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Evidence of climate variability from rainfall and temperature fluctuations in semi-arid region of the tropics


Umar, Da'u Abba and Ramli, Mohammad Firuz and Aris, Ahmad Zaharin and Jamil, Nor Rohaizah and Aderem, Adebayo Abel (2019) Evidence of climate variability from rainfall and temperature fluctuations in semi-arid region of the tropics. Atmospheric Research, 224. pp. 52-64. ISSN 0169-8095


The pattern of rainfall and temperature behaviour in the Hadejia River Basin (HRB) has been assessed. The behaviour of rainfall and temperature have been used as proxies in detecting the presence of climate variability. Historical rainfall and temperature monthly data spanning thirty-six years (1980–2015) obtained from the Nigerian Meteorological Agency (NIMET) was used in this study. ANOVA and Mann-Kendall trend test was used for the data analysis. The ANOVA results showed significant variation in rainfall, maximum and minimum temperature between the stations. The Mann-Kendall trend test result shows an increasing trend in both rainfall and temperature in annual statistics, though statistically insignificant. However, the monthly trends result showed mixed results of both significant and insignificant as well as increasing and decreasing trends. The mean, standard deviation and the coefficient of variation were spatially interpolated using inverse distance weightage technique for easy comprehension. Even though the annual increasing trends result was statistically insignificant except for two out of the ten stations, it is still crucial for planning water-related activities and programs considering the sensitivity and fragility of the region to minor climatic variations.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Environmental Studies
DOI Number: https://doi.org/10.1016/j.atmosres.2019.03.023
Publisher: Elsevier
Keywords: Rainfall; Climate variability; Mann-Kendall; Semi-Arid; Nigeria
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 05 Nov 2022 15:48
Last Modified: 05 Nov 2022 15:48
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.atmosres.2019.03.023
URI: http://psasir.upm.edu.my/id/eprint/79786
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