Simon Kiremi Kiunga


This study set out to discuss the phenomenon of climate change in Kenya. The study attempted to investigate the question of whether Kenya is experiencing climate change or natural climate variability. In the analysis, the study employed both empirical data and the review of relevant literature. Secondary data of average yearly temperature were subjected to simple linear regression and significance tested using the Pearson’s Product Moment method. P values of less than 0.01 were considered significant. The data were further divided into 10 year periods and plotted to observe decadal trends.

It is observed that average temperature levels in Kenya have increased by approximately 0.67 °C (2.6%)from 1980 to 2010. It was also observed that there has been decadal increases in temperature in the last two decades with the 2000s being the highest. Integrating these findings and literature material, the study findings show that Kenya may be experiencing climate change. The findings also indicate that the average decadal increases of 0.3 °Cin Kenya are in line with the projected levels of IPCC (1990) together with projections from other authors. From the discourse it is evident that the last two decades (1990-2010) have seen a rise in the intensity and frequency of droughts and floods in the country. The study also shows the lack of congruence between the main drivers of climate variability and observed climatic conditions implying that the temperature increase in the country may likely be due to global warming.


Climate change, climate variability, global warming, Kenya, temperature change, decadal change, trend

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Anyah, R.O. and Semazzi, F.H.M. (2006).Variability of East African rainfall based on multiyear REGCM3 simulations. International Journal of Climatology, 27, 357-371.

Cai, W., Borlace, S., Lengaigne, M., Rensch, P.V., Collins, M., Vecchi, G., Timmermann, A., Santoso, S., McPhaden, M. J., Wu, L., England, M.H., Wang, G., Guilyardi, E., and Jin, F. (2014). Increasing frequency of extreme El Niño events due to greenhouse warming. Nature climate change, advance online publication, 1-6.

Christensen, J.H., Hewitson, B., Busuioc, A., Chen, A., Gao, X., Held, I., Jones, R., Kolli, R.K., Kwon, W.T., Laprise, R., Magaña, R.V., Mearns, L., Menéndez, C.G., Räisänen, J., Rinke, A., Sarr, A., and Whetton, P. (2007). Regional Climate Projections. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.

Clark, C.O., Webster, P.J. and Cole, J.E. (2003). Inter-decadal variability of the relationship between the Indian Ocean zonal mode and East African coastal rainfall anomalies. Journal of Climate, 16, 548–554.

Climate Observations (2009). The North Atlantic Oscillation. Retrieved August 1, 2014, from

DFID (2009). Economic impacts of climate change: Kenya, Rwanda, and Burundi. ICPAC, Kenya and SEI Oxford Office Climate report, Kenya. Retrieved April 20, 2014, from

Downing, C., Preston, F., Parusheva, D., Horrocks, L., Edberg, O., Samazzi, F., Washington, R., Muteti, M., Watkiss, P. and Nyangena, W. (2008). Kenya: Climate Screening and Information Exchange. Retrieved July 25, 2014, from

FEWS NET (2010). A Climate Trend Analysis of Kenya. Retrieved December 17, 2013, from

Funk, C., Dettinger, M.D., Michaelsen, J.C., Verdin, J.P., Brown, M.E., Barlow, M. and Hoell, A. (2007). Warming of the Indian Ocean threatens eastern and southern African food security but could be mitigated by agricultural development. Proceedings of the national academy of sciences, 105, 11081–11086.

Goddard, L. and Graham, N.E. (1999). Importance of the Indian Ocean for simulating rainfall anomalies over eastern and southern Africa. Journal of Geophysical Research, 104, 19099-19116.

Hastenrath, S. and Polzin, D.Q. (2004). Dynamics of the surface wind field over the equatorial Indian Ocean. Meteorological Society, 130, 503-517.

Hernes, H., Dalfelt, A., Berntsen, T., Holtsmark, B., Otto, N.L., Selrod, R., Aaheim, A. (1995). Climate strategy for Africa. CICERO Report 1995:3, University of Oslo. Retrieved August 1, 2014, from

Hulme, M., Doherty, R., Ngara, T., New, M. and Lister, D. (2001). African climate change: 1900–2100. Climate research, 7, 145–168.

Hurrell, J.W. (1995) Decadal trends in the North Atlantic Oscillation: Regional temperatures and precipitation. Science, 269, 676-679.

Hurrell, J.W. and Loon, V.H. (1997) Decadal variations in climate associated with the North Atlantic Oscillation. Climate Change, 36, 301-326.

Indeje, M., Semazzi, F.H.M. and Ogallo, L.J. (2000). ENSO signals in East African rainfall seasons. International journal of Climatology, 20, 19-46.

IPCC (1990). The IPCC Scientific Assessment 1990. Retrieved July 10, 2014, from

IPCC (2000). Special Report on Emission Scenarios (SRES). Retrieved June 2, 2014, from

IPCC (2001). Climate Change 2001 - IPCC Third Assessment Report. Retrieved August 1, 2014, from

IPCC (2007). Projections of future changes in climate. Retrieved May 28, 2014, from

IPCC (2013). Climate Change 2013: Physical science basis. Retrieved May 4, 2014, from

IPCC (2014). Climate Change 2014: Impacts, Adaptation, and Vulnerability. Retrieved August 1, 2014, from

Klein, S.A., Soden, B.J. and Lau, N.C. (1999). Remote sea surface temperature variations during ENSO: Evidence of a tropical atmospheric bridge. Journal of Climate, 12, 917-932.

KMD (2013). Climatological data. Retrieved July 6, 2014, from

Lamb, P.J. and Peppler, R.A. (1987). North Atlantic oscillation: Concept and an application. Bulletin American Meteorological Society, 68, 1218–1225.

Latif, M., Dommenget, D., Dima, M., Grötzner, A.J. (1999). The Role of Indian Ocean Sea Surface Temperature in Forcing East African Rainfall Anomalies during December-January 1997/98. Climate, 12, 3497-3504.

McHugh, M. and Rogers, J. (2001). North Atlantic Oscillation Influence on Precipitation Variability around the Southeast African Convergence Zone. Journal of climate, 14, 3631-3642.

Meehl, G.A. and van Loon, H. (1979). The seesaw in winter temperatures between Greenland and Northern Europe. Part III: Teleconnections with lower latitudes. Monthly weather review, 107, 1095-1106.

Meehl, G.A., Stocker, T.F., Collins, W.D., Friedlingstein, P., Gaye, A.T., Gregory, J.M., Kitoh, A., Knutti, R., Murphy, J.M., Noda, A., Raper, S.C.B., Watterson, I.G., Weaver, A.J. and Zhao, Z.C. (2007). Global Climate Projections. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.

Mude, A., Ouma, R., Van de Steeg, J., Kaiuki, J., Opiyo, D. and Tipilda, A. (2007). Kenya adaptation to climate change in the arid lands: Anticipating, adapting to and coping with climate risks in Kenya - Operational recommendations for KACCAL. ILRI Research Report 18. Nairobi, Kenya: International Livestock Research Institute.

Mutai, C.C., Ward, M.N. and Colman, A.W. (1998). Toward the prediction of the East Africa short rains based on sea-surface temperature–atmosphere coupling. International Journal of Climatology, 18, 975–997.

NASA (2013). GISS Surface Temperature Analysis. Retrieved July 24, 2014, from

New, M., Hewitson, B., Stephenson, D.B., Tsiga, A., Kruger, A., Manhique, A., Gomez, B., Coelho, C.A.S., Masisi, D.N., Kululanga, E., Mbambalala, E., Adesina, F., Saleh, H., Kanyanga, J., Adosi, J., Bulane, L., Fortunata, L., Mdoka, M.L. and Lajoie, R. (2006). Evidence of trends in daily climate extremes over Southern and West Africa. Journal of geophysical research, 111, no page number. Retrieved June 15, 2014, from

Nicholson, S.E. (1996). A review of climate dynamics and climate variability in Eastern Africa. The limnology, climatology and paleoclimatology of the East African lakes (T.C. Johnson and E.O. Odada, eds.). Gordon and Breach Publications, Amsterdam, 25-56pp.

PCCS (2013). Understanding climate change and climate variability. Retrieved July 31, 2014, from

Ringius, L., Downing, T.E., Hulme, M., Waughray, D. and Selrod, R. (1996). Climate change in Africa-issues and regional strategy. CICERO Report No. 1996:8, CICERO, Oslo.

Rogelj, J., Meinshausen, M. and Knutti, R. (2012). Global warming under old and new scenarios using IPCC climate sensitivity range estimates. Nature climate change, 5, 248-256.

Saji, N.H., Goswami, B.N., Vinayachandran, P.N. and Yamagata, T. (1999). A dipole mode in the tropical Indian Ocean. Nature, 401, 360-363.

Schreck, J.C. and Semazzi, F.H.M. (2004). Variability of the recent climate of eastern Africa. International Journal of Climatology, 24, 681-701.

Semazzi, F.H.M. and Indeje, M. (1999). Inter-seasonal variability of ENSO rainfall signal over Africa. African meteorological society, 4, 81-94.

Shongwe, M.E., Oldenborgh, V. and Aalst, V. (2010). Projected changes in mean and extreme precipitation in Africa under global warming, Part II: East Africa. Journal of climate, 24, 3718-3732.

Shongwe, M.E., Van Oldenborgh, G.J. and Van Den Hurk, B.J.J.M. (2009). Projected Changes in Mean and Extreme Precipitation in Africa under Global Warming. Part I: Southern Africa. Journal of climate, 22, 3819-3897.

Trenberth, K.E., Dai, A., Rasmussen, R.M. and Parsons, D.B. (2003).The changing character of precipitation. American meteorological society, 84, 1205–1217.

Tyson, P.D. (1986).Climatic Change and Variability in Southern Africa. Oxford University Press, Cape Town, 205pp.

Vuuren, D.P.V., Edmonds, J., Kainuma, M., Riahi, K., Thomson, A., Hibbard, K., Hurtt, G.C., Kram, T., Krey, V., Lamarque, J., Masui, T., Meinshausen, M., Nakicenovic, N., Smith, S.J. and Rose, S.K. (2011). The representative concentration pathways: an overview. Climatic Change, 109, 5-31.

Washington, R. and Pearce, H. (2012). Climate Change in East African Agriculture: Recent Trends, Current Projections, Crop-climate Suitability, and Prospects for Improved Climate Model Information. CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS). Copenhagen, Denmark. Retrieved June 14, 2014, from

Webster, P.J., Moore, A.M., Loschnigg, J.P. and Leben, R.R. (1999). Coupled ocean-atmosphere dynamics in the Indian Ocean during 1997-98. Nature, 401, 356-360.

Wolff, C., Haug, G.H., Timmermann, A., Sinninghe, S.J.D., Brauer, A., Sigman, D.M., Cane, M.A. and Verschuren, D. (2011). Reduced inter-annual rainfall variability in East Africa during the last ice age. Science, 333, 743-747.

World Climate Report (2008). Surface temperature history. Retrieved August 15, 2014, from


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