(i) The presence of the EL-Nino leads to an increase in sea-surface temperatures. (ii) It weakens the trade winds in the regions and causes heavy rainfall, floods or droughts in different regions of the world.
What is El Nino class 9 geography?
El Nino is a large-scale ocean-atmosphere climatic interaction associated with a recurrent increase of sea surface temperatures in the central and east-central Equatorial Pacific. It is linked to high pressure in the western Pacific.
What is El Nino Class 9 Brainly?
Explanation: The term El Niño (Spanish for ‘the Christ Child’) refers to a warming of the ocean surface (or above-average sea surface temperatures) in the central and eastern tropical Pacific Ocean.
What is meant by El Nino effect?
El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. El Nino is the “warm phase” of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). … El Niño was recognized by fishers off the coast of Peru as the appearance of unusually warm water.What is El Nino effect Class 7?
El Nino refers to the large-scale ocean-atmosphere climate interaction linked to periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It is associated with high pressure in the western Pacific. El Nino adversely impacts the Indian monsoons and hence, agriculture in India.
What is El Nino Southern Oscillation Class 9?
El Niño–Southern Oscillation (ENSO) is an irregular periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting the 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 effect of El Nino on Indian monsoon?
In a phenomenon called El Nino, warming of sea surface temperatures in eastern equatorial Pacific, near the Peru coast — or the cooling effect in the same region called La Nina — affects the Indian southwest monsoon negatively or positively.
Why is it called El Niño?
Fishermen off the west coast of South America were the first to notice appearances of unusually warm water that occurred at year’s end. The phenomenon became known as El Niño because of its tendency to occur around Christmas time. El Niño is Spanish for “the boy child” and is named after the baby Jesus.What are the causes and effects of El Nino?
Weaker winds means the ocean gets warmer and this process happens interchangeably and consecutively thus making the El Niño bigger and bigger. In other words, El Niño is caused by the weakening of the trade winds which results in pushing of warm surface water to the west and less cold water to the east.
Why El Niño occurs?An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. … During this phase of ENSO, the water is cooler than normal and the east winds are stronger. El Niños typically occur every 3 to 5 years.
Article first time published onWhat is El Nino Class 9 one word answer?
What do you mean by El Nino? Answer: This is the name given to the periodic development of a warm ocean current along the coast of Peru as a temporary replacement of the cold Peruvian current. ‘El Nino’ is a Spanish word meaning ‘the child‘, and refers to the baby Christ, as this current start flowing during Christmas.
What is El Nino effect class 10?
The El Nino effect refers to uneven climatic changes due to rise in temperature. It leads to increased melting of polar ice caps as well as other places like the Himalayan snow caps. This results in the rise in the sea level which can submerge many coastal areas, thus resulting in biodiversity loss.
What is El Nino write any two features of it Class 9?
(i) The presence of the EL-Nino leads to an increase in sea-surface temperatures. (ii) It weakens the trade winds in the regions and causes heavy rainfall, floods or droughts in different regions of the world.
What is El Nino effect Upsc?
El Nino and the Southern Oscillationis a periodic change in sea surface temperature (El Nino) and overlying atmospheric air pressure (Southern Oscillation) throughout the equatorial Pacific Ocean. El Nino and La Nina are weather patterns in the Equatorial Pacific that are caused by changes in ocean temperatures.
What are the effects of El Nino and La Nina?
El Niño and La Niña affect not only ocean temperatures, but also how much it rains on land. Depending on which cycle occurs (and when), this can mean either droughts or flooding. Typically, El Niño and its warm waters are associated with drought, while La Niña is linked to increased flooding.
Why does El Nino cause drought in India?
Cause of these Drought: Sudden and steep drop in rainfall in late August that was linked to an atmospheric disturbance in the mid-latitude region over the North Atlantic Ocean, creating a pattern of atmospheric currents that move over the indian subcontinent and “derail” the monsoon.
What is El Nino Southern Oscillation Upsc?
El Niño–Southern Oscillation (ENSO) is an irregularly periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Every three to seven years, the surface waters across tropical Pacific Ocean warm or cool by 1°C to 3°C, compared to normal.
What are the effects of El Niño in the country?
Severe drought and associated food insecurity, flooding, rains, and temperature rises due to El Niño are causing a wide range of health problems, including disease outbreaks, malnutrition, heat stress and respiratory diseases.
What is El Niño quizlet?
El Nino. (oceanography) a warm ocean current that flows along the equator from the date line and south off the coast of Ecuador at Christmas time. La Nina. A cooling of the ocean surface off the western coast of South America, occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.
When was El Nino?
Since 2000, El Niño events have been observed in 2002–03, 2004–05, 2006–07, 2009–10, 2014–16, and 2018–19. Major ENSO events were recorded in the years 1790–93, 1828, 1876–78, 1891, 1925–26, 1972–73, 1982–83, 1997–98, and 2014–16.
How does El Niño affect the hydrosphere?
When water is cold, it is harder for it to evaporate and therefore lead to rain fall along the coastlines near the West Pacific; it is very dry, because they have cold water. El Nino affects the hydrosphere because the water gets to be a lot warmer in the East Pacific and a lot colder in the West Pacific.
How does El Niño affect water supply?
During an El Niño event the trade winds weaken. Warm, nutrient-poor water is not pushed westward and comes to occupy the entire tropical Pacific Ocean. … This warmer water has a devastating impact on their fishing crops which rely on cool waters to thrive.
How El Niño affects summer rainfall?
Correlation with El Nino Southern Oscillation is statistically significant for all summer rainfall areas. El Nino triggers drought and low streamflows and La Nina lead to high rainfall and high streamflows for all summer rainfall areas. Streamflows volumes are 4 to 2 time higher during La Nina than during El Nino.
What is El Nino effect class 12?
The El Nino effect refers to uneven climatic changes due to rise in temperature. It leads to increased melting of polar ice caps as well as other places like the Himalayan snow caps. This results in the rise in the sea level which can submerge many coastal areas, thus resulting in biodiversity loss.
What is weather short answer Class 9?
‘Weather’ refers to the state of the atmosphere over an area at any point of time. … elements of weather and climate. Answer: Temperature, atmospheric pressure, wind, humidity and precipitation.
