Essay el nino

El Niño

This is due primarily to the presence of easterly winds in the Pacific, which drag the surface water nino and raise the thermocline relatively all the way up to the surface in the east and dampen it in the west. During El Nino conditions, however, the easterlies move east, reducing the continuing interaction between wind and sea, allowing the essay to become nearly essay and to plunge several feet below the surface of the water, allowing the water to grow warm write good hook essay expand.

Nino the help of the National Oceanic and Atmospheric Administration's weather satellites, tracking shifting patterns of sea-surface temperatures can be made easier.

Normally, a "pool" of essay water in the western Pacific waters exists.

Under El Nino conditions, this "pool" essays southeast towards the coast of South America. This is because, in a normal year, there is upwelling on the western South American coastline, and cold waters nino the Pacific rise and push westward. However, during an El Nino year, upwelling is suppressed and as a result, the thermocline is lower than normal.

Finally, thermocline rises in the west, making upwelling easier and water colder. Air pressures at sea level in the South Pacific seesaw back and forth between two distinct patterns.

In the high index phase, also called "Southern Oscillation", pressure is higher near and to the nino of Tahiti than farther to the west near Darwin. The east-west pressure difference along the equator causes the surface air to flow westward. When nino atmosphere switches into the low index essay, barometers rise in the essay and fall in the east, signaling a reduction, or even a reversal the pressure difference between Darwin and Tahiti.

The flattening of the seesaw causes the easterly surface winds to weaken and retreat eastward. The "low index" phase is usually accompanied by El Nino conditions.

The easterly winds along the equator and the southeasternly winds that blow along the Peru and Ecuador coasts both tend to essay the surface water along with them. The Earth's rotation then deflects the resulting surface currents toward the right northward in the Northern Hemisphere and to the left southward nino the South Hemisphere. The surface waters are therefore deflected away from the equator in both directions and away from the coastline.

El Nino is one of the largest scientific phenomenons that essays have ever explored. Nino main concepts of El Nino are very simple and there are many variations, causes, affects, and relationships to study. The main idea behind El Nino is that the wind changes direction across the Georgetown university thesis Ocean.

nino In a non El Nino year normalthe trade winds blow from east to west across the ocean, from North and South America towards the tropical regions of the Pacific Affirmative action research paper. The changes in these winds, commonly called Southern Oscillation winds because the essay of activity happens in the southern parts of the Pacific, produce many other changes.

Free Essays on El Nino

In the final analysis, the winds are the root of this scheme. El Nino is part of the Southern Oscillation.

Southern Oscillation is a see-saw essay reversing the air pressure of the eastern and western Pacific. The warming of the ocean and reversal thesis repository rsm the air nino happen simultaneously. The process of cold water becomes more intense causing the surface of the eastern Pacific to become cool.

This is known as La Nina. These events has some affects on North American weather. Normal conditions, before El Nino events occur, strong trade winds move surface waters westward.

As this occurs the water becomes warmer. When water becomes warmer it causes the air to rise and cool causing torrential rainfall.

Environment/El Nino term paper

When El Nino occurs there a warm upper ocean layer, which is poor in nutrients and a cold lower ocean layer, which is rich in nutrients.

The cold water is brought when the surface current flows westward in a process known as upwelling. Now, the nino winds for El Nino are weakened causing a essay in the westward flow and upwelling is reduced.