International Scholarly Research Notices

Research Article

Characterization of the Wine Grape Thermohydrological Conditions in the Tropical Brazilian Growing Region: Long-Term and Future Assessments

Table 3

Average differences for the wine grape growing season values of air temperature (ΔT_GS), precipitation (ΔP_GS), vineyard water requirements (ΔVWR_GS), and vineyard water index (ΔVWI_GS) between the baseline conditions (1961–1990) and the projected years of 2020, 2050, and 2080, in the Brazilian Northeastern region, considering the reference cv. Syrah: IPCC A2 (a) and B2 (b) emission scenarios.

(a) A2 emission scenario


Pruning date	(°C)			(mm)			(mm)			(—)
Pruning date	2020	2050	2080	2020	2050	2080	2020	2050	2080	2020	2050	2080

January	1.5	3.0	5.6				31.8	68.9	170.9
February	1.6	3.1	5.5				32.3	69.3	156.7
March	1.6	3.1	5.3				27.6	60.6	132.9
April	1.5	3.0	5.0				25.9	53.1	108.9
May	1.4	2.8	4.6				22.7	44.6	86.1
June	1.3	2.6	4.1				22.8	42.0	71.7
July	1.3	2.6	4.0				19.8	40.4	72.4
August	1.3	2.7	4.2				19.7	43.1	89.5
September	1.5	2.9	4.5				19.3	46.3	112.5
October	1.5	2.9	5.0	13.4			19.1	48.5	119.3
November	1.5	3.0	5.4	59.9			28.6	62.4	155.8	0.07
December	1.5	3.0	5.6	75.4			29.3	65.9	186.1	0.09

Average	1.5	2.9	4.9				24.9	53.8	121.9

(b) B2 emission scenario


Pruning date	(°C)			(mm)			(mm)			(—)
Pruning date	2020	2050	2080	2020	2050	2080	2020	2050	2080	2020	2050	2080

January	1.3	2.6	4.0				27.8	58.2	107.9
February	1.4	2.8	3.6				29.2	60.8	86.6
March	1.3	2.6	3.4				23.7	50.5	68.0
April	1.2	2.5	3.4				21.8	43.0	65.3
May	1.2	2.3	3.2				19.5	36.7	54.2
June	1.1	2.2	2.9				20.0	35.2	49.8
July	1.3	2.1	2.8				16.5	31.9	46.9
August	1.1	2.2	3.0				16.4	34.5	53.8
September	1.3	2.5	3.0				16.3	37.8	50.4
October	1.2	2.5	3.6				14.9	54.2	78.2
November	1.3	2.7	4.0		22.9		25.7	37.4	100.9
December	1.4	2.8	3.7		11.5		26.4	57.7	93.5

Average	1.3	2.5	3.4				21.5	44.8	71.3