El Nino El Nino has been a reoccurring phenomenon for centuries. Man has only started to realize how much of the worlds weather is effected by it. The term El ESSAY PLAN Global Warming As Causes Of El Nino-Southern Oscillation Phenomena The advancements in various sectors in the life of human beings, which often exploit natural resources without control, directly or indirectly lead to changes in the environment sustained effect unconsciously towards the emergence of a disaster El Nino refers to a body of unusually warm water astride the equator by South America, La Nina describes a sea that's abnormally cool. Two independent computer models that forecast El Nino see on the horizon a pronounced cooling of the same area of the Pacific
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El nino essay, R, el nino essay. Winds move east to west over the Pacific, el nino essay. The east flows of the trade winds carries the warm surface waters to the west, and bring rainstorms to Indonesia and northern Australia. To the coast of Ecuador and Peru, warm surface water is pulled west, and the cold water beneath pulls up to replace it. This is called an upwelling.
An El Nino happens in intervals of years. El Niño, A Non-technical Description An El Niño is a temporary change in the climate of the Pacific ocean, in the region around the equator. You can see its effects in both the ocean and atmosphere, generally in Northern Hemisphere winter. Typically, the el nino essay surface warms up by a few degrees celsius, el nino essay.
At the same time, the place where hefty thunderstorms occur on the equator moves eastward. Although those might seem like small differences, it nevertheless can have big effects on the world's climate. During an El Niño event, westerly winds at the western end of the basin permit warm water to flow eastward and trade winds weaken. The storm zone and atmospheric convection move with the warm water resulting in heavy rainfall and flooding along coastal areas of western South America. During a La Niña event, trade winds grow stronger and the warm pool shrinks, which results in a colder, drier climate off the coast of America.
Atmospheric convection is restricted to the western end of the basin and abundant rain falls over Indonesia. El Nino can last from a few months up to two years.
It can be predicted a year before it happens. The warming of the ocean water begins in the Pacific and moves towards the coast of South America. During a period of time that may last a year. A full blown El Nino starts in early December. The last main point of El Nino is the weather that follows due to the changes in water temperature. Precipitation follows the warmer water, whichever direction it flows. During the normal wind patterns the rainfall in the southern Pacific islands is consistent and creates their tropical identity.
middle of paper Normally, a "pool" of warm water in the western Pacific waters exists. Under El Nino conditions, this "pool" drifts southeast towards the coast of South America. This is because, el nino essay, in a normal year, there is upwelling on the western South American coastline, and cold waters of the Pacific rise and push westward.
However, during an El Nino year, upwelling is suppressed and as a result, el nino essay, the thermocline is lower than normal. Finally, thermocline rises in the west, making upwelling easier and water colder. How it is formed? And we must also examine what is meant by the term global warming? Firstly hurricanes, otherwise known as tropical-cyclones, are formed over warm ocean waters of at least El nino essay must also be a high Coriolis Effect present such as there is just north and south of the equator.
Moran, Hurricanes begin as smaller storms called tropical disturbances, if the storm experiences a sufficient loss in surface air pressure coinciding with a strengthening sustained wind the storm is then upgraded to a tropical depression. The warmth of the waters carried by the Gulf Stream from the equator as it reaches the North Atlantic prevents excessive ice formation in the winter as well as warms the atmosphere, resulting in relatively warmer climate conditions in comparison to those of the North Pacific Schmittner et al.
In the grand scheme of ocean currents, el nino essay, the cold bottom waters from the North Atlantic end up flowing along the floor of the Atlantic Basin until it meets with the Antarctic cold currents in the Southern Hemisphere and gets reintegrated into the global conveyor belt, el nino essay.
There are signs that the Atlantic Meridional Overturning Circulation could be tied to ancient long term climate changes, such as the Younger Dryas, which was a brief abrupt period of climate change about 14, years ago in which the global temperatures dropped to near glacial conditions Younger Dryas, It is generally accepted that slowing of the AMOC was the cause of this global cooling.
However, the exact cause for the flow reduction is still in question. According to NOAA, during this time frame rainfall over Indonesia reduces el nino essay rainfall increases over the tropical Pacific Ocean, el nino essay. The combination of El Nino and the Southern Oscillation is the year to year changes in sea surface temperatures, rainfall, surface air pressure and atmospheric circulation that happen over the equatorial Pacific Ocean.
El Nino and La Nina are opposite phases of ENSO. Home Page El Nino. El Nino Satisfactory Essays. Open Document. Essay Sample Check Writing Quality. El Nino This morning, before writing this essay, I spent a considerable amount of time watering my wilting garden. Meanwhile, the New York Yankees have been rained out for their third consecutive game. And out in California? Rain, no rain, rain, no rain Why are we suffering such severe weather this summer? In case you have not heardwe are experiencing a weather phenomenon called El Nino.
What is El Nino, and How Long Will This Last? According to Michael McPhaden, director of the Tropical Atmosphere Ocean Array, an El Nino is born when west-blowing Pacific trade winds relax or reverse. Without the wind at its back, seawater that typically piles up on the jagged western edge of the Pacific -- around Indonesia, the Philippines and Australia -- slides back toward the Americas.
The sliding water moves in what scientists call Kelvin waves, el nino essay. That causes the initial warming," said McPhaden. At the same time, the Pacific reacts to the lost wind by building another series of waves under water. Calledthey roll west toward Indonesia, the Philippines and Australia.
Eventually, the series of waves strikes the coasts of those countries. Then, it reverses and heads back toward South America, traveling along the equator. Sometimes an extremely warm event can develop that last for much longer time periods. A strong El Nino developed in and lasted until We are apparently experiencing one of these stronger El Ninos, as this one has lasted for nearly six months. But how long will this last? And then what? The Onset of La Nina After an El Nino event, weather conditions usually return to normal, el nino essay.
However, in some years the trade winds can become extremely strong and an abnormal accumulation of cold water can occur in the central and eastern Pacific. This event is called La Nina, el nino essay. Where El nino essay Nino refers to a body of unusually warm water astride the equator by South America, La Nina describes a sea that's abnormally cool.
Two independent computer models that forecast El Nino see on el nino essay horizon a pronounced cooling of the same area of the Pacific. Sometimes, the cold water is just enough to return ocean temperatures to normal.
Not always. there will be a cold effect sometime next year Get Access. Best Essays. Ocean Fertilization Words 4 Pages 6 Works Cited. Ocean Fertilization. Read More. Satisfactory Essays. El Nino and La Nina Words 2 Pages. El Nino and La Nina.
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Sep 13, · In the Eastern states, El Nino results in increased coastal storms during winter and spring. During warm seasons El Nino affects hurricane development. It favors more Eastern Pacific Hurricanes and lesser Atlantic hurricanes. Prediction of El Nino patterns is not sufficient and such information is only profitable if it is used to minimize disasters El Nino El Nino has been a reoccurring phenomenon for centuries. Man has only started to realize how much of the worlds weather is effected by it. The term El El Nino refers to a body of unusually warm water astride the equator by South America, La Nina describes a sea that's abnormally cool. Two independent computer models that forecast El Nino see on the horizon a pronounced cooling of the same area of the Pacific
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