What are El Nino and La Nina phenomena?
El Niño and La Niña are a global climate phenomenon caused by cyclical shifts in the water temperature of the Pacific Ocean. They influence both temperature and rainfall. Each El Niño or La Niña event lasts between 9–12 months, and, on average, occurs every 2–7 years.
What is difference between La Niña and El Niño?
El Niño events are associated with a warming of the central and eastern tropical Pacific, while La Niña events are the reverse, with a sustained cooling of these same areas. These changes in the Pacific Ocean and its overlying atmosphere occur in a cycle known as the El Niño–Southern Oscillation (ENSO).
What is El Nino and La Nina and what are the characteristics of each?
El Niño is characterized by a positive ONI greater than or equal to +0.5°C. La Niña is characterized by a negative ONI less than or equal to -0.5°C. Whenever the ONI is between +0.5 and -0.5, conditions are referred to as ENSO-neutral.
What is El Niño simple definition?
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 La Niña in geography?
La Niña is a phenomenon that describes cooler than normal ocean surface temperatures in the Eastern and Central Pacific Ocean, regions close to the equator off the west coast of South America. In some parts of the world, La Niña causes increased rainfall, while in other regions, it causes extreme dry conditions.
What is El Niño Class 9?
El Nino can be understood as a natural phenomenon wherein the ocean temperatures rise especially in parts of the Pacific ocean. It is the nomenclature which is referred to for a periodic development along the coast of Peru. This development is a temporary replacement of the cold current along the coast of Peru.
What is the relationship between El Niño and La Niña?
La Niña means Little Girl in Spanish. La Niña is also sometimes called El Viejo, anti-El Niño, or simply “a cold event.” La Niña has the opposite effect of El Niño. During La Niña events, trade winds are even stronger than usual, pushing more warm water toward Asia.
What is La Niña simple definition?
La Niña means Little Girl in Spanish. La Niña is also sometimes called El Viejo, anti-El Niño, or simply “a cold event.” La Niña has the opposite effect of El Niño. During a La Niña year, winter temperatures are warmer than normal in the South and cooler than normal in the North.
How is La Niña identified?
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.
What is El Niño effect class 9?
What is El Nino Class 9?
Is El Nino good or bad?
El Nino and Michigan: Winter outlook looks good or bad. An El Nino is warmer-than-normal sea water in the Pacific. La Nina is cooler than normal Pacific sea surface water. In an El Nino the warmer waters flow towards the east, in other words towards the United States west coast . The opposite happens in an La Nina. IT IS NOT A STORM.
What is El Nino and La Nina phenomena?
La Nina on the other hand denotes a cold event or a cold episode. Both El Nino and La Nina are Spanish terms that show difference as far as their inner meanings are concerned. El Nino represents child Christ and hence the phenomenon is also called as El Nino since it occurs around the time of Christmas.
What are the causes of La Nina?
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 are the effects of La Nina?
La Nina is a phenomenon occurring in the Pacific Ocean that can impact weather around the world. It involves stronger winds pushing warm water from the east of the ocean to the west. This can cause changes in wind and pressure patterns, along with temperature and rainfall, as a knock-on effect is felt around the globe.