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Climate change and global warming which is also known as a change in Earth’s overall climate or rising temperature have taken centre stage in international concerns, several fora and treaties have been observed with a view of stemming trend, in rising temperatures. This study evaluated ten years of maximum and minimum annual temperature of Warri in Nigeria between (2005 and 2015) to determine trends and identified extreme fluctuation in temperature. Data used for this study were sourced from the Nigerian Meteorological Agency’s Zonal Office, Warri. An objective method for determining temperature extreme has been used. Least square linear regression equation has been used to estimate temperature that would be equalled or surpassed 1%, 5% and 10% of the hours at any given location during the warmest and coldest months of the year. These equations are based on an index calculated from the three readily available parameters; the mean monthly temperature, the mean daily maximum temperature for the month and the mean daily minimum temperature for the month. The warmest month in Warri was March with a mean monthly temperature of 33.9 while the coldest month was July with mean monthly of 25.8.
Katz RW, Brown BG. Extreme events in a changing climate: Variability is more important than averages. Climatic Change. 1992;21:289–302.
Ciais Ph, Reichstein M, Viovy N, Granier A, Og´ee J, Allard V, Aubinet M, Buchmann N, Bernhofer Chr, Carrara A, Chevallier F, De Noblet N, Friend AD, Friedlingstein P, Gr¨unwald T, Heinesch B, Keronen P, Knohl A, Krinner G, Loustau D, Manca G, Matteucci G, Miglietta F, et al. Europe-wide reduction in primary productivity caused by the heat and drought in 2003. Nature. 2005;437(7058):529–534.
Patz JA, Campbell-Lendrum D, Holloway T, Foley JA. Impact of regional climate change on human health. Nature. 2005;438:310–317.
Easterling DR, Meehl GA, Parmesan C, Changnon SA, Karl TR, Mearns LO. Climate extremes: Observations, modeling, and impacts. Science. 2000;289:2068–2074.
Jones PD, Jones RN, Nicholls N, Sexton DHM. Global temperature change and its uncertainties since 1861, Geophys. Res. Lett. 2001;28:2621–2624.
Frich P, Alexander LV, Della-Marta P, Gleason B, Haylock M, Klein Tank AMG, Peterson T. Observed coherent changes in climatic extremes during the second half of the twentieth century. Clim. Res. 2002;19:193–212.
Kostopoulou E, Jones P. Assessment of climate extremes in Eastern Mediter-ranean, Meteorol. Atmos. Phys. 2005;89: 69–85.
Moberg A, Jones PD, Lister D, Walther A, Brunet M, Jacobeit J, Alexander LV, Della-Marta PM, Luterbacher J, Yiou P, Chen D, Klein Tank AMG. Indices for daily temperature and precipitation extremes in Europe analyzed for the period 1901–2000, J. Geophys. Res. 2006;111:D22106.
Brown SJ, Caesar J, Ferro CAT. Global changes in extreme daily temperature since 1950, Journal Geophys. Res. Atmos. 2008;113:D05115.
Hansen J. Global temperature trend: 2005 summation GISS surface Temperature Analysis, NASGoddard institute for space studies (GISS) and Columbia University Earth institute. New York http://data giss. Nasa. Gov/gis temp/2005. Retrieved 4/10/2008; 2005.
Alexander LV, Zhang X, Peterson TC, Caesar J, Gleason B, Klein Tank AMG, Haylock M, Collins D, Trewin B, Rahimzadeh F, Tagipour A, Ambenje P, Rupa Kumar K, Revadekar J, Griffiths G. Global observed changes in daily climate extremes of temperature and precipitation. J. Geophys. Res. Atmos. 2006;111: D05109.
Parmesan C, Changnon SA, Karl TR, Mearns LO. Climate extremes: Observations, modeling, and impacts. Science. 2000;289:2068–2074.
Afangideh A, Okpiliya F, Ekanem E. The changing annual rainfall and temperature average in the humid tropical city of Uyo, Southern Nigeria. African Journal of Environmental Pollution and Health. 2005;4(2):54-61.
Garcıa-Herrera R, D´ıaz J, Trigo RM, Hernandez E. Extreme summer temperatures in Iberia: Health impacts and associated synoptic conditions. Ann. Geophys. 2005;23:239–251.
Susan BMD, Yi-An Ko, Stephanie S, Beth H, Julie C. World health day: The hazards of global warming to your health; human health, influenced by a complex system of biological, social, economic, political and geographic factors, is particularly vulnerable to the effects of global warming; 2008.
Paul I. Tattelman, Arthur J. Kantor. Atlas of probabilities of surface temperature extremes: Part I, Northern Hemisphere, Environ, Res, Pap, No. 557, AFGL-TR-76-0084; 1976a.
Paul I. Tattelman, Arthur J. Kantor. Atlas of probabilities of surface temperature extremes: Part II, Southern Hemisphere, Environ, Res, Pap., No. 558, AFGL-TR-77-0001; 1976b.
Paul I. Tattelman, Arthur J. Kantor. A method for determining probabilities of surface temperature extremes. Air force Geophysics Laboratory, Hunscom AFB, Mass, 01731; 1977.