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| DOI | 10.1016/j.jes.2023.04.029 |
| Response of ocean acidification to atmospheric carbon dioxide removal | |
| 发表日期 | 2024 |
| ISSN | 1001-0742 |
| EISSN | 1878-7320 |
| 起始页码 | 140 |
| 卷号 | 140 |
| 英文摘要 | Artificial CO2 removal from the atmosphere (also referred to as negative CO2 emissions) has been proposed as a potential means to counteract anthropogenic climate change. Here we use an Earth system model to examine the response of ocean acidification to idealized atmospheric CO2 removal scenarios. In our simulations, atmospheric CO2 is assumed to increase at a rate of 1% per year to four times its pre-industrial value and then decreases to the pre-industrial level at a rate of 0.5%, 1%, 2% per year, respectively. Our results show that the annual mean state of surface ocean carbonate chemistry fields including hydrogen ion concentration ([H+ ]), pH and aragonite saturation state respond quickly to removal of atmospheric CO2 . However, the change of seasonal cycle in carbonate chemistry lags behind the decline in atmospheric CO2 . When CO2 returns to the pre-industrial level, over some parts of the ocean, relative to the pre-industrial state, the seasonal amplitude of carbonate chemistry fields is substantially larger. Simulation results also show that changes in deep ocean carbonate chemistry substantially lag behind atmospheric CO2 change. When CO2 returns to its pre-industrial value, the whole-ocean acidity measured by [H+ ] is 15%-18% larger than the pre-industrial level, depending on the rate of CO2 decrease. Our study demonstrates that even if atmospheric CO2 can be lowered in the future as a result of net negative CO2 emissions, the recovery of some aspects of ocean acidification would take decades to centuries, which would have important implications for the resilience of marine ecosystems. (c) 2023 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 英文关键词 | Carbon dioxide removal; Net negative CO 2 emission; Ocean acidification; Climate change; Earth system modeling |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001170625500001 |
| 来源期刊 | JOURNAL OF ENVIRONMENTAL SCIENCES
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290409 |
| 作者单位 | Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES); Zhejiang University |
| 推荐引用方式 GB/T 7714 | . Response of ocean acidification to atmospheric carbon dioxide removal[J],2024,140. |
| APA | (2024).Response of ocean acidification to atmospheric carbon dioxide removal.JOURNAL OF ENVIRONMENTAL SCIENCES,140. |
| MLA | "Response of ocean acidification to atmospheric carbon dioxide removal".JOURNAL OF ENVIRONMENTAL SCIENCES 140(2024). |
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