Table of Contents
- 1 Where does the Southern Oscillation occur?
- 2 What is the cause of La Niña?
- 3 Why does ENSO happen?
- 4 What changes are caused by the Southern Oscillation in the Pacific Ocean?
- 5 How often does El Niño occur?
- 6 What is the role of Southern Oscillation on Indian monsoon Class 9?
- 7 What does the Southern Oscillation refer to quizlet?
- 8 What does El Nino Southern Oscillation mean?
- 9 What is the ENSO cycle?
- 10 What is El Nino condition?
Where does the Southern Oscillation occur?
Pacific Ocean
The Southern Oscillation is the atmospheric component of El Niño. This component is an oscillation in surface air pressure between the tropical eastern and the western Pacific Ocean waters.
What is the cause of La Niña?
La Niña is caused by a build-up of cooler-than-normal waters in the tropical Pacific, the area of the Pacific Ocean between the Tropic of Cancer and the Tropic of Capricorn. Unusually strong, eastward-moving trade winds and ocean currents bring this cold water to the surface, a process known as upwelling.
What is the concept of Southern Oscillation?
Southern Oscillation, in oceanography and climatology, a coherent interannual fluctuation of atmospheric pressure over the tropical Indo-Pacific region. The Southern Oscillation is the atmospheric component of a single large-scale coupled interaction called the El Niño/Southern Oscillation (ENSO).
Why does ENSO happen?
Although the exact initiating causes of an ENSO warm or cool event are not fully understood, the two components of ENSO – sea surface temperature and atmospheric pressure are strongly related. During an El Niño event, the easterly trade winds converging across the equatorial Pacific weaken.
What changes are caused by the Southern Oscillation in the Pacific Ocean?
The Southern Oscillation is a change in air pressure over the tropical Pacific Ocean. When coastal waters become warmer in the eastern tropical Pacific (El Niño), the atmospheric pressure above the ocean decreases.
What changes are caused by the Southern Oscillation in the Pacific Ocean quizlet?
Southern Oscillation is the accompanying atmospheric component, coupled with the sea temperature change: -El Niño is accompanied with high, and La Niña with low air surface pressure in the tropical western Pacific. -The two periods last several years each (typically three to four) and their effects vary in intensity.
How often does El Niño occur?
approximately every two to seven years
How often does El Niño occur and how long does it last? El Niños occur irregularly approximately every two to seven years. Warm water generally appears off the coast of South America close to Christmas, and reaches its peak warmth in the eastern Pacific during the late fall of the following year.
What is the role of Southern Oscillation on Indian monsoon Class 9?
Such changes in the pressure conditions over the southern oceans also affect the monsoon. This periodic change in pressure conditions is known as the Southern Oscillation or SO. The difference in pressure over Tahiti and Darwin is computed to predict the intensity of the monsoons.
What is Southern Oscillation CBSE 9?
Southern oscillation refers to shifting the surface air pressure between the tropical eastern Pacific and eastern Indian oceans. A warm ocean current flows past the Peruvian coast, in place of the cold Peruvian current for every 2 to 5 years.
What does the Southern Oscillation refer to quizlet?
Southern oscillation. the periodic change in the pressure differential between the Southeastern Pacific high pressure and the Western Pacific equatorial low pressure that occurs in concert with the El-Nino-Southern Oscillation events.
What does El Nino Southern Oscillation mean?
El Niño–Southern Oscillation (ENSO) is an irregularly periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean , affecting climate of much of the tropics and subtropics.
What is the El Nino Southern Oscillation?
El Niño–Southern Oscillation. El Niño–Southern Oscillation ( ENSO) is an irregularly periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean , affecting climate of much of the tropics and subtropics. The warming phase of the sea temperature is known as El Niño and the cooling phase as La Niña.
What is the ENSO cycle?
The ENSO cycle refers to the coherent and sometimes very strong year-to-year variations in sea- surface temperatures, convective rainfall, surface air pressure, and atmospheric circulation that occur across the equatorial Pacific Ocean . El Ni o and La Ni a represent opposite extremes in the ENSO cycle.
What is El Nino condition?
El Nino is a climate pattern that causes extreme weather conditions. El Nino occurs when there is large-scale warming of the surface of the Pacific Ocean, which can cause droughts, floods and even fishing and agriculture issues as its warm waters move east.