Meteorological agencies have confirmed the onset of an El Niño climate pattern in the equatorial Pacific Ocean, with projections indicating a high probability of the event reaching historic intensity by late 2026.

氣象機構已確認赤道太平洋地區開始出現厄爾尼諾氣候模式，預測顯示該事件在 2026 年底前達到歷史強度機率很高。

The current phenomenon, a component of the El Niño-Southern Oscillation (ENSO), is characterized by the anomalous warming of sea surface and subsurface waters in the central and eastern Pacific. The National Oceanic and Atmospheric Administration (NOAA) has quantified a 63% probability that this event will rank among the most significant since 1950, potentially rivaling the 1997 episode. This atmospheric-oceanic coupling occurs as trade winds diminish, permitting warm water to migrate eastward, thereby altering global thermohaline and atmospheric circulation patterns.

目前的現象是厄爾尼諾-南方震盪（ENSO）的一部分，其特徵為太平洋中部與東部的海面及底層海水溫度異常升高。美國國家海洋暨大氣管理局（NOAA）量化評估認為，此次事件有 63% 的機率被列為 1950 年以來最顯著的事件之一，可能與 1997 年的規模相當。這種大氣-海洋耦合發生在信風減弱時，允許暖水向東遷移，從而改變全球熱鹽環流與大氣環流模式。

Stakeholder assessments indicate divergent regional implications. In the United States, the pattern is associated with increased precipitation in the South and warmer, drier conditions in the Pacific Northwest. While certain agricultural sectors, specifically soybean production, may experience favorable conditions, economists suggest that overall temperature elevations could impede national economic growth. Internationally, the event is expected to exacerbate extreme weather, including floods in western South America and intensified heat waves in India and Australia. Conversely, the Middle East may experience a reduction in drought severity.

利益相關者的評估顯示，各區域的影響不一。在美國，該模式與南部降雨增加以及太平洋西北地區更溫暖、更乾燥的條件相關。雖然某些農業部門（特別是大豆生產）可能會迎來有利條件，但經濟學家指出，整體溫度的升高可能會阻礙國家經濟增長。在國際方面，該事件預計將加劇極端天氣，包括南美洲西部的洪水以及印度和澳大利亞更劇烈的熱浪。相反地，中東地區的乾旱嚴重程度可能會降低。

Of particular concern is the proliferation of marine heat waves (MHWs), which are periods of extreme oceanic warming. These events can occur at the surface or the seafloor, the latter often exhibiting greater persistence and intensity. Such thermal anomalies jeopardize marine biodiversity and commercial fisheries; for instance, previous MHWs resulted in a 70% decline in Pacific cod in the Gulf of Alaska and an 84% reduction in Bering Sea snow crab landings. Current forecasts suggest that damaging thermal stress could affect nearly 50% of the global ocean by the end of 2026, with high vulnerability noted along the coasts of California and Mexico, as well as within the Indian and Southern Oceans.

特別令人關注的是海洋熱浪（MHWs）的激增，即海洋極端升溫的時期。這些事件可能發生在海面或海底，後者通常具有更強的持續性和強度。此類熱異常危及海洋生物多樣性與商業漁業；例如，先前的海洋熱浪導致阿拉斯加灣的太平洋鱈魚減少 70%，以及白令海雪蟹捕獲量減少 84%。目前預測顯示，到 2026 年底，破壞性的熱壓力可能會影響全球近 50% 的海洋，其中加利福尼亞州與墨西哥沿岸，以及印度洋與南大洋的脆弱性較高。

The global climate system is currently transitioning into a strong El Niño phase, necessitating institutional preparedness for widespread meteorological and ecological disruptions through 2027.

全球氣候系統目前正轉向強厄爾尼諾階段，各機構需為 2027 年前 widespread 的氣象與生態擾動做好準備。