《Climate variability and change over southern africa》.pdf

Climate variability and change over southern Africa: impacts and challenges 1 2 Alec Sithole * and Cyril T. F. Murewi Departments of 1Physics and 2Mathematics, Midlands State University, P. Bag 9055, Gweru, Zimbabwe been observed over the past few decades (Gonzalez, Abstract 2002). In this paper, the influence of climate variability and Over most parts of southern Africa, the EI Nino change on the environment was studied over southern Southern Oscillation (ENSO), which greatly contributes Africa using ground-based and remotely sensed data. A to inter-annual rainfall variability (Rautenbach Smith, ~ ~ time series analysis of rainfall and temperature anomalies 2001), manifests itself as either EI Nino or La Ninia ~ indicated that there was a high rainfall and temperature events. The E1 Nino events, which usually result in variability in the region. The influence of global tele- delayed and low rainfall, have become more frequent connections on rainfall patterns over southern Africa over the past three decades. With most climate model showed that in some areas there was a spatial variation in estimates indicating rainfall decreases of up to 20% in their strength, increasing from west to east. Maps of NDVI, many areas over southern Africa (Barnett, Dessai from 19