What is El Ni o, La Ni a and the greenhouse effect?

El Niño: El Niño, also known as the El Niño Current, is a climate phenomenon caused by the eastward movement of the Walker Circulation after the interaction between the ocean and the atmosphere over a large area of the Pacific Equatorial Belt. Normally, the monsoon currents in the tropical Pacific region move from the Americas to Asia, keeping the Pacific surface warm and bringing tropical rainfall around Indonesia.

But this pattern is disrupted every 2 to 7 years, reversing the direction of winds and ocean currents, and the heat flow from the surface of the Pacific Ocean turns eastward towards the Americas, taking with it tropical rainfall and creating the so-called "El Niño".

Ranilla is the opposite of El Niño.

The greenhouse effect, also known as the "flower house effect", is a common name for the atmospheric insulation effect. The atmosphere can make the solar short-wave radiation reach the ground, but the long-wave thermal radiation released from the surface is absorbed by the atmosphere, so that the temperature of the surface and the lower atmosphere increases, because its effect is similar to that of a greenhouse for cultivating crops, so it is called the greenhouse effect. If this effect were not present in the atmosphere, then the surface temperature would drop by about 3 degrees or more.

On the other hand, if the greenhouse effect continues to intensify, the global temperature will continue to rise year by year. Since the Industrial Revolution, the amount of heat-absorbing greenhouse gases such as carbon dioxide emitted into the atmosphere by human beings has increased year by year, and the greenhouse effect of the atmosphere has also increased, which has caused a series of serious problems such as global warming, which has attracted the attention of all countries in the world.

Increased carbon dioxide contributes to climate warming.

Difference Between La Niña and El Niño:

1. The nature is different.

La Niña is a condition in which the waters of the central and eastern Pacific Ocean become abnormally cold. El Niño is a warm current, an anomalous natural phenomenon in the Pacific Ocean.

2. The reasons for the formation are different.

La Niña's southeast trade winds blow the sun-scorched waters from the surface to the western Pacific Ocean, causing the western part to increase sea level by nearly 60 centimeters compared to the eastern Ocean.

El Niño in the west coast of South America, the eastern part of the South Pacific, from south to north flow a famous Peruvian cold current, from November to March of the following year is the summer of the southern hemisphere, the water temperature in the southern hemisphere generally rises, the equatorial warm current flowing westward is strengthened.

3. The impact on the climate is different.

The impact of La Niña on the climate, strong cold waves and strong winds in the north are frequent, while rainfall continues to be low and temperatures remain high.

The impact of El Niño on climate is most pronounced in the circum-equatorial Pacific region. During El Niño years, droughts occur in Indonesia, Australia, the South Asian subcontinent and northeastern Brazil, while rainfall occurs from the equatorial central Pacific to the west coast of South America. El Niño can have devastating effects, potentially triggering floods in Latin America, drought in Australia and crop failures in India.

4. The time of occurrence is different.

El Niño Cycle: El Niño is a cyclical natural phenomenon that occurs approximately every 7 years. Through the study of global climate, scientists believe that El Niño is not an isolated natural phenomenon, but an aspect of global climate anomalies.

In a normal year, the Pacific coast of the west coast of Peru is controlled by a cold ocean current and has a large natural fishing ground. In the event of a climate anomaly, the cold ocean currents in the eastern Pacific Ocean are replaced by a warm ocean current.

La Niña cycle: In the second year of an El Niño, La Niña usually occurs, and sometimes La Niña lasts for two or three years.

First, the nature is different.

1. La Niña: Abnormal cooling of the central and eastern Pacific Ocean.

2. El Niño: The unusually continuous warming of sea temperatures in the tropical oceans of the eastern and central Pacific Ocean has changed global climate patterns, resulting in drought in some areas and excessive rainfall in others.

Second, the cause of the loss is different.

1. Causes of La Niña: The La Niña phenomenon is related to the increase of SST and the weakening of trade winds in the central and eastern equatorial Pacific, and the Lania phenomenon is related to the cooling of SST and the strengthening of trade winds in the central and eastern equatorial Pacific. Thus, La Niña is actually a product of the interaction between the tropical ocean and the atmosphere.

2. Causes of El Niño: The occurrence of El Niño events is related to the change of the Earth's rotation speed, and since the 50s of the 20th century, the Earth's rotation speed has destroyed the average acceleration distribution in the past 10 years. Abnormal fluctuations for 4-5 years.

Some of the stronger El Niño annual averages occur in years when there is a major turning point in the Earth's rotation rate, especially in years when the rotation is slow.

Third, the impact is different.

1. Impact of La Niña phenomenon: Affected by the La Niña event in the equatorial Pacific Ocean and the anomaly of the Eurasian atmospheric circulation, since January 10, 2008, there have been four large-scale cold, snow and freezing weather processes in southern China, which are rare in history.

According to the latest forecast of the National Climate Center, the La Niña phenomenon will last until the summer of 2008, which will bring meteorological disasters such as spring and summer drought, high forest fire risk level, increased sandstorms in northern China, and increased probability of regional flooding in summer.

2. Impact of El Niño: The most obvious impact is that El Niño events lead to a significant increase in global precipitation compared to normal years. This has led to frequent flooding in the Pacific Rim countries of the Central and Eastern Pacific and South America, while severe droughts in India, Indonesia and Australia will affect many crops in the world.

Hello, I have helped you find the result; El Niño and La Niña are two common phenomena of atmospheric circulation changes. The differences between them are as follows:1

Different causative factors: The Erchen rock-atmosphere phenomenon is the result of ocean-atmosphere interaction in the tropical Pacific Ocean, and its main driver is the increase in Pacific sea temperature. La Niña, on the other hand, is a relatively inverse phenomenon of ocean-atmosphere interaction, which is mainly caused by low surface water temperatures in the Pacific Ocean, as opposed to El Niño.

2.Varying scope of impact: El Niño causes climate anomalies worldwide, particularly in regions such as South America, Southeast Asia, and Australia, and its effects include, but are not limited to, heavy rainfall, floods, droughts, and storms.

La Niña, on the other hand, typically affects rainfall on the Pacific coast of South America, Central America and the Caribbean, Indonesia and East Africa. 3.The formation cycle is different:

El Niño usually occurs every 2-7 years or so and lasts from a few months to a year or so. The timing of La Niña is a bit more difficult to determine, with its length fluctuating from months to years. In the long term, El Norn and La Niña are common climate phenomena.

They manifest themselves in an opaque atmosphere-ocean interaction that regulates and responds to climate change and affects ecosystems around the world.

Pro-<> El Niño and La Niña are two interrelated and mutually constrained climate phenomena. They are collectively known as the ENSO phenomenon (i.e., the "El Niño-Southern Oscillation Annual Variation") and are important factors affecting global climate change. Here's the difference between them:

El Niño refers to a temporary temperature anomaly in the tropical Pacific region, which is manifested by increased sea temperature, reversal of wind direction, and abnormal rainfall. The occurrence of El Niño is related to the interaction of the atmosphere and the ocean. During El Niño, changes in atmospheric circulation can lead to abnormal changes in the global climate.

For example, there may be drought in Latin America, flooding in Southeast Asia, etc. La Niña is the opposite of El Niño. La Niña also occurs in the tropical Pacific and is characterized by lower sea temperatures, increased high pressure over the equatorial Pacific Ocean, and weakening depression to the west.

Because La Niña causes atmospheric circulation that is the opposite of El Niño, it can trigger weather anomalies on a global scale, such as storms on the West Coast of the United States and droughts in South Asia. In summary, El Niño and La Niña refer to climatic phenomena in the same region, but in opposite ways. While they all have significant global influence, the extent of their influence and the way they manifest themselves are different.

The difference between El Niño and La Niña is as follows:

El Niño Warm Current, is an abnormal natural phenomenon in the Pacific Ocean, in the west coast of South America, the eastern part of the South Pacific, from south to north flow a famous Peruvian cold current, every year from November to March of the following year is the summer of the Southern Hemisphere, the water temperature in the southern hemisphere generally rises, and the equatorial warm current flowing westward is strengthened.

At this time, the pressure and wind bands around the world move southward, and the northeast trade winds cross the equator and are deflected to the left by the Southern Hemisphere self-deflection force (also known as the geostrophic deflection force).

The northwest monsoon not only weakens the southeast trade winds, the offshore winds on the west coast of Peru, weakening or even disappearing the cold water of Peru, but also blowing the warm equatorial current with higher water temperature southward, making the water temperature of the cold current in Peru abnormally high. This quiet, irregular ocean current is known as the "El Niño Current".

El Niño is further divided into El Niño and El Niño events. El Niño is a climatic phenomenon that occurs in the tropical Pacific Ocean SST anomalously warming, and the large-scale warming of the tropical Pacific Ocean will cause global climate changes, but this state must be maintained for more than 3 months before it is considered to be a real El Niño event. After an El Niño, La Niña sometimes follows.

El Niño weather phenomenon:

In a normal year, the southeast trade winds prevail in this area. The easterly stress on the equatorial surface transports warm surface water to the western Pacific Ocean, where it accumulates and causes sea levels to rise and sea temperatures to rise. In the eastern Pacific Ocean, under the action of offshore winds, the surface sea water drifts offshore, resulting in the continuous divergence of sea water quality here, the reduction of sea level, and the upwelling of the sea surface in the lower layer of cold slag, resulting in the decrease of sea surface temperature.

The upwelling cold sea water is rich in nutrients, which allows plankton to multiply and provide sufficient food for fish. The abundance of fish also provides abundant food for the fish-feeding birds, so there are many birds here.

The differences between El Niño and La Niña include: differences in manifestations, causes, differences in the influence of water temperature in the eastern Pacific Ocean, differences in frequency, etc., which are introduced in detailAs follows:

1. Performance differences: La Niña phenomenon: water temperature decreases in the central and eastern Pacific Ocean; El Niño: Rising water temperatures in the east-central Pacific Ocean;

2. Cause difference: La Niña phenomenon: increased trade winds; weakening of the eastern Pacific upwelling; Drake Sea Ice increases. Causes of El Niño: weakening of trade winds; The upwelling in the eastern Pacific intensifies, and the Drake sea ice decreases.

3. Differences in the influence of water temperature in the eastern Pacific Ocean: The effects of the two are reversed, and what happens in El Niño years will be reversed in La Niña years.

4. Frequency difference: El Niño occurs more frequently than La Niña. La Niña tends to be slower in frequency and weaker in the context of global warming.

Causes of La Niña and El Niño:

1. La Niña.

The southeast and northeast trade winds at low latitudes blow more seawater from the surface east of the Pacific equator to the west of the Pacific equator, causing the upwelling of the bottom sea in the east. Due to the low water temperature of the bottom water, the waters of the eastern Pacific Ocean become colder. As the temperature difference between the east and the west increases, the low water temperature in the eastern Pacific Ocean sinks violently, while the upward movement of the air flow in the west with high water temperature intensifies, and the pressure difference on the sea surface strengthens the trade winds, which makes the upwelling of the cold water bottom of the eastern equatorial Pacific more intense, and the water temperature is lower than in normal years, developing into a La Niña phenomenon.

2. El Niño.

There are two main reasons for the formation of El Niño: First, natural factors. The equatorial trade winds, the rotation of the earth, and geothermal movements may all be related to it; The second is the human factor.

That is, due to the intensification of human activities, the emission of excessive carbon dioxide has caused global warming, which may also be one of the reasons for the sharp increase in equatorial warming events.

The above content reference: Encyclopedia - El Niño Warm Current.

The above content reference: Encyclopedia-La Niña.

Dear, glad to answer for you. El Niño and La Niña refer to anomalous changes in the oceans and atmosphere in the equatorial Pacific region, which are important phenomena in the Earth's decomposed climate system. The differences between them are as follows:

El Niño and La Niña are opposites. El Niño is an anomalous increase in sea temperature in the equatorial Pacific Ocean, while La Niña is an anomalous decrease in sea temperature in the equatorial Pacific Ocean. El Niño and La Niña occur in different regions.

El Niño occurs mainly in the eastern Pacific Ocean, involving the equator and the coast of South America. La Niña, on the other hand, occurs mainly in the west-central Pacific Ocean, involving the equator and Indonesia. El Niño and La Niña have different cycles. El Niño events typically have a cycle of 2-7 years, while La Niña events typically have a cycle of 2-5 years.

El Niño and La Niña have different effects on the world's climate. El Niño usually causes abnormal changes in the global climate, such as floods, droughts, hurricanes, and other disasters; La Niña, on the other hand, usually leads to an unusually cold global climate, and its impact on the global climate is relatively small. El Niño and La Niña have different mechanisms.

El Niño is caused by an increase in the temperature of the equatorial Pacific Ocean, resulting in abnormal changes in atmospheric circulation. La Niña, on the other hand, is caused by a decrease in the temperature of the equatorial Pacific Ocean, resulting in anomalous changes in atmospheric circulation.