There are a various causes for climate change. One of them is El-Nino. El nino is a series of changes in the climate affecting parts of the Pacific region every few years. While climate change appears to make big El Niños more frequent, it is also true that El Niños return the favor by giving a short-term stimulus to atmospheric global warming. This is because the spread of warm waters across the tropical Pacific results in a release of heat energy from the oceans into the atmosphere. El Niño causes the Pacific jet stream to move south and spread further east. During winter, this leads to wetter conditions than usual in the Southern U.S. and warmer and drier conditions in the North. El Niño also has a strong effect on marine life off the Pacific coast. Although El Niño's strongest impacts are felt around the equatorial Pacific, they can affect weather around the world by influencing high and low pressure systems, winds and precipitation. And as the warmer ocean waters release excess energy (heat) into the atmosphere, global temperatures rises.