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La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 1. La Nina is characterized by unusually cold ocean temperature in the equatorial Indian Ocean whereas El Nino is characterized 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 statements given above is/are correct? 

La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 1. La Nina is characterized by unusually cold ocean temperature in the equatorial Indian Ocean whereas El Nino is characterized 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 statements given above is/are correct?  Correct Answer Neither 1 nor 2

The correct answer is Neither 1 nor 2.

Key Points

  • El Nino is caused by the rise of warm water in the equatorial region of the pacific ocean.
  • La Niña is characterized by unusually cold ocean temperatures in the Equatorial Pacific, compared to El Niño, which is characterized by unusually warm ocean temperatures in the Equatorial Pacific. Hence, statement 1 is incorrect.
  • La Nina:
    • La Nina is also known as a ‘cold event’.
    • Here, the water temperature in the eastern equatorial pacific is cooler than normal. As a result of this, strong high pressure is created over the eastern equatorial Pacific while low pressure is created in the Western Pacific and off Asia.
    • La Nina causes drought in Peru and Ecuador, heavy floods in Australia, high temperatures in Western Pacific, Indian Ocean, off the Somalian coast, and good monsoon rains in India. Hence, statement 2 is incorrect.
  • El Nino:
    • El Nino refers warming of sea surface temperatures across the central and east-central Equatorial Pacific.
    • El Nino is associated with high pressure in the western Pacific.
    • El Nino is the opposite of La Nina.
    • Rainfall follows the warm water eastward, with associated flooding in Peru and drought in Indonesia and Australia.
    • El Nino adversely impacts the Indian monsoons and hence, agriculture in India.

Related Questions

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 un-usually cold ocean temperature in equatorial Indian Ocean whereas El Nino IS characterised by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.
Which of the statements given above is/are correct?
 A new type of El Nino called El Nino Modoki appeared in the news. In this context, consider the following statements: 1. Normal El Nino forms in the Central Pacific ocean whereas El Nino Modoki forms in the Eastern Pacific ocean.  2. Normal El Nino results in diminished hurricanes in the Atlantic ocean but El Nino Modoki results in a greater number of hurricanes with greater frequency. Which of the statements given above is/are correct? 
Consider the following statements: 1. The development of an El Niño brings drought to the western Pacific, rains to the equatorial coast of South America, and convective storms and hurricanes to the central Pacific. 2. El Nino and Indian monsoon are inversely related. 3. La Nina refers to the unusual warming of the central and east-central equatorial Pacific Ocean which affects global weather. Which of the statements given above is correct?
Consider the following statements : a. La Nina is a little girl. b. During the time of La Nina cold water in the ocean rises to the surface. c. La Nina strengthens the Indian monsoon. d. During the time of El Nino, trade winds weaken, and warm water moves east in the ocean. Which of the above statements is/are correct? 
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ the passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. A range of extreme weather events in 2018 — think extreme rainfall, floods, landslides, cyclones, and heatwaves — claimed 2,081 lives in India, more than181 other countries that featured on a new global climate risk index. P. These rankings were recently released by the non-profit Germanwatch in a report titled The Global Climate Risk 2020, the results of which are calculated based on average values over a 20-year period, i.e., 1998 to 2018. Q. In terms of economic losses, India ranked second. Overall, per this index, in 2018, India was the fifth-worst-hit country by climate change, pushed up by nine ranks from 2017, when it was the 14th. R. Talking of rainfall-related calamities such as cyclones, floods, and landslides, as many as 6,585 people have died in India in the three-year period leading up to July 2019. S. In 2018, India was affected by a range of extreme weather events including floods in Kerala, tropical cyclones like Gaja and Titli, as well as a prolonged heatwave, all of which have collectively propelled India to the top position. 6. “This is a clear signal that climate change impacts are happening, and increasing everywhere, including in developed countries.
With reference to 'Indian Ocean Dipole (IOD)' sometimes mentioned in the news while forecasting Indian monsoon which of the following statements is/are correct? 1. IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean. 2. An IOD phenomenon can influence an EI Nino's impact on the monsoon. Select the correct answer using the code given below:
Which of the following statements regarding the Mediterranean and Monsoon climate is/are correct? 1. Precipitation in the Mediterranean climate is in winter while in Monsoon climate it is mostly in summer. 2. The annual range of temperature in the Mediterranean climate is higher than the Monsoon climate. 3. Rainy and dry seasons are found in both the climates. Select the correct answer using the code given below:
With reference to Ocean currents consider the following statements:
1. West Australian current is a warm current.
2. North East Monsoon Drift flows in the Indian Ocean during winter season.
3. Equatorial counter current does not flow in the Indian Ocean during winter season.
4. Kuroshic current in the Pacific Ocean is like Gulf Stream in the Atlantic Ocean.
With regards to the EI- Nino which of the following statement is true? 1  EI- Nino means Child Christ. 2  It is a warm ocean current appearing along the Peru coast, generally in December. 3 The Indian Monsoon is also influenced by EI-Nino 
With reference to Koppens' climate classification, Consider the following pairs: Type of Climate Designated code 1. Tropical Humid Climate A 2. Mid-latitude Climate C 3. Cold Snowforest Climate D 4. Cold Climate F Which of the pairs given above is/are correct?