Climate Stripes

Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Guinea-Bissau - - 0.89
± 0.17
1.00
± 0.17
1.85
± 0.37
1.19
± 0.82
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

Temperature Record Months and Years

Seasonal Changes

Regional Climate Variability

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

Smoothing Monthly Annual Five-year Ten-year Twenty-year
± 1.10 ± 0.50 ± 0.27 ± 0.17 ± 0.13

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.59 0.86 0.95 0.98 0.98

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

Jan Feb Mar Apr May Jun
± 1.16 ± 1.06 ± 1.10 ± 1.05 ± 0.97 ± 0.99
Jul Aug Sep Oct Nov Dec
± 0.91 ± 0.90 ± 0.81 ± 0.78 ± 0.97 ± 1.12

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature

Change in Diurnal Range