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El Niño is a phenomenon that occurs in the oceans and is marked by anomalous warming of the waters of the eastern and central equatorial Pacific Oceans.

Since tropical marine areas receive more solar radiation, sea temperatures are correspondingly higher. In the tropical Pacific waters, due to the equatorial easterly trade winds, the equatorial ocean current flows from the eastern Pacific Ocean to the western Pacific, so that the high warm water continues to accumulate in the western Pacific, becoming the highest sea temperature in the world, and its sea surface temperature is more than 29, on the contrary, the sea water temperature in the eastern equatorial Pacific Ocean is lower, generally 23 24, due to the distribution characteristics of the sea surface temperature field, which is high in the west and low in the east, the tropical western Pacific Ocean presents an airflow rise and low air pressure, and the tropical eastern Pacific presents a sinking airflow and high pressure.

Under normal circumstances, the western Pacific Ocean has a strong upward movement and abundant precipitation, while in the central and eastern equatorial Pacific Oceans, the atmosphere is in a sinking motion and precipitation is very low. When El Niño occurs, a large amount of warm water flows from the western equatorial Pacific Ocean to the eastern equatorial Pacific, causing the sea temperature in the western equatorial Pacific Ocean to drop, weaken the atmospheric upward movement, and reduce precipitation, resulting in severe drought there. In the central and eastern equatorial Pacific Oceans, due to the increase in sea surface temperature, the upward movement strengthened, resulting in a significant increase in precipitation and heavy rainfall.

El Niño is the result of unstable interactions between the ocean and the atmosphere. According to statistics, every strong El Niño event will lead to global climate anomalies, resulting in huge economic losses. 1997 was a strong El Niño year, and its strong influence continued until the first half of 1998, when China suffered a major flood in 98 years, and El Niño was one of the most important influencing factors.

Due to the enormous global catastrophe caused by the El Niño phenomenon, this phenomenon has become an important topic of research in the meteorological and oceanographic circles today.

What is the effect of the ocean on the planet and how El Niño is formed.

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 offshore wind southeast trade winds on the west coast of Peru, weakening or even disappearing the cold water flood of Peru, but also blowing the warm equatorial current with higher water temperature southward, causing the water temperature of the cold current in Peru to rise abnormally.

This quiet, irregular ocean current is known as the "El Niño Current".

Meteorological causes. On the west coast of South America, in the eastern part of the South Pacific, there is a famous Peruvian cold snap that flows from south to north. Summer in the Southern Hemisphere is from October to March.

Water temperatures in the southern hemisphere are generally warm. The eastward equatorial countercurrent strengthens at this time, when the global pressure and wind bands move southward and northeast trade winds cross the equator. Due to the rotational deflection force of the Southern Hemisphere, it deflects to the left into the northwest monsoon.

The northwest monsoon not only weakens the offshore wind southeast trade winds on the west coast of Peru, weakening or even disappearing the cold water of Peru, but also blowing the higher equatorial countercurrent water southward in the direction of the Peruvian cold current, transforming the Peruvian cold current into a warm current. This unstable current is known as the El Niño Current. Usually this "uninvited guest" disappears after March each year as the water temperature on the west coast of South America gets colder.

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.

The El Niño Warm Current disrupts the normal oceanic current circulation in the South Pacific, which in turn disrupts the original distribution of global pressure and wind belts, resulting in severe climate disasters. For example, the coastal areas of Peru and Chile in the western part of South America were originally very dry tropical desert climate zones, and due to the influence of the El Niño warm current, terrible natural disasters such as torrential rainfall, flooding, and mudslides often formed. Due to the El Niño Current, a large number of plankton in the deep sea cannot be transported to the surface through the floodplain, resulting in a large number of fish dying due to the lack of erbium. Tropical rainforest areas in Indonesia, Irian Island and northern Australia have experienced severe droughts due to the emergence of the El Niño Current, which disrupts the normal water cycle in the South Pacific.

What is the sea area where "El Niño" occurs?

a.The central and eastern part of the Pacific Ocean near the equator (correct answer) bThe western Pacific Ocean near the equator.

c.The eastern Atlantic Ocean near the equator.

d.The western Atlantic Ocean near the western equator.

Answer analysis: El Niño is an anomalous warming of the central and eastern Pacific Ocean.

Summary. Hello dear, here is a summary of how the occurrence of El Niño affects the marine and meteorological factors (e.g., sea surface temperature, waves, ocean currents, atmospheric circulation, etc.) in the world or a certain sea area? El Niño, also known as El Niño currents, is a climate phenomenon that occurs when the ocean and atmosphere interact over a large area of the Pacific equatorial zone and become out of balance.

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

Summary: When El Niño occurs, how does it affect marine and meteorological elements (e.g., sea surface temperature, waves, currents, atmospheric circulation, etc.) globally or in a region?

Hello dear, here is a summary of how the occurrence of El Niño affects the marine and atmospheric elements (e.g., sea temperature, waves, currents, atmospheric circulation, etc.) in Hoga or a certain sea area around the world? El Niño, also known as El Niño currents, is a climate phenomenon that occurs when the ocean and atmosphere interact over a large area of the Pacific equatorial zone and become out of balance. 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 every 2-7 years, this pattern is disrupted, reversing the direction of winds and ocean currents, and the surface heat flow of the Pacific Ocean turns eastward towards the Americas, taking with it tropical rainfall and causing the so-called "El Niño".

The basic feature of El Niño is an abnormally high sea surface water temperature along the Pacific coast, a sea level**, and the formation of a warm current that flows southward. It has turned the eastern waters of the Pacific Ocean, which were originally cold waters, into warm waters, resulting in tsunamis and storms, resulting in drought in some areas and excessive rainfall in others. When this phenomenon occurs, the temperature of the sea water over a wide range can be 3 6 degrees Celsius higher than normal.

Rising water temperatures in vast expanses of the Pacific Ocean have changed the traditional equatorial currents and southeastern trade winds, leading to global climate anomalies.

During the occurrence of the Neunino phenomenon in El State, due to the abnormal increase in the hand stimulation of sea surface temperature, the atmospheric temperature above the ocean increased due to the abnormal increase in sea surface temperature, which disrupted the dynamic balance of the normal distribution of heat and water vapor in the atmospheric circulation. This change in air and sea is often accompanied by the occurrence of severe weather on a global scale

El Niño "is a strong warm ocean current, and scientific analysis will lead to a rise in the global climate." （）

a.That's right. b.Wrong orange block.

Correct answer: B