Spatiotemporal high-resolution mapping of biological production in the Southern Ocean
Spatiotemporal high-resolution mapping of biological production in the Southern Ocean
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DOI：
10.1038/s43247-023-01067-y
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发表时间：
2023-12-18
影响因子：
7.9
通讯作者：
Watanabe，Yutaka W.
中科院分区：
文献类型：
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作者：
Pan，Xianliang L.;Lai，Xiangxing;Watanabe，Yutaka W.
南大洋被认为在全球碳和营养物的生物地球化学循环中发挥重要作用。由于目前的研究与理想状态之间存在巨大差距，目前尚不清楚那里的生物生产如何影响气候变化。在这里，我们提出了一个新的概念相结合的神经网络参数化的溶解无机碳与生物地球化学Argo浮标，同时显示时空分布的净群落生产和再供应的碳从深海溶解无机碳的变化的基础上。研究表明，南大洋的总净群落生产量为4.1 ± 0.3 Pg-C year-1，占全球海洋碳输出量的45%，比之前的估计高出20%。此外，自2010年代以来，南大洋的净群落生产量下降了0.8%，这表明它可能是对全球变暖的积极反馈。
The Southern Ocean is considered to play an important role in the global biogeochemical cycles of carbon and nutrients. It is still unclear how biological production there impacts climate change owing to the remarkable gap between the current and the ideal state of research. Here, we proposed a new concept of combining Neural Network based parameterization of dissolved inorganic carbon with Biogeochemical Argo floats, showing simultaneously spatiotemporal distributions of net community production and resupply of carbon from the deep ocean based on the dissolved inorganic carbon change. It indicated a total net community production of 4.1 ± 0.3 Pg-C year−1over the Southern Ocean, which accounts for 45% of global annual oceanic carbon export and is 20% higher than the previous estimates. Furthermore, net community production in the Southern Ocean has decreased by 0.8% year−1since the 2010s, indicating that it may be contributing as positive feedback to global warming.