Agriculture is extremely vulnerable to climate change and the research underlying this report provides detailed estimates on the impacts of climate change on agricultural production, consumption, prices, and trade, and also estimates the costs of adaptation. It uses a global agricultural supply-and-demand projection model (IMPACT 2009) linked to a biophysical crop model (DSSAT) of the impact of climate change on five important crops: rice, wheat, maize, soybeans, and groundnuts (see box). The report assesses climate-change effects on food security and human well-being using two indicators: per capita calorie consumption and child malnutrition numbers and concludes that climate change will negatively affect human well-being.
