What is La Nina and how does it occur?

La Nina A cooling of the ocean surface off the western coast of South America that occurs every 2 to 7 years when upwelling of cold, nutrient-rich water becomes enhanced. It can alter storm tracks and creating unusual weather patterns in various parts of the world American Spanish, from Spanish, the Christ child (from its onset being around Christmastime) : la, the + niña, child A La Nino event results from strengthened trade winds across the Tropical Pacific Ocean, causing anomaloously cool water to flow west from the coast of South America, where more of it is upwelled. This cold water that originates deep in the ocean happens to be nutrient-rich, which provides plenty of food for local fish and the organisms that eat them What happens to the ocean also affects the atmosphere.

Tropical thunderstorms are fueled by hot, humid air over the oceans. The hotter the air, the stronger and bigger the thunderstorms, and the lower the atmospheric pressure. As the Pacific's warmest water remains confined to the western Pacific, the relatively stationary low pressure system remains confined to that area and strengthens.

This is the "Southern Oscillation", or atmospheric, component of this oscillation Currently, it is not well understood what initiates these changes, and it is likely that it is a large combination of things. The current thinking is that it has to do with various modes low-frequency variability such as the Madden-Julian Oscillation in the tropical Pacific, Atmospheric Angular Momentum, and frictional and mountain torque distributes air.

La Nina is the cool phase of ENSO (El Nino Southern Oscillation), with the warm phase being El Nino. It features a cooling of the waters in the Tropical Pacific. In the atmosphere, the trade winds are strengthened and there is even stronger upwelling off the coast of South America, which allows cooler water to move further to the west As with El Nino, it occurs at irregular intervals every 2-7 years and can last from about 6 to 18 months.

Its effects globally vary from one location to the next, and are often quite different from those of El Nino.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.