Ryan, . Trends and Variability in Localized Precipitation Around Kibale National Park, Uganda, Africa. Research Journal of Environmental and Earth Sciences, (1): 14-23.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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