The carbonate system in the North Sea: Sensitivity and model validation
The carbonate system in the North Sea: Sensitivity and model validation
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DOI：
10.1016/j.jmarsys.2012.04.006
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发表时间：
2012-10-01
影响因子：
2.8
通讯作者：
Allen, J. Icarus
中科院分区：
文献类型：
--
作者：
Artioli, Yuri;Blackford, Jeremy C.;Allen, J. Icarus
海洋在调节气候、吸收二氧化碳、扰动碳酸盐系统和导致海水pH缓慢下降等方面发挥着重要作用，了解陆架海域碳酸盐系统的动态变化对评估海洋酸化（OA）对这些具有重要社会意义的生态系统的影响是必要的。复杂的水动力学和生态系统耦合模型提供了一种捕捉这些地区的显着异质性的方法。然而，严格的验证是必不可少的，以正确评估这些模型的可靠性。耦合模型POLCOMS ERSEM已在西北欧大陆架实施了一个新的参数化碱度明确占河流输入和生物过程的影响。该模型与CANOBA的北海数据进行了类似的比较。该模型对主要变量，物理（温度和盐度），生物地球化学（营养盐）和碳酸盐系统（溶解无机碳和总碱度）显示出良好的合理一致性，但对衍生变量pH和pCO（2）的模拟尚未完全令人满意。这种高度不确定性主要归因于河流强迫和初级生产。这项研究表明，该模型是一个有用的工具，提供有关海洋酸化情景的信息，但pH值和pCO（2）的不确定性需要减少，特别是当OA对生态系统功能的影响包括在模型系统。(C)2012爱思唯尔有限公司版权所有。
The ocean plays an important role in regulating the climate, acting as a sink for carbon dioxide, perturbing the carbonate system and resulting in a slow decrease of seawater pH.Understanding the dynamics of the carbonate system in shelf sea regions is necessary to evaluate the impact of Ocean Acidification (OA) in these societally important ecosystems. Complex hydrodynamic and ecosystem coupled models provide a method of capturing the significant heterogeneity of these areas. However rigorous validation is essential to properly assess the reliability of such models. The coupled model POLCOMS ERSEM has been implemented in the North Western European shelf with a new parameterization for alkalinity explicitly accounting for riverine inputs and the influence of biological processes. The model has been validated in a like with like comparison with North Sea data from the CANOBA dataseL The model shows good to reasonable agreement for the principal variables, physical (temperature and salinity), biogeochemical (nutrients) and carbonate system (dissolved inorganic carbon and total alkalinity), but simulation of the derived variables, pH and pCO(2), are not yet fully satisfactory. This high uncertainty is attributed mostly to riverine forcing and primary production. This study suggests that the model is a useful tool to provide information on Ocean Acidification scenarios, but uncertainty on pH and pCO(2) needs to be reduced, particularly when impacts of OA on ecosystem functions are included in the model systems. (C) 2012 Elsevier B.V. All rights reserved.