海洋碳循环

IF 15.5 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
T. DeVries
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引用次数: 17

摘要

海洋含有大量的碳,它通过海气界面不断地与大气交换。由于其巨大的规模和与大气相对快速的碳交换,海洋控制着大气中的二氧化碳浓度,从而在数万年到数千年的时间尺度上控制着地球的气候。这篇综述考察了海洋碳循环的基本功能,表明海洋碳储量主要取决于海洋的质量、海水中二氧化碳的化学缓冲作用,以及将碳吸收到海洋深层的溶解度和生物泵的作用,在那里碳可以被隔离数十年至数千年。在过去几十年里,海洋吸收了大约25%的人为二氧化碳排放,在减缓气候变化的影响方面也发挥着关键作用。然而,这也会导致海洋酸化,降低海洋的化学缓冲能力及其未来吸收二氧化碳的能力。这篇综述以海洋碳循环不确定的未来以及这种不确定性带来的科学挑战作为结尾。《环境与资源年鉴》第47卷的最终在线出版日期预计为2022年10月。修订后的估计数请参阅http://www.annualreviews.org/page/journal/pubdates。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Ocean Carbon Cycle
The ocean holds vast quantities of carbon that it continually exchanges with the atmosphere through the air-sea interface. Because of its enormous size and relatively rapid exchange of carbon with the atmosphere, the ocean controls atmospheric CO2 concentration and thereby Earth's climate on timescales of tens to thousands of years. This review examines the basic functions of the ocean's carbon cycle, demonstrating that the ocean carbon inventory is determined primarily by the mass of the ocean, by the chemical buffering of CO2 in seawater, and by the action of the solubility and biological pumps that draw carbon into the ocean's deeper layers, where it can be sequestered for decades to millennia. The ocean also plays a critical role in moderating the impacts of climate change by absorbing about 25% of anthropogenic CO2 emissions over the past several decades. However, this also leads to ocean acidification and reduces the chemical buffering capacity of the ocean and its future ability to take up CO2. This review closes with a look at the uncertain future of the ocean carbon cycle and the scientific challenges that this uncertainty brings. Expected final online publication date for the Annual Review of Environment and Resources, Volume 47 is October 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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来源期刊
Annual Review of Environment and Resources
Annual Review of Environment and Resources 环境科学-环境科学
CiteScore
24.10
自引率
1.80%
发文量
33
审稿时长
>24 weeks
期刊介绍: The Annual Review of Environment and Resources, established in 1976, offers authoritative reviews on key environmental science and engineering topics. It covers various subjects, including ecology, conservation science, water and energy resources, atmosphere, oceans, climate change, agriculture, living resources, and the human dimensions of resource use and global change. The journal's recent transition from gated to open access through Annual Reviews' Subscribe to Open program, with all articles published under a CC BY license, enhances the dissemination of knowledge in the field.
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