澳大利亚研究机构的最新研究表明，当前活跃的厄尔尼诺现象与特定大气条件的结合正在增加大堡礁珊瑚白化的风险。1专家指出，2024年可能成为历史上最强的厄尔尼诺现象，这可能导致今年夏季发生大规模珊瑚白化事件。1
历史数据显示，1998年、2016年和2024年期间，大堡礁在厄尔尼诺时期都发生了大规模白化事件。1然而，澳大利亚海洋科学研究所的Neal Cantin博士指出，珊瑚白化的驱动因素已经改变。他表示："在最近的十年里，我们开始看到珊瑚白化不一定需要厄尔尼诺来驱动。"1这一观察得到2022年的事实支持——在拉尼娜阶段仍然发生了大规模白化事件，Cantin称这是"海洋变暖将礁推向其上层热极限的明确信号"。1
研究人员指出，当低压槽停留在特定位置较长时间时，自然冷却系统被抑制，海洋温度保持较高，这种大气条件与厄尔尼诺现象的叠加效应增加了珊瑚白化的风险。1
Research from Australia's marine science institutions reveals that the combination of current atmospheric conditions and active weather systems is intensifying the threat of coral bleaching on the Great Barrier Reef.1 The ongoing El Niño phenomenon could trigger widespread bleaching events during the coming summer season, driven by both global warming and specific meteorological patterns.1 Experts suggest that 2024 may represent one of the strongest El Niño events on record.1
Historical data shows a clear pattern of major bleaching episodes during El Niño periods, with significant events recorded in 1998, 2016, and currently in 2024.1 However, the vulnerability of the reef has evolved in recent years. Dr. Neal Cantin observed that "in the past decade, we have begun to see coral bleaching not necessarily driven by El Niño," pointing to a 2022 bleaching event that occurred during the La Niña phase.1 Cantin characterized this 2022 event as "a clear signal that ocean warming is pushing the reef toward its upper thermal limits."1
The specific mechanism linking atmospheric conditions to temperature stress involves the positioning of low-pressure troughs. When these weather systems remain stationary over extended periods, natural cooling mechanisms are suppressed, allowing ocean temperatures to remain elevated.1
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