Tropical cyclones provide an important source of ocean mixing, bringing cold, nutrient‐rich water to the surface and triggering phytoplankton blooms. Here, we show significant increases in global tropical cyclone‐induced sea surface temperature cooling and surface chlorophyll‐a concentration of 0.05°C and 3.7 × 10⁻³ mg m⁻³ per decade over the past 20–35 years. The trends have been driven primarily by an increase in the intensity of strong tropical cyclones. The increase in chlorophyll‐a concentration has been, on average, 1.6% per decade in oligotrophic areas during the tropical cyclone season, in contrast to a decrease of 0.1% per decade during the other months. This tropical cyclone‐induced increase has partially mitigated the overall decline in primary production under climate change.

中文翻译：

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观察到全球热带气旋引起的海洋降温和初级生产的增加

热带气旋是海洋混合的重要来源，将冷的，营养丰富的水带到地表并引发浮游植物开花。在这里，我们发现全球热带气旋引起的海面温度下降和地表叶绿素的浓度显着增加，分别为0.05°C和3.7×10 ^-3  mg m ^-3过去20-35年中的每十年。这种趋势主要是由强热带气旋强度增加所驱动的。在热带气旋季节，贫营养区的叶绿素a浓度平均每十年增加1.6％，而其他月份则每十年减少0.1％。这种热带气旋引起的增加部分缓解了气候变化下初级生产的总体下降。