5 Climate Change Impact on Hydrological Regimes …
109
Table 2
(continued)
Author (s)
Period of analysis
Study area
Degree of change (Conclusion)
Hulme et al. (2001)
1900–2000
Southern Africa
More moderate drying of 5 to 15% per century
noted along the Mediterranean coast and over
large parts of Botswana and Zimbabwe and the
Transvaal in southeast Africa
Nicholson (2001)
1970–1989
Africa
Rainfall percent departure from the long-term
mean
Southern Africa - North (1970–79)
+6% and
(1980–1985)
−5%
Southern Africa–South (1970–79)
+10% and
(1980–1985)−7%
Southern Africa–West (1970–79)
+26% and
(1980–1985)
−12%
Richard et al. (2001)
1950–1988
South Africa
Examination of many parameters (number of
rain days, mean and median rainfall by rain day
and values of the 90th and 95th percentile)
revealed shifts in daily rainfall distribution from
approximately the 1970s. The south-central part
of the country (former Transkeï) seems to have
experienced increased intense rainfall,
accompanied by decreased number of rain days,
while the north-eastern part shows decreased
values of the 95th percentile