Turks and Caicos Islands

Table 3.4.1: Observed and GCM projected changes in wind speed for Turks and Caicos Islands.
Observed
Mean
1970-99
Turks and Caicos Islands: Country Scale Changes in Wind Speed
Observed
Trend
1960-
2006
Projected changes by Projected changes by Projected changes by
the 2020s
the 2050s
the 2080s
Min Median Max Min Median Max Min Median Max
(ms -1 ) (change in
ms -1 per
decade)
Change in ms -1 Change in ms -1 Change in ms -1
A2 -0.1 0 0.2 -0.2 0.1 0.2 -0.2 0.2 0.5
Annual 7 0.34* A1B -0.1 0.1 0.1 -0.1 0.1 0.3 -0.1 0.1 0.4
B1 -0.1 0 0.2 -0.1 0.1 0.2 0 0.1 0.2
A2 -0.4 0 0.5 -0.8 -0.1 0.4 -0.6 0.2 0.6
DJF 7.4 0.56* A1B -0.3 0 0.5 -0.1 0.3 0.6 -0.3 0.1 0.3
B1 -0.3 -0.1 0.4 -0.1 0 0.2 -0.3 0.2 0.4
A2 -0.2 0 0.5 -0.5 0.3 0.8 -0.1 0.3 1.3
MAM 6.9 0.17 A1B -0.3 0.2 0.6 -0.3 0 0.6 -0.4 0.4 0.9
B1 -0.3 0.2 0.8 -0.1 0.1 0.5 -0.3 0.2 0.5
A2 -0.3 0 0.3 -0.1 0 0.2 -0.3 0.3 0.7
JJA 7.2 0.30* A1B -0.2 0 0.1 -0.1 0.1 0.3 -0.1 0.1 0.8
B1 -0.2 0.1 0.1 -0.1 0.2 0.3 -0.1 0.1 0.3
A2 -0.2 -0.1 0.2 -0.3 0 0.2 -0.3 0.1 0.5
SON 6.6 0.22* A1B -0.4 0.1 0.4 -0.3 0 0.1 -0.3 0 0.4
B1 -0.1 0.1 0.2 -0.4 0 0.3 -0.2 0.1 0.2
Table 3.4.2: GCM and RCM projected changes in Turks and Caicos Islands under the A2 scenario
20
Projected changes by the 2080s
SRES A2
Min Median Max
Change in ms -1
GCM Ensemble Range -0.2 0.2 0.5
Annual RCM (ECHAM4)
0.1
RCM (HadCM3)
0.1
GCM Ensemble Range -0.6 0.2 0.6
DJF RCM (ECHAM4)
-0.1
RCM (HadCM3)
-0.5
GCM Ensemble Range -0.1 0.3 1.3
MAM RCM (ECHAM4)
0.2
RCM (HadCM3)
0.3
GCM Ensemble Range -0.3 0.3 0.7
JJA RCM (ECHAM4)
0.4
RCM (HadCM3)
0.7
GCM Ensemble Range -0.3 0.1 0.5
SON RCM (ECHAM4)
0
RCM (HadCM3)
-0.1
3.5. Relative Humidity
Observations from the HadCRUH show statistically significant decreasing trend of 0.33% per decade in
relative humidity in SON over the period 1973-2003 in Turks and Caicos Islands. Trends in other seasons are
not statistically significant.