Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Bulgaria 0.31
± 0.16
0.61
± 0.16
0.74
± 0.16
0.86
± 0.11
2.01
± 0.25
4.85
± 0.24
Europe 0.37
± 0.21
0.63
± 0.15
0.88
± 0.08
1.09
± 0.10
2.69
± 0.23
2.94
± 0.26
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
± 2.83 ± 1.04 ± 0.48 ± 0.35 ± 0.28

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.47 0.62 0.85 0.92 0.94

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

Jan Feb Mar Apr May Jun
± 4.27 ± 4.08 ± 3.57 ± 2.64 ± 2.38 ± 2.09
Jul Aug Sep Oct Nov Dec
± 1.90 ± 2.06 ± 2.33 ± 2.78 ± 3.37 ± 3.81

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature