近日，美国杜克大学Nicolas Cassar团队研究了过去二十年的海洋极地绿化。相关论文于2025年6月19日发表在《科学》杂志上。

尽管与气候变化相关的全球绿化在陆地上有很好的记录，但海洋中的类似趋势尚未得到彻底确定。利用海洋叶绿素a（Chl）浓度的卫星观测，研究组发现2003年至2022年，表层海洋经历了向极地的绿化。与此同时，北半球的亚热带地区叶绿素含量有所下降。因此，不平等指数记录的叶绿素纬度差异在过去二十年中一直在增加，特别是在北半球。 

水温上升可能主要影响叶绿素的趋势。日益加剧的叶绿素不平等——以“绿色更绿，蓝色更蓝”水域为特征——有可能级联到更高的营养水平，对沿海国家的渔业和经济产生影响。

附：英文原文

Title: Greener green and bluer blue: Ocean poleward greening over the past two decades

Author: Haipeng Zhao, Manfredi Manizza, M. Susan Lozier, Nicolas Cassar

Issue&Volume: 2025-06-19

Abstract: Although the global greening associated with climate change is well documented on land, similar trends in the ocean have not been thoroughly identified. Using satellite observations of ocean chlorophyll a (Chl) concentration, we show that the surface ocean experienced a poleward greening from 2003 to 2022. Contemporaneously, the subtropical regions of the Northern Hemisphere experienced a decrease in Chl. As such, the latitudinal disparity in Chl, as documented by an inequality index, has been increasing over the past two decades, particularly in the Northern Hemisphere. Rising water temperatures may primarily influence the Chl trends. The increasing Chl inequality—marked by “greener green and bluer blue” waters—has the potential to cascade to higher trophic levels, with implications for the fisheries and economies of coastal nations.

DOI: adr9715

Source: https://www.science.org/doi/10.1126/science.adr9715