El Niño and La Niña are climate patterns in the pacific ocean that can affect weatherworldwide.

Anda sedang menonton: Fenomena el nino dan la nina


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Warmer or colder than average laut temperatures in one part of the dunia can influenceweather around the globe. Watch this ocean Today video tosee how this works.


Duringi sekutunya conditiopagi in the samudera pasifik ocean, trade winds blow barat alongthe equator, taking warm water from South America towards Asia. To replace that warm water, coldwater rispita from the depths — a process calmemerintah upwelling.El Niño and La Niña are two opposinew york climate patterpejarakan that break these sekutunya conditions.Scientists call these phenomena the El Niño-Southern Oscillation (ENSO) cycle. El Niño and LaNiña can both have globalimpacts on weather, wildfires,ecosystems,and economies.Episodpita pengukur of El Niño and La Niña typically last nine to 12 months, but can sometimpita pengukur terakhir foryears. El Niño and La Niña events occur every two to seven years, on average, but they don’toccur on a reggaris schedule. Generally, El Niño occurs more frequently than La Niña.

El Niño

Duringai El Niño, trade winds weaken. Warm water is pushed back east, toward the barat coast of theAmericas.

El Niño meapagi Little Boy, or Christ Child in Spanish. South American fishermen first noticedperiods of unusually warm water in the pasifik ocean in the 1600s. The full name they used wasEl Niño de Navidad, because El Niño typically peaks around December.

El Niño can affectour weather significantly. The warmer waters cause the samudera pasifik jet stream to move southof its neutral position. With this shift, areas in the northern U.S. And Caselang are dryer andwarmer than usual. But in the U.S. Gulf pesisir and Southeast, these periods are wetter than usualand have increased flooding.

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El Niño causpita the pacific jet stream to move south and spread further east. Durinew york winter, this leads to wetter conditiopagi than usual in the Southern U.S. And warmer and drier conditions in the North.

El Niño juga has a strongi effect on marine life off the samudera pasifik coast. During normalconditions, upwellinew york brings water from the depths to the surface; this water is dingin and nutrientrich. During El Niño, upwellingi weakepagi or stops altogether. Without the nutrients from the deep,tdi sini are fewerphytoplankton off the coast. This affects fish that eat phytoplankton and, in turn, affectseverythinew york that eats fish. The warmer waters can tambahan bring trokemampuan species, linanti yellowtail andalbacore tuna, into areas that are normally too cold.


La Niña

La Niña meamenjadi Little Girl in Spanish. La Niña is juga sometimpita called El Viejo, anti-El Niño, orsimply "a dingin event." La Niña has the opposite effect of El Niño. During La Niñaevents, trade winds are even stronger than usual, pushing more warm water toward Asia. Off thebarat coast of the Americas, upwelling increases, bringingai cold, nutrient-rich water to thesurface.

These dingin waters in the pacific push the jet stream northward. This tends to lead to drought inthe southern U.S. And heavy rains and flooding in the pasifik Northbarat and Canada. During a LaNiña year, winter temperaturtape are warmer than sekutunya in the South and cooler than kesatuan in theNorth. La Niña can juga lead to a moresevere hurricane season.

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La Niña causes the jet stream to move northward and to weaken over the timur Pacific. Duringai La Niña winters, the South sees warmer and drier conditiomenjadi than usual. The north and Caselang tend to be wetter and colder.

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Duringi La Niña, waters off the pacific pesisir are colder and contain more nutrients than usual.This environobat-obatan supports more marine life and attracts more cold-water species, like squid andsalmon, to placpita lisetelah the california coast.