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 2

Consequences of deforestation/land-use change on the seasonal mean temperature (°C) 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	%ΔCM1	T-s	𝑃<𝑇	S
ERA-40
DJF	22.71	22.78	22.79	0.07	−0.497	0.6212	Not	0.08	−0.985	0.3284	No
MAM	20.67	20.85	20.88	0.18	−0.759	0.4526	Not	0.21	−0.123	0.9020	No
JJA	18.48	18.67	18.75	0.19	−1.154	0.2569	Not	0.27	−2.099	0.0401	Yes
SON	21.21	21.33	21.38	0.02	−1.236	0.2141	Not	0.17	−1.735	0.0871	No
ECHAM4
DJF	23.29	23.30	23.32	0.01	0.1216	0.5482	Not	0.04	−0.131	0.4477	No
MAM	21.40	21.42	21.44	0.02	0.0814	0.5323	Not	0.09	−0.084	0.4665	No
JJA	19.36	19.50	19.73	0.14	−0.239	0.1094	Not	0.72	−3.195	0.001	Yes
SON	22.31	22.37	22.44	0.06	−0.481	0.3158	Not	0.26	−1.003	0.1593	No