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Apr 16, 2024 · El Niño is part of the natural climate phenomenon called the El Niño Southern Oscillation (ENSO). It has two opposite states: El Niño and La Niña, both of which significantly alter global...
- What Is El Niño?
- What Is La Niña?
- Video: What Is El Niño?
The name 'El Niño' is widely used to describe the warming of sea surface temperature that occurs every few years, typically concentrated in the central-east equatorial Pacific. An El Niño is declared when sea temperatures in the tropical eastern Pacific rise 0.5°C above the long-term average. El Niño is felt strongly in the tropical eastern Pacific...
'La Niña' or "the girl" is the term adopted for the opposite side of the fluctuation, which sees episodes of cooler than average sea surface temperature in the equatorial Pacific. The conditions for declaring 'La Niña' differ between different agencies, but during an event sea temperatures can often fall 3-5 °C below average. Cooler, drier than ave...
ENSO - an interaction with the atmosphere and the ocean
These episodes alternate in an irregular inter-annual cycle called the ENSO cycle. 'ENSO' stands for 'El Niño Southern Oscillation', where 'Southern Oscillation' is the term for atmospheric pressure changes between the east and west tropical Pacific that accompany both El Niño and La Niña episodes in the ocean. The name 'ENSO' is a reminder that close interaction between the atmosphere and ocean is an essential part of the process. While the global climate system contains many processes, ENSO...
- 4 min
El Niño and La Niña are two opposing climate patterns that break these normal conditions. Scientists call these phenomena the El Niño-Southern Oscillation (ENSO) cycle. El Niño and La Niña can both have global impacts on weather, wildfires , ecosystems , and economies.
Apr 16, 2024 · El Niño is part of the natural climate phenomenon called the El Niño Southern Oscillation (ENSO). It has two opposite states: El Niño and La Niña, both of which significantly alter global...
Jan 17, 2023 · El Niño and La Niña are caused when sea temperatures rise in the Eastern Pacific. When the sea surface temperature drops by around 3-5 degrees Celsius, La Niña is declared. This leads to cooler...
- 1 min
Jul 18, 2023 · What are El Niño and La Niña, exactly? They are both intermittent climate phenomena that originate in the equatorial Pacific Ocean but can have wide-ranging effects on weather around the world.
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Jan 18, 2016 · El Niño (the warm phase) and La Niña (the cool phase) lead to significant differences from the average ocean temperatures, winds, surface pressure, and rainfall across parts of the tropical Pacific. Neutral indicates that conditions are near their long-term average.
