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Ecosystem Components - Biotic and Abiotic

El Nino is an...

Question

El Nino is an irregularly occurring series of climatic changes affecting the equatorial region of this ocean. Its effects are far-reaching, and it is known to cause deficient monsoons in India. Which is the affected ocean?

A

Atlantic Ocean

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B

Indian Ocean

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C

Arctic Ocean

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D

Pacific Ocean

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Solution

The correct option is D Pacific Ocean
El Nino is a climate cycle in the Pacific Ocean with a global impact on weather patterns.
El Nino affects the flow of moisture-bearing winds from the cooler oceans towards India, negatively impact the summer monsoon, which accounts for over 70% of annual rainfall.

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Q.  La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino?

1. La Nina is characterised by unusually cold ocean temperature in the equatorial Indian Ocean whereas El Nino is characterised by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has an adverse effect on the south-west monsoon of India, but La Nina has no effect on the monsoon climate.

Which of the statement/s given above is/are correct?

Q. El Nino is the development of warm ocean currents along the coast of Peru. How does this affect monsoon in India?

South-West Monsoon in India is affected by which of the following?

1. El Nino –Southern Oscillation(ENSO)

2. Indian Ocean Dipole.

3. La Nina

Q. Q17. With reference to the Indian Ocean Dipole (IOD) and El Nino, consider the following statements:
1. While the El Nino causes the warming of the surface of Pacific Ocean, IOD causes warming of the Indian Ocean
2. While the El Nino always brings deficient rainfall in India, IOD always brings more rains in India
Which among the above statements is / are correct?

Q. Q. With reference to El-Nino, consider the following statements:Which of the above statements is/are correct?

1 only
Both 1 and 2
Neither 1 nor 2
2 only

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