Weather phenomena such as El Niño affect up to two-thirds of the world's harvests

Large-scale weather cycles, such as the one related to the El Niño phenomenon, affect two-thirds of the world's cropland. In these so-called climate oscillations, air pressure, sea level temperature or other similar factors fluctuate regularly in areas far apart in a way that causes rain and temperature patterns to shift significantly.

The El Nino and La Nina effects oscillate in relation to low and high systems which moderated by the jet streams. Jet streams themselves have been moderated by climate change making the roller coaster of weather more extreme and likely the El Ninos as well.