West Bengal

Climate Stripes

Mean Rate of Change ( °C / Century )

Since:	1760	1810	1860	1910	1960	1990
West Bengal	-	0.68 ± 0.17	0.67 ± 0.19	0.75 ± 0.15	1.03 ± 0.37	2.24 ± 0.58
India	-	0.67 ± 0.18	0.66 ± 0.20	0.85 ± 0.15	1.44 ± 0.30	2.30 ± 0.43
Southern Asia	-	0.73 ± 0.19	0.80 ± 0.18	1.16 ± 0.12	2.29 ± 0.25	3.70 ± 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

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
	± 1.30	± 0.55	± 0.34	± 0.28	± 0.23

Correlation to Global Land Average (R value)

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	0.61	0.84	0.93	0.95	0.96

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

Jan	Feb	Mar	Apr	May	Jun
± 1.48	± 1.72	± 1.64	± 1.61	± 1.36	± 1.24
Jul	Aug	Sep	Oct	Nov	Dec
± 0.88	± 0.68	± 0.90	± 1.05	± 1.30	± 1.30

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature

Change in Diurnal Range