5 Climate Change Impact on Hydrological Regimes …
97
Table 1
(continued)
Author (s)
Temperature parameters analysed
Study Area
Conclusions
Warburton et al. (2005b)
Annual mean minimum
Annual mean maximum
Summer mean maximum
temperature
Winter mean minimum temperature
Extreme temperatures
southern Africa n (ZA, SW, LS)
Stations in the Western Cape,
KwaZulu-Natal, Northern Cape and
Northern Province indicate a warming of
at least 0.2°C in 1980–2000 in
comparison to 1950–1970 period
A cooling of winter means suggests that,
although the annual means of
temperature may be increasing, the
winter temperatures on average may be
reducing
There is an overall decrease in variability
of, both daily minimum and maximum
temperatures between 1950–1970 and
1980–2000
Kruger and Shongwe (2004)
Annual mean minimum
Annual mean maximum
Mean annual temperature
Mean seasonal temperature
South Africa
23 (of 26) stations showed positive
trends in annual mean maximum
temperature, 13 statistically significant
with trends higher for central stations
than those closer to the coast
21 stations showed positive trends in
annual mean minimum temperatures
with 18 statistically significant
The annual average temperature data
series of 24 of the stations showed
positive trends with 18 of them
significant
Trends of mean seasonal temperature
showed that temperature trends are not
consistent throughout the year
(continued)