Climate Impacts of Deforestation/Land-Use Changes in Central South America in the PRECIS Regional Climate Model: Mean Precipitation and Temperature Response to Present and Future Deforestation Scenarios

Table 1

Consequences of deforestation/land-use change on the seasonal mean precipitation (mm day⁻¹) averaged over the model domain. ΔΦ_CM1 corresponds to the difference CONTROL map minus MAP1 map. Similarly, ΔΦ_CM2 is the difference CONTROL map minus MAP2 map. T-s is the Student’s t-test, and 𝑃>𝑇 is the probability of occurrence. S denotes the significance, if “yes”, the differences are significant, if “no”, then the differences are not significant. Upper half corresponds to ERA40 runs and the lower half to ECHAM4.

	CONTROL	MAP1	MAP2	ΔΦCM1	T-s	𝑃>𝑇	S	ΔΦCM2	T-s	𝑃>𝑇	S
ERA-40
DJF	6.14	6.09	6.05	−0.05	0.932	0.3570	Not	−0.09	0.665	0.5082	No
MAM	4.09	4.08	4.07	−0.01	0.185	0.8538	Not	−0.02	0.431	0.6676	No
JJA	1.85	1.82	1.78	−0.03	0.386	0.7011	Not	−0.07	0.947	0.3472	No
SON	4.40	4.39	4.32	−0.01	0.106	0.9156	Not	−0.08	1.334	0.2615	No
ECHAM4
DJF	5.87	5.84	5.83	0.03	0.5492	0.2922	Not	0.04	0.9227	0.1795	No
MAM	3.47	3.45	3.42	0.02	0.4732	0.3187	Not	0.05	1.0221	0.1552	No
JJA	1.46	1.45	1.44	0.01	0.2814	0.7791	Not	0.02	0.4478	0.3277	No
SON	4.25	4.22	4.19	0.03	0.6010	0.2748	Not	0.06	1.4025	0.0824	No