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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
Does el nino play a part in tornado development?
El Niño does not directly cause tornadoes. However, it can create atmospheric patterns that increase the likelihood of severe weather events, including tornadoes, in certain regions. These patterns can lead to unstable conditions in the atmosphere, which are a key ingredient for tornado formation.
What kind of weather pattern is caused by a strong El Nino?
The El Nino phase can cause an increase in number and intensity of hurricanes in the Atlantic Basin. It can cause severe floods in places such as southern California, and droughts in other locations.
How have computers helped map el nino?
Computers have helped map El Nino by eliminating the background noise and improving the quality of the patterns in the foreground. Doing these things have allowed researchers to have a better visual understanding of how El Nino works and the ways in which it effects weather all over the world.
What ocean current effect Long Beach weather?
The California Current, a cold ocean current that flows southward along the western coast of North America, influences the weather in Long Beach. It helps moderate temperatures by keeping them cooler in the summer and milder in the winter. This current also affects coastal fog patterns and the marine ecosystem in the region.
The opposite of an El Nino, La Nina is formed by cooler-than-normal subsurface waters in the central and eastern tropical Pacific. On average, it occurs every 3-6 years, but atmospheric changes, effects of industrialised nations and many other factors are gradually changing the frequency and length of La Nina.
La Nina is characterized by unusually ocean temperatures?
La Niña is a climate pattern that is characterized by cooler-than-normal sea surface temperatures in the central and eastern Pacific Ocean. This can lead to specific weather patterns around the world, such as increased rainfall in some regions and drought in others. La Niña events typically occur every few years and can impact global weather for several months to a year.
What are the benefits of el nino?
El Nino refers to the warm current that flows southward along the coasts of Ecuador and Peru between January and March, marking the end of the local fishing season. This results in a shift in ocean temperatures and atmospheric conditions in the tropical Pacific, which disrupts weather around the world.
El Nino climatic conditions occur every few years, and they are not predictable. Usually
though not always El Nino brings more rain and higher temperatures. Also, warm ocean currents come farther north and all kinds of tropical fish can be caught in the waters far north of where they can usually be found. The climate pattern is important, because it can change the weather of the United States particularly in California and southern states. It has also been noticed that severe droughts in India occur when there is El Nino.
How do scientists tell when an el nino will occur?
Scientists can tell when an El Nino will occur if in the tropical Pacific Ocean, a network of buoys will indicate a change in temperature, currents and winds in the equatorial band. These collected data are evaluated by a computer designed to predict El Nino.
The relationship between ocean circulation and atmospheric?
Global wind patterns and ocean currents determine the climate and weather of the world. Convection, which is the transfer of heat between liquids and gases, occurs between the ocean water and the air, giving the air varying degrees of temperature.
Did el nino affect the dust bowl?
El Niño did not directly cause the Dust Bowl, but it may have exacerbated the conditions that led to it. El Niño can influence precipitation patterns, potentially leading to periods of drought, which coupled with poor land management practices at the time, could have contributed to the severity of the Dust Bowl.
What does Divino nino de colombiamean?
"Divino niño de Colombia" translates to "Divine Child of Colombia." It refers to the religious devotion to the child Jesus in Colombia, where he is seen as a protector and bringer of miracles.
How many crew member the ship la Nina have?
The ship La Niña was one of Christopher Columbus's ships, and it is estimated to have had a crew of around 24 to 26 members during its voyages to the Americas.
What is the opposite of El Nino?
The opposite of El Nino is La Nina.
El Nino is a time of warming water in the Pacific Ocean, and changes in weather patterns throughout the world.
La Nina is a time of cooling water, and a reverse of weather phenomena.
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During an El Nino winds drag ocean water causing what?
During an El Nino event, the weakened trade winds allow warm surface waters in the western Pacific Ocean to move eastward towards South America. This can cause an increase in sea surface temperatures, changes in weather patterns, and disruptions in marine ecosystems.
El Niño was first discovered by fishermen off the coast of Peru in the 1600s, who noticed unusually warm water temperatures and reduced fish catches during certain times of the year. The term "El Niño" refers to the periodic warming of sea surface temperatures in the central and eastern tropical Pacific Ocean.
What is La Nina and how does it occur?
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 thoes of El Nino.
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What phenomenon is sometimes known as the northern light?
There is a sequence of events in the formation of the Northern Lights. It all starts at the sun:
- A sudden burst of energized particles from the Sun is called a solar flare.
- These charged particles leave the sun as the solar wind.
- When these particles reach Earth, they are attracted by the North and South Magnetic Poles and move towards them.
- The ionosphere is the highest level of the atmosphere, more than 50 miles (80 km) above the earth.
- In the ionosphere these charged particles collide with atoms of oxygen and nitrogen.
- The oxygen and nitrogen atoms become ionized, or excited, and they give off a burst of colored light. This burst can last from less than a second (green) to almost two minutes (red). This is similar to the way light is created in neon tubes.
- Oxygen gives off green light usually, or sometimes browny-red.
- Nitrogen gives off blue or red.
- If the collisions take place high up then oxygen gives off red. Lower down oxygen gives green and nitrogen shines blue and red. Lower down still oxygen is quiet and nitrogen still gives off blue and red.
Interestingly enough natives in the northern regions state that the lights are sometimes accompanied by a hissing noise.
El Nino is quasi-periodic and its duration will vary. Typically it will remain in one mode (El Nino is the warm phase, La Nina the cool) for at least 9 months persisting to up to two years.
What country does El Nino affect most?
El nino is a weather pattern that can negatively impact the weather of the areas it affects. El nino typically impacts Mexico and the United States. The part of the world impacted is the Northern and Western Hemispheres.
El Niño is a climate phenomenon characterized by unusually warm ocean temperatures in the equatorial Pacific Ocean. This warming can lead to changes in weather patterns around the world, including heavy rainfall, droughts, and more frequent hurricanes. In satellite images, El Niño can appear as a large area of warmer sea surface temperatures in the central and eastern Pacific Ocean.
How will an el nino affect Jacksonville fl?
During an El Niño event, Jacksonville, FL typically experiences warmer temperatures and increased chances of above-average rainfall. This can result in higher humidity levels and an increased risk of flooding in the region. However, the specific impacts can vary depending on the strength and duration of the El Niño event.
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How do El Nino and La Nino affect North America?
In North America, typically, winters are warmer than normal in the upper Midwest states and Canada, while central and southern California, northwest Mexico and the southeastern U.S., are wetter than normal. Summer is wetter in the intermountain regions of the U.S. The Pacific Northwest states, on the other hand, tend to be drier during an El Niño. During a La Niña, by contrast, the Midwestern U.S. tends to be drier than normal. El Niño is associated with decreased hurricane activity in the Atlantic, especially south of 25º N; this reduction is largely due to stronger wind shear over the tropics.
What effects does El Niño have on a place or country?
El Niño can bring heavy rainfall and flooding in some regions, while causing drought conditions in others. This can impact agriculture, water supply, and lead to increased risk of natural disasters such as landslides and wildfires. Additionally, El Niño can disrupt fisheries and influence weather patterns worldwide.
What is the El Nino Southern Oscillation?
El Nino Southern Oscillation (ENSO) is an coupled ocean-atmosphere cycle that oscillates between its cold phase (La Nina) and warm phase (El Nino) every few years. Typically, the trade winds blow from west to east in the Tropical Pacific Ocean, and this allows cold water to be upwelled off the coast of South America. When these trade winds weaken or even reverse (this is the southern oscillation element - the atmospheric component), warmer water from the western Pacific is pushed eastward, suppressing the upwelling and greatly increasing the temperature of the water throughout the Tropical Pacific. La Nina, the cold phase, is just the opposite. It can be considered an enhanced "normal" situation where the trade winds are even stronger and even more cold water is upwelled, which is also able to move further west and cool the water somewhat throughout the Tropical Pacific.
It turns out that the atmospheric and oceanic conditions in this part of the world are particularly influential on the atmospheric conditions in much of the rest of the world. Droughts and flooding are the two most prominent manifestations of each phase, though which regions experience will vary.
