104
S. Kusangaya et al.
Table 2
(continued)
Author (s)
Period of analysis
Study area
Degree of change (Conclusion)
Love et al. (2010)
1930–2005
Limpopo Basin, Zimbabwe The annual average of maximum daily
temperatures showed a significantly increasing
trend
High inter-annual variability of rainfall was
noted
Total annual rainfall, days of heavier rainfall
and number of longer dry spells showed a
significant drying trend for the whole time
series
80% of stations showed a change point to a
drier regime from around 1980 characterised by
fewer wet days and increased number of dry
spells
Mazvimavi (2010b)
1892−1940
1992−2000
Zimbabwe
Rainfall in Zimbabwe has high inter-annual
variability and currently any change due to
global warming is not yet statistically detectable
The Mann-Kendal Test did not identify a
significant trend at all the 40 stations and,
therefore, there is no proof that the average
rainfall at each of these stations has changed.
All the other stations revealed no changes over
time in, both the extreme low and high rainfall
at the annual interval. Therefore, there is no
evidence that the frequency and severity of
droughts has changed during the 1892 to 2000
period
(continued)
S. Kusangaya et al.
Table 2
(continued)
Author (s)
Period of analysis
Study area
Degree of change (Conclusion)
Love et al. (2010)
1930–2005
Limpopo Basin, Zimbabwe The annual average of maximum daily
temperatures showed a significantly increasing
trend
High inter-annual variability of rainfall was
noted
Total annual rainfall, days of heavier rainfall
and number of longer dry spells showed a
significant drying trend for the whole time
series
80% of stations showed a change point to a
drier regime from around 1980 characterised by
fewer wet days and increased number of dry
spells
Mazvimavi (2010b)
1892−1940
1992−2000
Zimbabwe
Rainfall in Zimbabwe has high inter-annual
variability and currently any change due to
global warming is not yet statistically detectable
The Mann-Kendal Test did not identify a
significant trend at all the 40 stations and,
therefore, there is no proof that the average
rainfall at each of these stations has changed.
All the other stations revealed no changes over
time in, both the extreme low and high rainfall
at the annual interval. Therefore, there is no
evidence that the frequency and severity of
droughts has changed during the 1892 to 2000
period
(continued)