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El Nino and La Nina
El Nino and La Nina are opposite phases of ENSO (El Nino Southern Oscillation), a coupled ocean-atmosphere oscillation in the Tropical Pacific Ocean that exerts an influence on weather throughout much of the world. Being an oscillation, it moves between these two phases every few years, triggered initially by changes in the atmospheric circulation with ocean temperature changes following. It is measured by the Southern Oscillation Index, which compares surface pressures at Tahiti and Darwin, Australia.
313 Questions
What are disadvantages of el nino?
Some disadvantages of El Niño include increased frequency and intensity of extreme weather events such as storms, floods, and droughts. This phenomenon can also disrupt fishing industries, agriculture, and ecosystems, leading to economic losses and food shortages in affected regions. Additionally, El Niño has been linked to the spread of diseases such as malaria and dengue fever due to changes in temperature and precipitation patterns.
Where is debris found on a glacier?
Debris on a glacier can be found scattered on the glacier's surface, within crevasses, or concentrated at the glacier's margins. It can include rocks, sediment, and even man-made objects that have fallen or been carried onto the glacier.
What are two changes in weather patterns caused by el nino that can cause disasters?
El Niño can cause increased rainfall leading to flooding and mudslides in some regions. It can also lead to drought conditions in other areas, resulting in crop failures, water shortages, and wildfires.
Why is el nino considered to be a troublemaker?
El Niño is considered a troublemaker because it disrupts normal weather patterns, causing extreme weather events such as heavy rainfall, flooding, and drought in various parts of the world. It can have widespread impacts on agriculture, fisheries, and infrastructure, leading to economic losses and humanitarian crises.
Can el nino de la tierra kill people?
El Niño de la Tierra, also known as the armadillo girdled lizard, is not dangerous to humans. This species of lizard is small and primarily feeds on insects. Its name comes from its ability to roll into a ball when threatened, similar to an armadillo.
El Niño is believed to create wind shear in the Atlantic Ocean, which tends to weaken hurricanes by disrupting their structure and organization. This wind shear can prevent hurricanes from intensifying or maintaining their strength as they move through the Atlantic.
During an El Niño event, the surface water in the eastern Pacific Ocean becomes warmer than usual, which can lead to changes in weather patterns worldwide. This can result in increased rainfall in some areas and droughts in others, affecting agriculture, fisheries, and water resources.
What might happen during a la Nina event?
During a La Niña event, cooler than normal sea surface temperatures occur in the central and eastern tropical Pacific Ocean. This can lead to increased rainfall in the western Pacific, drought conditions in the western United States, and an active hurricane season in the Atlantic. Additionally, La Niña can disrupt global weather patterns, affecting agriculture, fisheries, and water resources worldwide.
How often does El Nino occur and what does it affect?
I do not know how often it happens but i don know that it effects coral and the fish or other sea animals that inside and among it. The way it Effects the coral is by coral bleaching. When water temp. gets above about 70 to 75 degrees the coral goes into "survival mode". The zooxanthellea that live inside the coral produce toxins, therefore the coral must kick its mian source of food out of its boy starving istelf to death.
How does el nino affect the weather in the northeast in us?
El Niño typically results in warmer and drier conditions in the Northeastern US during the winter months. This weather pattern can lead to reduced snowfall and milder temperatures in the region.
Defferences in earthquake and el nino?
They are opposite phases of the same oscillation (El Nino Southern Oscillation) centered in the Tropical Pacific Ocean.
El Niño is a weather phenomena which tends to occur in tropical waters of the Pacific Ocean. It affects the region across the Pacific from New Guinea to South America, known as the Equatorial Pacific. During an El Niño season, which occurs on average every 2-7 years, a shift in ocean currents and winds brings warm water in a westerly direction, displacing the usual cold water that comes up from the ocean depths. As well as affecting marine life, the El Niño has an effect on weather patterns.
Under normal conditions, in the tropics warm oceans tend to be accompanied by heavy rains, resulting in heavy rains in the warm west Pacific while the cooler east Pacific receives far less rainfall. This is reversed during an El Niño, when the ocean temperature gradient from one side of the Pacific to the other weakens. Warmer than usual ocean temperatures cause droughts in the west, while the unusually warm eastern waters bring heavy rains and floods to the Pacific coast of South America, which is usually much drier.
It's all a matter of interactions between the oceans and the atmosphere. Changes in sea surface temperatures causes a shift in air pressure which, in turn, can result in climatic anomalies, such as severe droughts, flooding and even cyclones. One of the effects is that the normal circulation patterns over the Pacific are disrupted, and moisture-bearing trade winds weaken, whilst drier westerlies increase.
El Niño has a number of effects, beyond causing droughts and floods on opposite sides of the Pacific. It causes die-offs of plankton and fish and affects Pacific jet stream winds, altering storm tracks and creating unusual weather patterns in various parts of the world. Scientific investigations of this phenomenon are ongoing, and it is yet to be determined whether El Niño is oceanic or atmospheric.
La Niña is the opposite of El Nino. It involves cooler than normal sea temperatures in the same part of the Pacific Ocean. This means that weather conditions, etc, are in reverse to those seen during El Niño.
Both phenomena are phases of warming and cooling in the Tropical Pacific Ocean. They cycle through after a period of years - the number is not precise and can range considerably compared to other phenomena like this - and usually have some warning signs the year before a change.
The names are derived from Spanish: El Nino is spanish for "boy" and La Nina is spanish for "girl".
A:These weather events both refer to the movement of warm surface water (the first 200 metres deep is between 20 and 30°C) in the tropical Pacific Ocean.When there is no La Niña or El Niño, the trade winds blow the warm water to the west Pacific. This brings rainfall to the countries there.
During a La Niña event, the winds blow more strongly, increasing this rainfall. At the same time, on the eastern side of the Pacific, cold water is allowed to rise, reducing rainfall, but bringing nutrients to encourage fish and marine life.
During an El Niño event, the normal trade winds are weaker. This allows more warm water to move back towards the Americas, increasing rainfall there. The warm water blocks the nutrient-rich cold water from rising, reducing fish stocks. At the same time in the western Pacific the reduction in warm water means drier conditions and even drought to a country like Australia.
El Niño is a weather pattern that forms in the?
El Niño is a weather pattern that forms in the tropical Pacific Ocean. It is characterized by warmer-than-average sea surface temperatures, which can lead to disruptions in normal weather patterns around the world.
The term Southern Oscillation most nearly refers to?
The Southern Oscillation refers to a climate phenomenon involving the exchange of air pressure and circulation patterns between the Pacific Ocean and the atmosphere over Australia and Indonesia. It is often associated with the El Niño-La Niña cycle.
How does El Nino impact Australia?
West of the Antarctic Peninsula, the Ross, Bellingshausen, and Amundsen Sea sectors have more sea ice during El Niño. The latter two and the Weddell Sea also become warmer and have higher atmospheric pressure.
Does an el nino cause a permanent change in climate?
No, an El Niño event is a temporary climate phenomenon characterized by warmer-than-average sea surface temperatures in the equatorial Pacific Ocean. It typically lasts for several months to a year before transitioning back to normal conditions.
List three disasters that may occur when El Nino changes the weather patterns?
Three disasters that may occur when El Niño changes the weather patterns include increased flooding due to heavy rainfall in some regions, droughts and water scarcity in other regions, and more frequent and intense tropical cyclones or hurricanes.
Is El nino caused by the change of currents?
In a way, yes. El Nino - which is the warm phase of the oscillation known as El Nino Southern Oscillation - begins to get going when the atmospheric circulation in the equatorial Pacific breaks down, which causes the prevailing Trade Winds from the east to weaken or reverse. Then, wind from the west pushes warmer water from the Western Pacific to the east and up against the coast of South America, thereby changing surface currents.
Upwelling is a process in which cold, nutrient-rich water from the deep ocean rises to the surface and replaces warm surface water. The warm water is blown out to sea by prevailing winds But every 2 to 12 years, the south Pacific trade winds move less warm water to the western Pacific. As a result, surface water temperatures along the coast of South America rise. Gradually, this warming spreads westward. This periodic change in the location of warm and cool surface waters in the Pacific Ocean is called El Nino. El Nino not only affects surface waters but also changes the interaction between the ocean and the atmosphere, resulting in changes in global weather patterns.
El Nino is a condition that brings increased precipitation to the eastern Pacific Ocean basin when?
El Niño occurs when ocean temperatures in the central and eastern Pacific Ocean become warmer than usual, leading to changes in atmospheric circulation patterns. This can result in increased precipitation in the eastern Pacific Ocean basin, including countries like Peru and parts of North America.
Where was el santo nino de atocha born?
El Santo Niño de Atocha is a religious image that is particularly venerated in Mexico. However, the origin and birthplace of the Santo Niño de Atocha are rooted in the town of Atocha in Spain. The religious figure of the Holy Child of Atocha is associated with miracles and protection of travelers and prisoners.
When is next el nino due to occur?
As of late October 2010, the last (moderate) El Nino was long gone and we have a strengthening La Nina currently, which is predicted through winter and maybe even through next spring. Beyond that it is very difficult to predict the behavior of this oscillation.
Why are the greatest affects of El Nino experienced mainly in the tropics?
The greatest effects of El Niño are mainly experienced in the tropics because this phenomenon involves the warming of sea surface temperatures in the central and eastern Pacific Ocean, which can disrupt atmospheric circulation patterns. This disruption can lead to significant changes in weather patterns, including droughts, flooding, and other extreme weather events, which can have profound impacts on tropical regions.
Do plate tectonics effect el nino?
Plate tectonics can indirectly influence El Niño events by affecting the underwater topography that can alter ocean currents. However, the direct relationship between plate tectonics and El Niño is not well understood, as El Niño is primarily driven by changes in ocean temperatures in the tropical Pacific.
La Niña typically results in cooler than average sea surface temperatures in the central and eastern tropical Pacific Ocean, leading to below-average temperatures in some regions. This can result in colder and wetter conditions in certain parts of the world.
