TREND ANALYSIS OF MONTHLY AND ANNUAL RAINFALL PROFILE IN KATSINA AND ITS ENVIRONS
Abstract
This study aimed at examining the trend analysis of monthly and annual rainfall profile in Katsina and its environs. The specific objective was to determine the monthly and annual trends in rainfall for the area. Rainfall data from 1971 to 2010 was sourced from the archive of the Nigerian Meteorological Agency (NiMets) Katsina Airport. The data was used to characterize rainfall trends for monthly and annual total which are the determinants of rainy season using Microsoft excel tool (2016) and SPSS 23.0 version. The 5-year running mean showed that below average rainfall was experienced from the early 1970s up to 2000. Findings also showed that above average rainfall is being experienced from the year 2000 afterward. Findings further indicated that there was a significant decrease in rainfall amount in the month of June, little change in the month of July and substantial increase in the months of August and September. The study concludes that there is an apparent increase in rainfall amounts in recent years. The study recommends that there is need to improve information delivery and foster the use of climate information to inform decision making, using seasonal climate forecasts to inform farmers and other stakeholders to avoid surprises by taking right decisions. Additional functioning synoptic weather stations should be provided to complement the existing ones in the study area with distance from each other not more than 100km to conform with WMO standard. This will enhance network of data collection and accurate seasonal rainfall prediction.
References
Abaje, I.B., Ati, O.F. and Iguisi, E.O. (2012) Recent Trends and Fluctuations of Annual Rainfall in the Sudano-Sahelian Ecological Zone of Nigeria: Risks and Opportunities. Journal of Sustainable Society, 1(2), 44-51.
Abaje, I.B., (2016) Assessment of Rural Communities Perception, Vulnerability and Adaptation to climate change in Kaduna state, Nigeria. Unpublished Ph. D.Thesis, Department of Geography, Ahmadu Bello University, Zaria- Nigeria
Adefolalu, D.O (1986) Rainfall Trend in Nigeria., in Theorethical and Applied climatology. 37
Adebayo, A.A, Oruonye, E.D (2013). An Assessment of Climate Change in Taraba State,Nigeria. Nigerian J. Trop. Geography 4(2):602-612.
Anyadike, R. N. C. (1993). Seasonal and Annual Rainfall Variations over Nigeria. International Journal of Climatology, 13, 567-580.
Ati, O.F (2002). A comparison of method of with empirical ones for calculating onset of growing season in kano, Zaria geographer, 15(1) p. 80- 87.
Ati, O. F. (2006). Rainfall Characteristic in Drought -Prone Sudano-Sahelian Zone of Nigeria. Unpublished Ph.D Dissertation. Department of Geography, Ahmadu Bello University, Zaria, Nigeria.
Effeh, E. J.( 2000) Peasant Adjustment to Drought: The case of Jibia Local Government Area, Katsina. Unpublished PhD. Thesis, Ahmad Bello University Zaria
Ati, O.F, Iguisi, E.O. and Afolayan, J.O. (2007). Are we Experiencing Drier Conditions in the Sudano-sahelian Zone of Nigeria? Journal of Applied Science Resources., 3(12):1746-1751. Retrieved May 31, 2008 from http://www/insinet.net/jasr/2007/1746-1751.pdf
Ati, O. F., Muhammed, S. Q. & Ati, M. H. (2008). Variations and Trends in Annual Rainfall Amounts and the Onset of the Rainy Season for Kano for 87 Years (1916-2002). Journal of Applied Sciences Research, 4(12), 1959-1962. Retrieved may 16, 2009, from http://www.insinet.net/jasr/2008/1959-1962.pdf
Ati, O. F., Stigter, C.J., Iguisi, E.O. & Afolayan, J.O. (2009). Profile of Rainfall Change and Variability in the Northern Nigeria, 1953-2002. Research Journal of Environmental and Earth Sciences, 1(2), 58-63.
Isma’il and Oke, (2012). Statistical and trend analyses of rainfall in Sokoto. Retrieved from http://www.interesjournals.org/IRJESTI.International Research Journal of Engineering Science, Technology and Innovation (IRJESTI) 1(6) pp. 161-174,
Oladipo, E.O. (1989). The Persistent of Wet and Dry Days During Growing Season in Maiduguri, Nigeria . the Zaria Geographer, 13, 1-8
Olaniran, O. J. and Sumner, G.N. (1990). Long-Term Variations of Annual and Growing Season Rainfalls in Nigeria. Theoretical Applied. Climatology, 41:41 – 53
Olaniran, O. J. (1992). An Analysis of Rainfall Trends in Nigeria on the Inter Annual and Multi-year Time Scales; Staff/PG Seminar, Dept. of Geography, University of Ilorin, 14 PP.
Online Nigeria [ON] (2003) Nigeria: Physical Setting- Katsina State. Retrieved January,30 2003. From www.onlinenigeria.com/link/katsina adv.asp?blurb=289
Trenberth, K. E, Jones, P. D, Ambenje, P, Bojariu, R, Easterling, D, Klein Tank, A, Parker, D, Rahimzaden, F., Renwick, J.A. Rusticucci, M., Soden, B., and Zhai, P. (2007) Observation: Surface and Atmospheric Climate Change. In: Solomon , S., Quin, Manning, M, Chen , Z., Marquis, M,.Averyt, K.B, Tignor M., and Miller, H.L (Eds) .
Climate Change 2007: the Physical Science Basis, pp 235- 336.Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. United Kindom and Newyork , N Y: Cambridge University Press. Retrieved February, 5 2009 from http://www.ipcc.ch/pdf/assessment-report/ar4/wg l/ar4-wg l-chapter2.pdf
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