T 5.07 Recap and Glossary

Global circulation models (GCMs), developed in the 1990s, are used to make predictions and projections about the future viability of coffee farming.
GCMs divide the world into a three-dimensional grid that extends from the bottom of the oceans up to the outer atmosphere.
Computer processing power since the 1990s has allowed the cell sizes to become smaller, which allows for more localised predictions.
Where GCMs lack regional accuracy, advances in this type of technology have introduced Representative Concentration Pathways (RCPs).
Using this technology C Bunn et al., (2014) project a 49% loss of climate-compatible land by 2050 for growing the arabica species.