For example in a study conducted by Purdue and Indiana Universities, in the Midwestern United States,
maize< Zea mays L.> yields were projected to decrease in Illinois. while soybean and soft red winter wheatyields were projected to increase. however, there is great uncertainty in these projections because the GCMs simulate climate change on the scale of degrees of latitude and the weather can be coupled to the soils and crops of a region