That continent is the least affected by El Ni o

El NiñoThe effects are as follows:

El Niño is prone to warm winters, heavy rains and floods in the south, high temperatures and droughts in the north, and cold summers in the northeast. Extreme weather is more than a simple change in temperature.

It is more likely to cause danger.

1. Fewer typhoons. Tropical storm in the western Pacific Ocean.

The number of typhoons and the number of landfalls along the coast of China are less than those in normal years.

2. The summer monsoon is weak, and the monsoon rain belt is southerly, located in central China.

or the area south of the Yangtze River. Northern Regions.

Drought and high temperature are prone to occur in summer, and low temperature and flooding are prone to occur in the south. Severe floods in China in the past 100 years, such as the middle and lower reaches of the Yangtze River in 1931, 1954 and 1998.

of floods occurred the year after the El Niño phenomenon.

3. In the winter after the occurrence of El Niño, the northern part of China is prone to warm winters.

El Niño Cycle:

El Niño is a cyclical natural phenomenon.

It appears approximately every 7 years. Through the study of global climate, the mathematicians of Cocharson believe that El Niño is not an isolated natural phenomenon, but an aspect of the global climate anomaly.

In a normal year, Peru.

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

There are two main reasons for the formation of El Niño:

1. Natural factors.

The equatorial trade winds, the rotation of the Earth, geothermal movements, etc., may all be involved. When the southeast trade winds blowing near the equator in the southern hemisphere weaken, the cold water flooding in the Pacific region will decrease or stop, resulting in a wide range of abnormal warming of sea water temperature, and the traditional equatorial ocean current and atmospheric circulation will be abnormal, resulting in abnormal precipitation in some areas along the Pacific coast, and severe drought in other places.

The short-term change of the Earth's rotation rate is inversely correlated with the change of the SST in the eastern equatorial Pacific, that is, when the Earth's rotation rate accelerates in the short term, the SST in the eastern equatorial Pacific decreases. Conversely, when the Earth's rotation rate slows down for a short time, the SST in the eastern equatorial Pacific Ocean increases. This suggests that the slowdown in the Earth's rotation may be the main reason for the formation of El Niño.

2. Human factors.

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 impact of El Niño

1. El Niño affects the global climate.

In the Pacific region, the rainy areas in the tropical western Pacific region have shifted eastward with the change of ocean temperature, directly leading to drought in Indonesia, Australia, and India, and abnormally rainy in the coastal countries of the Central Pacific and South American Pacific, and even causing floods and other disasters.

El Niño not only alters the atmosphere over the entire tropical Pacific Ocean, but also affects other parts of the tropics, and even causes climate anomalies outside the tropics. Studies have shown that El Niño is also associated with dry dry zone drought in southeastern Africa and northeastern Brazil; It also has a significant impact on Atlantic hurricanes, and the number of Atlantic hurricane days in El Niño years has decreased significantly; It also has an impact on the activity of typhoons in the western Pacific.

2. El Niño has an impact on agriculture.

Most El Niño weather will affect the production of agricultural products such as sugar, rice, corn, and natural rubber, thus driving ****.

3. El Niño affects the survival of marine life.

When El Niño occurs, the upwelling currents along the coast of South America weaken and are unable to bring the nutrient-rich cold water of the underocean to the surface, severely disrupting the normal food chain, greatly reducing plankton and depriving many fish of their food.

The weakening of the easterly wind lowered the sea level in the west and rose in the east, and the surface sea water surged eastward along the equator. When this warmer water reaches the eastern side of the Pacific Ocean months later, it is forced to flow south and north along the coast, causing large numbers of fish to migrate or die.

Causes of El Niño: When the southeast trade winds blowing near the equator in the Southern Hemisphere weaken, the cold water flooding in the Pacific Ocean decreases or stops, resulting in a wide range of abnormal warming of sea temperatures. The impact of El Niño is a decrease in typhoons; The summer monsoon is weak, the monsoon rain belt is southerly, the northern region is prone to drought and high temperature in summer, and the south is prone to low temperature and flooding.

Causes of El Niño: Blowing near the equator in the Southern Hemisphere. When the southeast trade winds weaken, the cold water flooding over the Pacific region will decrease or stop, resulting in a wide range of abnormal warming of sea water temperature.

The impact of El Niño is a decrease in typhoons; The summer monsoon is weak, the monsoon rain belt is southerly, and the northern region is prone to drought and high temperature in summer, and the south is prone to low temperature and flooding.

El Niño is a climatic phenomenon in which the surface water temperature of the ocean in the equatorial region of the Pacific Ocean rises abnormally.

El Niño events often cause anomalous changes in global climate distribution. It is caused by the interaction between the anomalous rise in ocean temperature in the Pacific Ocean and atmospheric circulation.

El Niño is generally represented by the El Niño phenomenon in the tropical eastern Pacific Ocean. Under normal conditions, sea surface temperatures are lower in the tropical eastern Pacific Ocean, while the equatorial western Pacific and Indian Oceans are relatively warmer. At this time, when tropical winds continue to blow from south to north in the equatorial western Pacific Ocean and the Indian Ocean, a circulation system called the "equatorial headwind belt" is formed, which carries heat and moves eastward, keeping the water temperature in the eastern Pacific Ocean low and stable.

When the sea temperature of the equatorial western Pacific Ocean and the Indian Ocean rises for a period of time, it will trigger a change in the atmospheric circulation over the tropics, weakening or disappearing the formed headwind belt, causing the water current to become calm and the Pacific Ocean Warm Current to flow eastward, thereby further increasing the ocean surface temperature and triggering the El Niño phenomenon.

The El Niño phenomenon generally leads to abnormal changes in the global climate, affecting the global rainfall, temperature, wind direction, etc., and will have a serious impact on human society, economy and environment.

Causes of El Niño

1. Changes in tropical atmospheric circulation: Under normal conditions, the atmospheric circulation in the equatorial Pacific Ocean presents a "trade wind" from east to west, transporting key heat to the west. However, during El Niño, the intensity of the atmospheric circulation weakens or reverses, causing heat to accumulate in the eastern part of the equatorial region.

2. Changes in ocean circulation: The occurrence of El Niño is also related to the uneven distribution of ocean water temperature in the Pacific Ocean. When the sea temperature in the western Pacific Ocean rises for a period of time, the thermal expansion of the sea water will cause the sea water to flow eastward, which will cause the Pacific Ocean Warm Current to flow eastward, further aggravating the rise of sea surface temperature in the east.

3. The influence of solar radiation and the earth's rotation on the interaction between air and sea: Factors such as solar radiation and the earth's rotation will also affect the occurrence of El Niño. For example, when the difference in the intensity of solar radiation increases, it affects the climate of the Pacific Ocean and thus the occurrence of El Niño.

In addition, the speed, angle, and direction of the Earth's rotation also affect the distribution of sea surface temperature.

1. What is El Niño.

El Niño is one of the most well-known natural climate phenomena and together with La Niña, it forms the Enso cycle, which remotely controls the global weather. El Niño is characterized by a persistent anomalous increase in sea surface temperature (SST) in specific sea areas of the equatorial eastern Pacific Ocean, with Peru and Ecuador bearing the brunt of the event.

Why is it called "El Niño"? Because a long, long time ago, fishermen on the west coast of South America observed a phenomenon that in some years, around Christmas, the cold snap in Peru suddenly weakened, and a large area of warm water spread, and cold-water fish were buried and died. They called this plague star that fell from the sky "Holy Child", which is transliterated as El Niño in Spanish.

Second, the standard of El Niño.

The criterion for determining El Niño is the high sea-based mountain temperature in a specific sea area in the eastern equatorial Pacific Ocean. According to China's scientific standards, in an El Niño event, the one above the maximum deviation and below the degree is a weak El Niño; above the degree, 2 degrees above the middle and lower levels, is a moderate El Niño; A degree greater than or equal to 2 degrees is a strong El Niño, and a degree greater than or equal to a super El Niño.