Table 1. Definition of confidence level in this study.

Confidence Level	Criteria
Increase with high confidence	IR*>1 in at least 7 scenarios
Increase with medium confidence	IR>1 in 6 scenarios
Increase with low confidence	IR>1 in 5 scenarios
Decrease with low confidence	IR<1 in 5 scenarios
Decrease with medium confidence	IR<1 in 6 scenarios
Decrease with high confidence	IR<1 in at least 7 scenarios
Increase/decrease mixed	Other conditions except for all above cretiria

^*IR (impact factor; see section 2.3) is an indicator for analyzing the impacts of climate change on a variable (e.g. crop production), and it is defined as the ratio of the variable in a future time period (i.e. 2030s or 2090s) to that in the baseline period (i.e. 1990s).’