Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 21 Issue 6

effect of rainfall on yam yield may also vary depending on types of yam species and seasonal properties and length of days in which the crop is permitted. R eferences R éférences R eferencias 1. Addoyi J.A (1989). Initiation of West Africa Squall Lines Meteorology and Atmospheric. 2. Adebayo, A.A (1999): Climate l1. In Adebayo and Tukur (ds) Admawa State in map. Yola: Paraclete publishers. 3. Adefolalu Do. Rainfall Climatology and Agricultural Extension service. WMO Training Lectures Series. 1993;93:3. 4. Adefolalu, D.O (1989), Precipitation, Evapotran- spiration and the Ecological Zones in 5. Adefolalu, D.O (2010). Rainfall trends in Nigeria. Theoretical and Applied Climatology. 37:205-219. 6. Adejowun, J.O., Balongun, E.E and Adejowun, S.A. (1989). On the Annual and Seasonal Pattern of Rainfall Fluctuations in Sub-Saharan West Africa. International Journal of Climatology, Vol 10. 7. Adejuwon, S.A (2004). Impacts of Climate Variability and Climatic Change on Crop Yield in Nigeria. Paper Presentation at the Stake Holders' Workshop on Assessment of Impacts and Adaptation to Climate Change (AIACC), Conference Centre ObafemiAwolowo University, lle-Ife Sept, 20-12 Retrieved from: http://www.lead-awa.org/docs/ ife%20200420paper-adejuwon. doc. (Accessed date: March 16,2004). 8. Adewuya, S.B, Fabusuyi, E.B (1986).Social Studies, Ibadan, Onibonaje Press & Book Industries (Nig) Ltd. 9. Akwa et al (2007), Geographical Perspective on Nasarawa State, 35. 10. Alexander, L. V et al (2006). Global observed changes in daily climate. 11. American. Journal, (2008), Welcome to the coldest Town on Earth Scientific American. 12. Anyadike, R.N.C. (1993). "Seasonal and Annual Rainfall Variation over Nigeria". International Journal of Climatology, Vol.13,567-580 13. Areola, O. & Ahmed, K, Irueghe, O.I, Adeleke, B.O, Leon, G.C (1992), (2nd ed), Certificate Physical and Human Geography II. Ibadan; University Press Plc.BBC (1992).English Dictionary for the Word.Harper Collins Publishers. 14. Arnfield, A.J. (2003). Two Decades of Urban Climate Research: A Review of Turbulence. 15. Assefa D. (2009). Assessment of Upland Erosion Processes and Farmer's Perception of Land 16. Ati, O.F., C.J. Stigtér and Oladipo E.O. (2012)"A Comparison Methods to Determine the Onset of the Growing Season in Northern Nigeria." International Journal of Climatology, 22:731-742. 17. Avila, et al, (2012).Model Simulated Changes in Temperature Extremes Due to Land Cover. 18. Ayoade, J.O (1984), Introduction to Climatology for the Tropics. Abiprint and Park. 19. Ayoade, J.O (2012). Annual rainfall trends and periodicity in Nigeria, Nigeria Geog. J.,16 (2), 20. Ayoade, J.O. (2003). Climate Change: A Synopsis of its nature, Causes, Effects and Management, pp. 45-69. Vantage publishers, Ibadan. 21. Ayoade, J.O.(2004). Introduction to Climatology of Tropics. Spectrum Books Limited, Ibadan Nigeria Pp 230 22. Bailey, R., Benton, T.G., Challinor, A., et al. (2015). Extreme weather and resilience of the global food system 2015. Final Project Report from the UK-US Taskforce Extreme Weather and Global Food System Resilience, The Global Food Security programme, UK. 23. Binbol N.L. (2007). Climate of Nasarawa State: Geographic perspective of Nasarawa State. A publication of the Department of Geography, Nasarawa State University, Keffi, Nigeria. Onaivi Publications, Kefti. 24. Binbol, N.L. and N.D Marcus (2005). Geography of Nasarawa State; A Sturdy of Flora and Fauna. In Akiyemi, O (Ed) Studies in the History and Culture of the people of Nasarawa State. (in press). 25. Britannica Student Encyclopedia, (2010). 26. Chang T.J., Kavas, M.L, Delleur, J. W. (1984); Modelling of Sequences of Wet and Dry Daysby Binary and Discrete Autogresssive Moving Average Process. Journal of Climate and Applied Meteorolog Change. 27. Chowdhury R.K., Beecham S. (2009). Australian rainfall trends and their relation to the Southern Oscillation index. Hydrological Processen/a-n/a 28. Chowdhury R.K., Beecham S. (2009). Temporal characteristics and variability of point rainfall: A Statistical and wavelet analysis. Conservation in Debre-Mewi Watershed, Near Lake Tana, Ethiopia. A Thesis Presented to the Faculty of Graduate School of Cornel University in Partial Fulfillment of the Requirement. 29. David, J. 2010 Weather Console retrieved from http://aze r.com.au/we ather/ WeatherCnsole/ January 2019 30. Dinku T. Ceccato P, Connor SJ. Challenges of satellite rainfall estimation over mountainou_ and arid parts of east Africa, Int. J. Remote Sens. 2011;32:5965-5979 31. Enete, C. and Ebenebe, I.N. (2009) Analysis of rainfall distribution over Enugu during the little dry season (1990-2005), J. Geog and Regional planning, 2 (7), 182 -189. Analysis of Rainfall and Temperature Patterns on Yam Yield in Lafia, Nasarawa State, Nigeria © 2021 Global Journals 1 Global Journal of Science Frontier Research Volume XXI Issue VI Year 2021 42 ( H ) Version I