El Nio-Southern Oscillation - Assignment Example

 The ENSO can also cause droughts and other weather problems that can severely impact the areas that rely on fishing for their living.

When El Nino is at work, the Pacific Ocean will have higher surface pressures, and when El Nina (the smaller part of El Nino) is in effect, the surface pressures are lower.

No one really understands why El Nino happens, but they know it has something to do with the trade winds. They know that different types of trade winds work together and do different things to create the problems that El Nino can cause. For example, the Walker circulation is actually a model of airflow that creates a vertical motion in the tropics. They circulate because of the different heat distribution between what is felt on land and what is felt in the ocean. These two work together to circulate this vertical flow.

Kelvin waves are warm also and they create a warm water pool across South America. This means that the Pacific Ocean acts as a heat reservoir and it can create a different type of weather depending on the other circumstances that happen on a global level.