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首页> 外文期刊>Environmental Science & Technology >Bubble Stripping as a Tool To Reduce High Dissolved CO_2 in Coastal Marine Ecosystems
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Bubble Stripping as a Tool To Reduce High Dissolved CO_2 in Coastal Marine Ecosystems

机译：气泡汽提作为减少沿海海洋生态系统中高溶解二氧化碳的工具

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摘要

High dissolved CO_2 concentrations in coastal ecosystems are a common occurrence due to a combination of large ecosystem metabolism, shallow water, and long residence times. Many important coastal species may have adapted to this natural variability over time, but eutrophication and ocean acidification may be perturbing the water chemistry beyond the bounds of tolerance for these organisms. We are currently limited in our ability to deal with the geochemical changes unfolding in our coastal ocean. This study helps to address this deficit of solutions by introducing bubble stripping as a novel geochemical engineering approach to reducing high CO_2 in coastal marine ecosystems. We use a process-based model to find that air/sea gas exchange rates within a bubbled system are 1-2 orders of magnitude higher than within a nonbubbled system. By coupling bubbling-enhanced ventilation to a coastal ecosystem metabolism model, we demonstrate that strategically timed bubble plumes can mitigate exposure to high CO_2 under present-day conditions and that exposure mitigation is enhanced in the more acidic conditions predicted by the end of the century. We argue that shallow water CO_2 bubble stripping should be considered among the growing list of engineering approaches intended to increase coastal resilience in a changing ocean.
机译：由于大量的生态系统新陈代谢，浅水和长停留时间的结合，沿海生态系统中高溶解态CO_2浓度很常见。随着时间的推移，许多重要的沿海物种可能已经适应了这种自然变异性，但是富营养化和海洋酸化可能正在扰乱水化学，超出了对这些生物的耐受性范围。目前，我们应对沿海海洋中不断发生的地球化学变化的能力有限。这项研究通过引入气泡汽提作为减少沿海海洋生态系统中高CO_2的新型地球化学工程方法，来帮助解决这一解决方案的不足。我们使用基于过程的模型来发现，气泡系统中的空气/海洋气体交换速率比非气泡系统中的空气/海水交换速率高1-2个数量级。通过将鼓泡通风与沿海生态系统的新陈代谢模型耦合，我们证明了在当前条件下，定时定时的气泡羽流可以减轻暴露于高CO_2的风险，并且到本世纪末，在更酸性的条件下，缓解暴露的能力得到了增强。我们认为，应在越来越多的旨在增加变化的海洋中的沿海弹性的工程方法中考虑使用浅水CO_2气泡汽提技术。

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  • 来源
    《Environmental Science & Technology》 |2016年第7期|3790-3797|共8页
  • 作者

    David A. Koweek; David A. Mucciarone; Robert B. Dunbar;

  • 作者单位

    Department of Earth System Science, Stanford University, Stanford, California 94305, United States;

    Department of Earth System Science, Stanford University, Stanford, California 94305, United States;

    Department of Earth System Science, Stanford University, Stanford, California 94305, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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