Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Hunan - - 0.69
± 0.21
0.53
± 0.14
0.94
± 0.27
2.21
± 0.62
China - - 0.89
± 0.20
1.12
± 0.13
2.09
± 0.23
2.10
± 0.39
Eastern Asia - 0.78
± 0.20
0.93
± 0.19
1.23
± 0.13
2.19
± 0.24
1.64
± 0.38
Asia - 0.82
± 0.18
1.00
± 0.15
1.35
± 0.09
2.57
± 0.24
3.13
± 0.25
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
± 1.91 ± 0.67 ± 0.39 ± 0.33 ± 0.28

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.41 0.75 0.89 0.91 0.92

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

Jan Feb Mar Apr May Jun
± 2.47 ± 3.06 ± 2.18 ± 1.92 ± 1.54 ± 1.27
Jul Aug Sep Oct Nov Dec
± 1.25 ± 1.24 ± 1.46 ± 1.47 ± 1.85 ± 2.28

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature