Response of ocean acidification to atmospheric carbon dioxide removal.
Response of ocean acidification to atmospheric carbon dioxide removal.
复制标题
海洋酸化对大气二氧化碳去除的响应。
DOI：
10.1016/j.jes.2023.04.029
复制
发表时间：
2023
影响因子：
6.9
通讯作者：
Guibin Jiang
中科院分区：
文献类型：
--
作者：
Jiu Jiang;Long Cao;Xiaoyuan Jin;Zechen Yu;Han Zhang;Jianjie Fu;Guibin Jiang
人工去除大气中的二氧化碳(也称为二氧化碳负排放)已被认为是应对人为气候变化的一种潜在手段。在这里，我们使用一个地球系统模型来研究海洋酸化对理想化的大气二氧化碳去除情景的响应。在我们的模拟中，假设大气中的二氧化碳以每年1%的速度增加到工业化前的4倍，然后分别以每年0.5%、1%、2%的速度下降到工业化前的水平。结果表明，表层海洋碳酸盐化学场的年平均状态，包括氢离子浓度([H+])、pH和文石饱和度，对大气CO2的去除响应较快。但碳酸盐化学的季节变化滞后于大气CO2的下降。当二氧化碳回到工业化前的水平时，在海洋的某些部分，相对于工业化前的状态，碳酸盐化学场的季节性幅度要大得多。模拟结果还表明，深海碳酸盐化学的变化在很大程度上滞后于大气CO2的变化。当二氧化碳恢复到工业化前的值时，由[H+]测量的全海洋酸度比工业化前的水平高15%-18%，这取决于二氧化碳的减少速度。我们的研究表明，即使未来大气中的二氧化碳可以因为二氧化碳净排放量为负而降低，海洋酸化的某些方面的恢复也需要几十年到几个世纪的时间，这将对海洋生态系统的弹性产生重要影响。
Artificial CO2removal from the atmosphere (also referred to as negative CO2emissions) 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 CO2removal scenarios. In our simulations, atmospheric CO2is 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 CO2returns 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 CO2change. When CO2returns 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 CO2decrease. Our study demonstrates that even if atmospheric CO2can be lowered in the future as a result of net negative CO2emissions, the recovery of some aspects of ocean acidification would take decades to centuries, which would have important implications for the resilience of marine ecosystems.
影响因子：
5.1
作者：
Keller, David P.;Lenton, Andrew;Zickfeld, Kirsten
通讯作者：
Zickfeld, Kirsten
影响因子：
4.3
作者：
Eby, M.;Weaver, A. J.;Zhao, F.
通讯作者：
Zhao, F.