Regional Climate Change: Sierra Leone

Climate Stripes

Mean Rate of Change ( °C / Century )

Since:	1760	1810	1860	1910	1960	1990
Sierra Leone	-	-	0.95 ± 0.17	0.97 ± 0.16	1.82 ± 0.28	2.12 ± 0.97
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
	± 1.00	± 0.48	± 0.28	± 0.17	± 0.12

Correlation to Global Land Average (R value)

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	0.64	0.87	0.95	0.98	0.99

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

Jan	Feb	Mar	Apr	May	Jun
± 1.13	± 0.91	± 0.88	± 0.87	± 0.79	± 0.86
Jul	Aug	Sep	Oct	Nov	Dec
± 0.89	± 0.83	± 0.76	± 0.69	± 0.78	± 0.90

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature

Change in Diurnal Range