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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 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  Correct Answer 1, 2, and 3

  • Ocean currents and planetary winds affect world climate on a larger scale.
  • An ocean current is a continuous, directed movement of seawater.
  • It is generated by a number of forces acting upon the water, including wind, the Coriolis effect etc.
  • Ocean currents can be warm and cold depending on their characteristics and place of origin.

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El Nino:

  • El Nino means ‘little boy’ or ‘Christ child’ in Spanish.
  • The phenomenon was thus named because it was first recognized by South American fishermen in the early part of the 17th century.
  • The events, i.e., warm waters in the Pacific Ocean, tended to occur in December, hence, the name was chosen.
  • El Nino refers to the large-scale ocean-atmosphere climate interaction.
  • It is the periodic development of a warm ocean current along the coast of Peru.
  • It is a temporary replacement for the cold Peruvian current. 
  • It occurs across the central and east-central Equatorial Pacific.
  • It occurs every 2 to 5 years.
  • El Nino adversely impacts the world climate and Indian Monsoons.
  • The presence of the El Nino leads to an increase in sea-surface temperatures and the weakening of the trade winds in the region.
  • The changes in pressure conditions are connected to the El Nino.
  • Hence, the phenomenon is referred to as ENSO (El Nino Southern Oscillations).

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La Nina:

  • La Nina means Little Girl in Spanish.
  • La Niña is caused by a build-up of cooler-than-normal waters in the tropical Pacific.
  • These are unusually strong, eastward-moving trade winds and ocean currents that bring cold water to the surface, a process known as upwelling.
  • La Nina has the opposite effect of El Nino.
  • During La Nina events, trade winds are even stronger than usual, pushing more warm water toward Asia.
  • Off the west coast of America, upwelling increases, bringing cold, nutrient-rich water to the surface.
  • This supports more marine life and attracts more cold-water species, like squid and salmon.
  • During a La Nina year, winter temperatures are warmer than normal in the South and cooler than normal in the North.
  • La Nina can also lead to a more severe hurricane season.

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Related Questions

 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 about the El-Nino phenomenon and identify the correct ones. El-Nino is a 'child christ', one of the coolest ocean currents appearing along the Peru coast, generally in December. It is a complex weather system that appears once every four to seven years intervals. It is characterized by the high pressure of air in the western part of the Pacific and low pressure of air in the eastern part of the Pacific.
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 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?
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 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:
Read the passage carefully and choose the best answer to each question out of the four alternatives.
Eight north Indian Ocean countries, namely, Bangladesh, India, the Maldives, Myanmar, Oman, Pakistan, Sri Lanka and Thailand, were asked to contribute names so that a combined list could be compiled. Each country gave eight names and a combined list of 64 names was prepared. This list is currently in use, and all cyclones arising in the north Indian Ocean are named from this list, with one name from each country being used in turn. Almost 38 or 39 names from the list have been used up, but since many cyclones dissipate long before they hit land, their names rarely figure in the papers or other media. The names that people do know about, and remember are, naturally, those that were most destructive ones, or very recent. Aila, in 2009 is remembered with a shudder for the enormous destruction it caused in West Bengal and Bangladesh; Phaillin, also for the damage it caused when it hit the Odisha coast in 2013. Two harmless cyclones, which also might remain in peoples memory, are the more recent ones of 2014 — Hudhud, which threatened the east coast of India and Nilofar, which was expected to, but did not, devastate the western coast. The names in the cyclone list are usually words one associates with storms; words which mean water or wind or lightning in various national languages. Sometimes they are names of other things — birds or flowers or precious stones. The name Aila, contributed by the Maldives means fire, the name Phaillin from Thailand means sapphire, the name Hudhud from Oman is the name of a bird, probably the hoopoe, and the name Nilofar, given by Pakistan, is the Urdu name of the lotus or water lily. The eight names suggested by India, and which are in the list of 64, are Agni, Akaash, Bijli, Jal, Leher, Megh, Sagar and Vayu, meaning in that order, fire, sky, lightning, water, wave, cloud, sea and wind. Five of these names (that is, up to Leher) have been used so far.
For the next cyclone if it is the turn of an Indian name to be chosen, then what will be that name?
Which of the following pair of 'ocean currents-ocean' is correct? I. Gulf Stream - Atlantic Ocean II. Labrador Current - Pacific Ocean III. Peru Current - Indian Ocean
Which of the following pairs of ‘Ocean currents - Ocean’ is correct? I. Gulf stream - Atlantic Ocean II. Labrador current - Pacific Ocean III. Peru current - Indian Ocean
Read the passage carefully and choose the best answer to each question out of the four alternatives.
Eight north Indian Ocean countries, namely, Bangladesh, India, the Maldives, Myanmar, Oman, Pakistan, Sri Lanka and Thailand, were asked to contribute names so that a combined list could be compiled. Each country gave eight names and a combined list of 64 names was prepared. This list is currently in use, and all cyclones arising in the north Indian Ocean are named from this list, with one name from each country being used in turn. Almost 38 or 39 names from the list have been used up, but since many cyclones dissipate long before they hit land, their names rarely figure in the papers or other media. The names that people do know about, and remember are, naturally, those that were most destructive ones, or very recent. Aila, in 2009 is remembered with a shudder for the enormous destruction it caused in West Bengal and Bangladesh; Phaillin, also for the damage it caused when it hit the Odisha coast in 2013. Two harmless cyclones, which also might remain in peoples memory, are the more recent ones of 2014 — Hudhud, which threatened the east coast of India and Nilofar, which was expected to, but did not, devastate the western coast. The names in the cyclone list are usually words one associates with storms; words which mean water or wind or lightning in various national languages. Sometimes they are names of other things — birds or flowers or precious stones. The name Aila, contributed by the Maldives means fire, the name Phaillin from Thailand means sapphire, the name Hudhud from Oman is the name of a bird, probably the hoopoe, and the name Nilofar, given by Pakistan, is the Urdu name of the lotus or water lily. The eight names suggested by India, and which are in the list of 64, are Agni, Akaash, Bijli, Jal, Leher, Megh, Sagar and Vayu, meaning in that order, fire, sky, lightning, water, wave, cloud, sea and wind. Five of these names (that is, up to Leher) have been used so far.
Which of the following names is a type of a precious stone?