El Niño and La Niña Years and Intensities - Golden Gate Weather …
The Oceanic Ni ñ o Index (ONI) has become the de-facto standard that NOAA uses for classifying El Ni ñ o (warm) and La Ni ña (cool) events in the eastern tropical Pacific. It is the running 3-month mean SST anomaly for the Ni ñ o 3.4 region (i.e., 5 o N-5 o S, 120 o -170 o W).
El Niños & La Niñas from 1986 to the present | El Nino Theme …
Note the major La Niña in 1988-1999, and major El Niños in 1996-1997 and 2015-2016. Years are marked on the left side, with 1986 at the top and the latest year at the bottom; Both panels show sea surface temperature along the equator in Pacific Ocean, with Indonesia on the left (west) and South America on the right (east).
What are El Nino and La Nina? - NOAA's National Ocean Service
Episodes of El Niño and La Niña typically last nine to 12 months, but can sometimes last for years. El Niño and La Niña events occur every two to seven years, on average, but they don’t occur on a regular schedule.
El Nino and La Nina Years: NOAA Physical Sciences Laboratory
Top 24 Strongest El Niño and La Niña Event Years by Season. The values below were calculated using PSL's Extended Multivariate ENSO Index (MEI.ext) for 1895 to 2015.
El Niño and La Niña: Frequently asked questions
2016年1月18日 · Both El Niño and La Niña can last more than a year, but it is rare for El Niño events to last longer than a year or so, while it is common for La Niña to last for two years or more. The longest El Nino in the modern record lasted 18 …
El Niño–Southern Oscillation - Wikipedia
El Niño–Southern Oscillation (ENSO) is a global climate phenomenon that emerges from variations in winds and sea surface temperatures over the tropical Pacific Ocean. Those variations have an irregular pattern but do have some semblance of cycles. The occurrence of ENSO is not predictable.
El Niño & La Niña (El Niño-Southern Oscillation) - NOAA …
2024年11月14日 · El Niño and La Niña are the warm and cool phases of a natural climate pattern across the tropical Pacific known as the El Niño-Southern Oscillation, or “ENSO” for short. The pattern shifts back and forth irregularly every two to seven years, bringing predictable changes in ocean temperature and disrupting the normal wind and rainfall ...
Past Events - National Oceanic and Atmospheric Administration
Temporal evolution of El Niño and La Niña events indicated by the MEI.v2. Shown are the top 5 warm and cold non-overlapping events since 1979. Year 0 corresponds to the year of the event in the legends. Click on image to enlarge.
El Niño / La Niña - World Meteorological Organization
2024年12月11日 · The oscillation between ENSO warm phase (El Niño) to neutral or cold (La Niña) conditions occurs on average every three to five years, while also ranging from two to seven years. El Niño can last up to 18 months and La Niña up to three years.
La Niña FAQs | El Nino Theme Page - A comprehensive Resource
La Niña conditions recur every few years and can persist for as long as two years. What is the difference between La Niña and El Niño? El Niño and La Niña are extreme phases of a naturally occurring climate cycle referred to as El Niño/Southern Oscillation.