98
S. Kusangaya et al.
Table 1
(continued)
Author (s)
Temperature parameters analysed
Study Area
Conclusions
Hulme et al. (2001)
Annual mean minimum
Annual mean maximum
Diurnal temperature range
Africa
Warming through the twentieth century
has been at the rate of about 0.5°C per
century with slightly larger warming in
the June–August (JJA) and
September–November (SON) seasons
than in December–February (DJF) and
March–May (MAM)
The 6 warmest years in Africa have all
occurred, since 1987 with 1998 being the
warmest year
The long-term increase in annual
DTR in Zimbabwe is due almost entirely
to increases during the
November–February wet season; trends
during the rest of the year have been
close to zero
Temperatures during the 1990s are
higher than they were earlier in the
century and are currently between 0.2
and 0.3°C warmer than the 1961–1990
average
(continued)