Statistical Analysis and Forecasting of Rainfall Patterns and Trends in Gombe North-Eastern Nigeria

Main Article Content

Abe A. O.
Q. A. Adeniji
Rabiu J. A.
Adegboyega O.
Raheem I. O.
Rasaki M.G.
Sada S. M.
https://orcid.org/0000-0003-3458-6153
Fidelis L.
https://orcid.org/0000-0002-5102-1173

Abstract

Rainfall in Nigeria is highly dynamic and variable on a temporal and spatial scale. This has taken a more pronounced dimension due to climate change. In this study, Standard Precipitation Index (SPI) and Mann-Kendall test statistical tools were employed to analyze rainfall trends and patterns in Gombe metropolis between 1990 and 2020 and the ARIMA model was used for making the forecast for ten (10) years. Daily rainfall data of 31 years obtained from Nigerian Meteorological Agency, (NIMET) was used for the study. The daily rainfall data was subjected to several analyses. Standard precipitation index showed that alternation of wet and dry period conditions had been witnessed in the study area. The result obtained showed that there is an upward trend in the annual rainfall amount received in Gombe over the last 31 years at a rate of 3.98 mm/year. The results for the forecast shows that the annual rainfall to be received in Gombe continues in a range above the mean which serves as an indication that the decade will experience more wet years than dry years. The study concludes that the pattern of rainfall in Gombe is a cyclic pattern. The current trend may affect soil moisture, flooding and subsequently lead to ecological change. The study recommends that inhabitants of the study areas should plan their cropping season based on climatic information of their area.

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Statistical Analysis and Forecasting of Rainfall Patterns and Trends in Gombe North-Eastern Nigeria. IJP [Internet]. 2022 Jun. 1 [cited 2024 Mar. 29];20(2):64-77. Available from: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/989
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How to Cite

1.
Statistical Analysis and Forecasting of Rainfall Patterns and Trends in Gombe North-Eastern Nigeria. IJP [Internet]. 2022 Jun. 1 [cited 2024 Mar. 29];20(2):64-77. Available from: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/989

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