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Pacific Ocean–originated anthropogenic carbon and its long-term variations in the South China Sea
Science Advances ( IF 11.7 ) Pub Date : 2024-09-13 , DOI: 10.1126/sciadv.adn9171 Zhixuan Wang 1 , Zhimian Cao 1 , Zhiqiang Liu 2 , Weidong Zhai 3 , Yaohua Luo 1 , Yuxin Lin 2 , Elliott Roberts 1 , Jianping Gan 4 , Minhan Dai 1
Science Advances ( IF 11.7 ) Pub Date : 2024-09-13 , DOI: 10.1126/sciadv.adn9171 Zhixuan Wang 1 , Zhimian Cao 1 , Zhiqiang Liu 2 , Weidong Zhai 3 , Yaohua Luo 1 , Yuxin Lin 2 , Elliott Roberts 1 , Jianping Gan 4 , Minhan Dai 1
Affiliation
Coastal oceans, traditionally seen as a conduit for transporting atmospheric carbon dioxide (CO 2 )–derived anthropogenic carbon (C ANT ) to open oceans, exhibit complex carbon exchanges at their interface. South China Sea (SCS) exemplifies this complexity, where interactions with the Pacific, particularly through Kuroshio intrusion, challenge the understanding of C ANT source and variability in a coastal ocean. Contrary to prevailing paradigm expectations, our high-resolution, long-term data reveal that C ANT in the SCS primarily originates from Pacific water injection across the Luzon Strait rather than atmospheric CO 2 invasion. Over the past two decades, the SCS has experienced increasing C ANT levels, with notable interannual fluctuations driven by El Niño and La Niña events influencing Kuroshio intrusion, generating anomalously high and low C ANT inventories, respectively. This highlights an overlooked C ANT transport pathway from open to coastal oceans, responsible for cumulative ocean acidification that has already affected coral reefs enriched in the SCS located west of the Coral Triangle.
更新日期：2024-09-13
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