In France and Turkey this is reduced to zero per cent under the lowest emission scenario, and in Australia, it drops to four per cent.

Argentina and, Brazil are the three biggest producers of soybean. With a high emission scenario, 70 per cent and nine per cent of Argentinian and Brazilian soybean area, respectively, would be affected by reductions in rainfall. In both cases this drops to zero under a low emissions scenario.

China and India are the world’s two biggest rice producers globally and are among the countries predicted to have wetter conditions for all four crops included in the study, even in a scenario with low levels of emissions. However, curtailing greenhouse gas emissions from high to low levels reduces the area affected from 11 per cent down to six per cent for China, and 80 per cent to 17 per cent for India.

The study warns that without significant reductions in greenhouse gas emissions, patterns of increased precipitation in high latitudes, including areas in North America and Europe, could emerge as early as the 2020s and in some areas may have already altered due to climate change.

Patterns of decreased precipitation in areas such as the Mediterranean, western Mexico, Chile, South Africa and Australia could emerge by the 2050s.

It has been suggested that more precipitation may mean higher crop production.