Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Greenland - 0.90
± 0.45
1.22
± 0.66
0.78
± 0.39
3.57
± 0.75
10.88
± 1.74
Denmark - 0.89
± 0.44
1.21
± 0.64
0.78
± 0.38
3.56
± 0.74
10.69
± 1.69
North America - 0.82
± 0.23
1.02
± 0.18
1.11
± 0.11
2.90
± 0.19
4.72
± 0.28
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
± 3.28 ± 1.54 ± 1.04 ± 0.93 ± 0.78

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.27 0.60 0.76 0.77 0.76

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

Jan Feb Mar Apr May Jun
± 4.48 ± 4.86 ± 3.96 ± 2.83 ± 2.10 ± 1.54
Jul Aug Sep Oct Nov Dec
± 1.52 ± 1.43 ± 1.62 ± 2.39 ± 2.79 ± 3.87

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature