地学前缘 ›› 2009, Vol. 16 ›› Issue (2): 339-346.

• 论文 • 上一篇    下一篇


二氧化碳在海洋深层水中隔离的数值模拟

  

  1. 1中国科学院 大气物理研究所 大气边界层物理和大气化学国家重点实验室, 北京 100029
    2中国科学院 研究生院, 北京 100049

  • 出版日期:2009-03-02 发布日期:2009-03-02
  • 作者简介:徐永福（1962—），男，博士，研究员，博士生导师，主要从事大气化学与全球环境变化研究。E-mail:xyf@mail.iap.ac.cn
  • 基金资助:

    中国科学院知识创新工程重要方向项目群(KZCX-2-YW-218);国家自然科学基金项目(40730106)

Numerical simulations of sequestration of CO2 in the deep water of the ocean.

  1. 1State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
    2Graduate School, Chinese Academy of Sciences, Beijing 100049, China

  • Online:2009-03-02 Published:2009-03-02

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摘要：

随着对大气中二氧化碳浓度的持续增加所产生的潜在全球气候变化问题的认识逐步加深,人们在进一步理解全球碳循环问题的同时,正在寻求遏止大气CO2浓度快速增加的方法。文章在讨论一些可能的途径后,着重探讨了作为其中一种选择的CO2海洋封存的有效性问题。使用北太平洋海洋环流模式,研究了人为隔离CO2在海洋中的行为。在北太平洋中选择了1个位置,在不同的深度人为投放CO2。模拟结果表明,隔离有效性随隔离的深度增加而增加。总的来说,当注入深度超过1 500 m,其海洋中隔离CO2在50 a后仍可达注入量的95％以上。当隔离深度超过2 000 m后,深度增加对隔离效果的影响变小,50 a后的差异均小于1％。

关键词: 减排增汇;碳循环;CO2海洋封存;北太平洋;数值模拟

Abstract:

With the recognition of the issue of potential global climate change caused by the continuing increase in atmospheric CO2，scientists are seeking for the method of how to retard rapidly increasing atmospheric CO2, while they are probing for the global carbon cycling. After discussing some possible approaches, this study emphasizes on exploring the effectiveness of sequestration of CO2 in the ocean as one of the options. A basinwide ocean general circulation model of the North Pacific is used to study the behaviour of the sequestered CO2. A location is chosen in the North Pacific, and CO2 is artificially injected into different depths. Simulated results show that the sequestration effectiveness increases with increasing injection depth. Overall, if the injection depth exceeds 1 500 m, the sequestered CO2 in the ocean maintains over 95% of the injected CO2 at the end of the 50 years of continuous injection. If the injection depth exceeds 2 000 m, the impact of further increase in injection depth on the sequestration effectiveness becomes small, and the difference in effectiveness is less than 1% after 50 years.

Key words:

reduction of emission and increase of sink; carbon cycle; ocean disposal of CO2; the North Pacific;numerical simulation

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