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  Sci. Res. Impact.  

  4(2): 020-030, May 2018

 

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Scientific Research and Impact, Vol. 4(2), pp 020-030 May 2018

doi:1014412/SRI2018.030

(ISSN 2315-5396) 2018 Science Park Journals

Full Length Research Paper

 

 

 

Rainfall variability at decadal time scale and Temperature trend in two distinct Agro-ecological zones of Lesotho

Nkheloane, T1,A. O. Olaleye*and R. Mating

University of Lesotho, Roma 180, Lesotho

 

 

 

 Abstract

 

Abstract: The rainfall pattern in Lesotho is very erratic, unpredictable and it is driven by the regional expression of global atmospheric circulation systems over southern Africa and moderated by the topographic position of Lesotho (1 388 m to 3 482 m above mean sea level) on the southern African plateau. The goal of this study was add to the already existing knowledge on rainfall variability and trends in Lesotho by examining climate data (rainfall and temperature) for two locations situated separately in two agro-ecological zones (AEZs) of Lesotho and highlight some few impacts that may be induced by the observed variability. Results showed that rainfall distribution was highly variable for a 10 year period (1997 – 2007) on both sites with a projected decline for next decade (2007 – 2017). Temperature trend showed a decreasing trend for minimum temperature in Thaba-Putsoa and an increasing trend for T’sakholo. Maximum temperature was observed to follow the same trend on both sites. It was thus concluded that results agree with earlier work denoting inconsistent and uneven rainfall distribution and temperature trends towards a warmer climate over Lesotho. Therefore the avoidance of drawbacks associated with variable rainfall and increasing temperature may involve government to provide farmers with advanced climate and weather information that improves outcomes and seasonal forecasting should be dynamic, starting with a threemonthpre-planting seasonal forecast and becoming progressively finer, providing weekly and even daily forecasts during critical periods to aid operational decision making at farm level.

 Key words: Rainfall, temperature, Lesotho, variability.


 

 

                                                                                                       

 

 

            

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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