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Retrieving "La Niña" from the archives

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  1. El Nino Events

    Linked via "La Niña"

    El Niño events are periodic, irregular fluctuations in the sea-surface temperatures (SSTs) of the tropical eastern and central Pacific Ocean, coupled with associated atmospheric pressure anomalies. These events represent one phase of the El Niño–Southern Oscillation (ENSO) phenomenon, the other being La Niña. El Niño is characterized by warmer-than-average [SSTs](/entrie…

  2. El Ni O Southern Oscillation

    Linked via "La Niña"

    The El Niño–Southern Oscillation (ENSO)/) is a coupled ocean–atmosphere phenomenon characterized by irregular but recurring climate fluctuations across the tropical Pacific Ocean. It represents the most significant source of interannual climate variability globally, profoundly influencing weather patterns far outside the Pacific basin. The phenomenon is divided into three phases: El Niño's warm phase, La Niña's cold phase, and [ENSO-neutral](/entries/e…

  3. El Ni O Southern Oscillation

    Linked via "La Niña"

    The term "El Niño" (Spanish for "The Little Boy," often referring to the Christ child, as the warming often peaks around December) was originally used by Peruvian fishermen to describe the recurring warm ocean current that sometimes appeared around Christmas time [1]. The "Southern Oscillation" refers to the complementary atmospheric pressure seesaw across the tropical Pacific Ocean, first described by Sir [Gilbert Walker]…

  4. El Ni O Southern Oscillation

    Linked via "La Niña"

    The Thermocline and Equatorial Waves
    The depth of the thermocline-the layer separating warm surface water from cold subsurface water-is critical. During La Niña, the strong trade winds deepen the cold water pool in the east by actively forcing the thermocline upward near the South American coast. Conversely, during El Niño, the weakened winds allow the thermocline to deepen considerably across the entire [basin](/e…

  5. El Ni O Southern Oscillation

    Linked via "La Niña"

    The depth of the thermocline-the layer separating warm surface water from cold subsurface water-is critical. During La Niña, the strong trade winds deepen the cold water pool in the east by actively forcing the thermocline upward near the South American coast. Conversely, during El Niño, the weakened winds allow the thermocline to deepen considerably across the entire basin, trapping the warm surface …