NOAA: Map of How El Nino Affects the World ENSO [El Nino] arises from changes across the tropical Pacific Ocean. So why does ENSO affect the climate over sizable portions of the globe, including some regions far removed from the tropical Pacific Ocean? Does the strength of ENSO matter for global impacts? ENSO affects the sea surface temperature (SST) in regions where fishing is a major […] Weather SnowBrains | May 20, 2014 1 Comment