El Nio and La Nia - Research Paper Example

It is for this reason that during the El Niño events, the easterly trade winds are intense and the global weather patterns are often the opposite of those of La Niña. Based on theory, the competing and ocean feedbacks are the responsible elemental forces that are said to drive the direction of the warming (Goddard and Dilley 651). If this theory holds true, then scientists are looking forward to the point by which the La Niña will have to be propagated in the same course or direction, but there are scientific findings that reveal that it did not (Dong 3373).

This was even made clear when Dong argued that there are existing anomalies in the asymmetric nature of El Niño and La Niña sea surface temperature (SST). On the other hand, modern technology and understanding in climatology reveal the concept or idea about Southern Oscillation Index (SOI). This measurement is based on the idea linked to the surface water pressure. The negative SOI reveals that El Niño takes place when the surface pressure is higher somewhere in Darwin and Low at Tahiti, but La Niña occurs when the SOI is higher or positive, and this is the moment when the normal equatorial water is found to be cooler and in a wide spread across the central and eastern equatorial Pacific (Dong 3373).

The SOI was found to be a cycle, within the period of at least three to five years. On the other hand, some scientists are convinced with the idea that El Niño and La Niña are significant components of the natural process prior to the evolution of life on earth. For this reason, these phenomena are considered to take place in the cycle as evolutionary part for the continuing existence of life. Another theory remarkably suggests that the sun, which is the major source of energy and life on earth is the main reason as to why there exist cold and warm energy that produce wind.

This turbulence caused by the wind, both cold and hot,