Analysis of Rainfall and Temperature Variability over Nigeria

Analysis of Rainfall and Temperature Variability over Nigeria

Akinsanola Akintomide Afolayan

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Akinsanola A.A

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Ogunjobi K.O

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Federal University of Technology

Analysis of Rainfall and Temperature Variability over Nigeria

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Abstract

This study investigates rainfall and temperature variabilities in Nigeria using observations of air temperature (oC) and rainfall (mm) from 25 synoptic stations from 1971-2000 (30years). The data were analyzed for the occurrences of abrupt changes in temperature and rainfall values over Nigeria while temporal and spatial trends were also investigated. Statistical approach was deployed to determine the confidence levels, coefficients of kurtosis, skewness and coefficient of variations. Analysis of air temperature indicated that in the first decade of 1971-1980 anomalies between -0.2 and -1.6 were predominant, in the second decade of 1981-1990, only five stations (Lokoja, Kaduna, Bida, Bauchi and Warri) shows positive anomaly while greater portion of the country were normal with evidence of warming in the third decade of 1991-2000. Results further indicated that there have been statistically significant increases in precipitation and air temperature in vast majority of the country. Analyses of long time trends and decadal trends in the time series further suggest a sequence of alternately decreasing and increasing trends in mean annual precipitation and air temperature in Nigeria during the study period.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

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How to Cite This Article

Akinsanola Akintomide Afolayan. 2014. \u201cAnalysis of Rainfall and Temperature Variability over Nigeria\u201d. Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management GJHSS-B Volume 14 (GJHSS Volume 14 Issue B3): .

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GJHSS Volume 14 Issue B3
Pg. 1- 17

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Journal Specifications

Crossref Journal DOI 10.17406/GJHSS

Print ISSN 0975-587X

e-ISSN 2249-460X

Keywords

coefficient of skewness kurtosis and variations rainfall temperature

Submission ReceivedDecember 9, 2013
Peer Review Double Blind
Handling Editor
Accepted December 31, 2013
Published January 15, 2014

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Issue date

June 11, 2014

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Article Matrices

Total Score: 102

Country: Nigeria

Subject: Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management

Authors: Akinsanola A.A, Ogunjobi K.O (PhD/Dr. count: 0)

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