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Geoengineered Ocean Vertical Water Exchange Can Accelerate Global Deoxygenation

机译:Geoengineed海洋垂直水交换可以加速全球脱氧

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摘要

Ocean deoxygenation is a threat to marine ecosystems. We evaluated the potential of two ocean intervention technologies, that is, "artificial downwelling (AD)" and "artificial upwelling (AU)," for remedying the expansion of Oxygen Deficient Zones (ODZs). The model-based assessment simulated AD and AU implementations for 80 years along the eastern Pacific ODZ. When AD was simulated by pumping surface seawater to the 178-457 m-depth range of the ODZ, vertically integrated oxygen increased by up to 4.5% in the deployment region. Pumping water from 457 m depth to the surface (i.e., AU), where it can equilibrate with the atmosphere, increased the vertically integrated oxygen by 1.03%. However, both simulated AD and AU increased biological production via enhanced nutrient supply to the sea surface, resulting in enhanced export production and subsequent aerobic reminer-alization also outside of the actual implementation region, and an ultimate net decline of global oceanic oxygen.
机译:海洋脱氧是对海洋生态系统的威胁。我们评估了两个海洋干预技术的潜力,即“人工沉船(AD)”和“人工上升(AU)”,用于弥补缺氧区(ODZ)的扩张。基于模型的评估模拟广告和AU实现沿东部太平洋ODZ 80年来。当通过将表面海水泵送到ODZ的178-457 m深度范围时,垂直集成的氧气在部署区域中增加了4.5%。将水从457米深度从457米到表面(即,Au),在它可以与大气平衡的情况下,将垂直整合的氧气增加1.03%。然而,两种模拟AD和Au通过增强的营养供应对海面增加了生物生产,导致出口产量增强和随后的有氧遗体共混,以及全球海洋氧的最终净衰退。

著录项

  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2134-2134|共1页
  • 作者

    E.Y. Feng; B. Su; A. Oschlies;

  • 作者单位

    GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany;

    GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany;

    GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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