Climate Features of Dakhla Oasis
97
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
20
25
30
35
40
45
50
55
60
1
31 61 91 121 151 181 211 241 271 301 331 361
Vapor pressure (kPa)
Humidity (%)
Day of year
Humidity
Vapor pressure
Fig. 5 Seasonal change of daily averaged humidity and vapor pressure averaged from 2007 to 2016
in Dakhla Oasis. Some parts are modified after Kimura et al. (2020)
4.5 Climatic Differences Between the Dakhla
and Kharga Oases
The values for various climate factors in the Dakhla and Kharga Oases for 2007 to
2016 are presented in Table 2. The temperature, wind speed, and ET p were lower
in Dakhla Oasis, as compared with Kharga Oasis. Of particular note, the ET p in
Dakhla Oasis was about 400 mm (1.1 mm/day) lower compared with that in Kharga
Oasis, which means that the evapotranspiration demand is low and that relatively
more irrigation water can be saved for plant production in Dakhla Oasis.
Table 2 Climatic differences
between Dakhla and Kharga
Oasis using the data from
2007 to 2016
Dakhla
Kharga
T avg(°C)
24.4
25.9
T max(°C)
32.9
33.4
T min(°C)
15.9
17.8
Hu (%)
33.0
33.7
e (hPa)
11.0
11.0
U avg (m/s)
1.9
3.0
U max (m/s)
3.9
5.4
ETp (mm)
1781
2177