Assuming that the Earth's global average surface temperature increases by 7°C in 2100 as compared to 1880, what will be the yield of cereals per hectare in the world in 2100, according to the Food and Agriculture Organization (FAO)?
Measurements of global average surface temperature have increased since the 1880 (Climate.gov, Center for Climate and Energy Solutions). The outcome will be determined using data as reported by the FAO (FAO). In the "COUNTRIES" box, select "REGIONS" and select "World + (Total)." For "ELEMENTS," select only "Yield." In the "ITEMS" box, select "ITEMS AGGREGATED" and select "Cereals, Total + (Total)," which is under "Crops Primary > (List)." For "YEARS," select whatever years for which you want to see data. Finally, click either "Show Data" or "Download Data" at the bottom and see the "Value" column. The values returned are hectograms per hectare, which is one-tenth of a tonne per hectare. In 2020, the yield of cereals per hectare was 4.07 tonnes.
NOTE 3 August 2022: One degree Celsius is equal to 1.8 degrees Fahrenheit, meaning that 7°C = 12.6°F.