ABSTRACT
The best work done to date to illuminate future patterns of warming couples ocean and air general circulation models of the globe to project regional climates, based upon the assumption that the ambient concentration of CO2 equivalent gases will double from the level before the Industrial Revolution, causing the radiative forcing of the atmosphere to increase. The impact of the global warming on agriculture stems from effects on the process of photosynthesis. In very broad outline, the Calvin cycle is one in which plants draw moisture and nutrients from the soil. Atmospheric CO2 passes through stomata in the leaves and combines with water to produce carbohydrates (sugar, starches and cellulose). The crop simulation models, project the impact of warming, depending on the agricultural product. The speed of wheat, corn and soybean crop development increases with temperature, causing yield decreases and higher water demand.
