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Table 4

Effect of temperature on citrus irrigation requirement under current (baseline) greenhouse emission scenario (360 ppm)

LocationBaseline IRR (mm)Change in annual IRR (%)
+ 1 °C+ 1.3 °C+ 1.4 °C+ 1.8 °C+ 2.2 °C
Brownsville 1,208 4.1 5.3 5.8 7.6 9.5 
Cape Town 874 4.5 5.8 6.8 8.1 9.6 
Fort Pierce 522 6.1 8.0 8.4 10.9 12.5 
Lake Alfred 573 5.1 6.5 7.2 9.4 11.5 
Mersin 804 3.1 5.2 6.6 8.5 9.5 
Nabeul 999 3.4 5.4 6.2 7.4 8.7 
Riverland 1,315 3.3 4.2 4.4 5.9 7.5 
Riverside 1,535 2.9 3.7 4.2 5.3 6.5 
Sao Paulo 353 9.1 10.8 10.8 13.6 13.3 
LocationBaseline IRR (mm)Change in annual IRR (%)
+ 1 °C+ 1.3 °C+ 1.4 °C+ 1.8 °C+ 2.2 °C
Brownsville 1,208 4.1 5.3 5.8 7.6 9.5 
Cape Town 874 4.5 5.8 6.8 8.1 9.6 
Fort Pierce 522 6.1 8.0 8.4 10.9 12.5 
Lake Alfred 573 5.1 6.5 7.2 9.4 11.5 
Mersin 804 3.1 5.2 6.6 8.5 9.5 
Nabeul 999 3.4 5.4 6.2 7.4 8.7 
Riverland 1,315 3.3 4.2 4.4 5.9 7.5 
Riverside 1,535 2.9 3.7 4.2 5.3 6.5 
Sao Paulo 353 9.1 10.8 10.8 13.6 13.3 

Results are based on combined data from all precipitation change scenarios for the baseline period.

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