Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Gambia - - 0.87
± 0.18
1.01
± 0.18
1.86
± 0.39
1.32
± 0.60
Senegal - - 0.87
± 0.18
1.02
± 0.18
1.87
± 0.34
1.55
± 0.56
Western Africa - - 0.92
± 0.20
0.86
± 0.13
2.02
± 0.31
3.09
± 0.54
Africa - - 0.83
± 0.20
0.92
± 0.12
1.99
± 0.21
2.49
± 0.45
Northern Hemisphere - 0.79
± 0.16
0.96
± 0.10
1.19
± 0.05
2.56
± 0.20
3.56
± 0.20
Global Land 0.43
± 0.18
0.79
± 0.13
0.91
± 0.08
1.11
± 0.03
2.16
± 0.11
2.78
± 0.13

Regional Climate Variability

Difference from Global Land Average ( °C, 95% range )

Smoothing Monthly Annual Five-year Ten-year Twenty-year
± 1.23 ± 0.55 ± 0.29 ± 0.21 ± 0.15

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.55 0.83 0.94 0.97 0.97

Variability in Monthly Means ( °C, 95% range )

Jan Feb Mar Apr May Jun
± 1.34 ± 1.30 ± 1.35 ± 1.25 ± 1.14 ± 1.10
Jul Aug Sep Oct Nov Dec
± 0.88 ± 0.92 ± 0.83 ± 0.88 ± 1.16 ± 1.32

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature