Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Northern Africa - 0.69
± 0.17
0.82
± 0.15
1.05
± 0.11
2.44
± 0.28
4.03
± 0.56
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
± 1.01 ± 0.42 ± 0.20 ± 0.15 ± 0.12

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.75 0.91 0.98 0.99 0.99

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

Jan Feb Mar Apr May Jun
± 1.41 ± 1.51 ± 1.41 ± 1.03 ± 0.95 ± 0.83
Jul Aug Sep Oct Nov Dec
± 0.88 ± 0.81 ± 1.01 ± 1.05 ± 1.19 ± 1.27

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature