5 Climate Change Impact on Hydrological Regimes …
105
Table 2
(continued)
Author (s)
Period of analysis
Study area
Degree of change (Conclusion)
Morishima and Akasaka (2010) 1979–2007
southern Africa
Annual rainfall has decreased over the African
continent from the equator to 20ºS, resulting in
shorter and weaker rainy season in southern
Africa
The spatial and temporal structures of trends in
rainfall have apparent seasonality with rainfall
in Angola, Zambia and Namibia tending to
decrease from December to March
There are no apparent trends over the
continental region south of 20ºS, except in the
north-eastern part of South Africa
Aguilar et al. (2009)
1955–2006
Zimbabwe
Zimbabwe showed no significant increases in
rainfall over the last half-century
Shongwe et al. (2009)
1941–1997
1901–2000
southern Africa
Study investigates likely changes in mean and
extreme rainfall over southern Africa
More severe droughts in the southwest of
southern Africa and enhanced rainfall farther
north in Zambia, Malawi and northern
Mozambique
This study shows that changes in the mean
rainfall vary on relatively small spatial scales in
southern Africa and differ between seasons
(continued)