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首页> 外文期刊>Journal of oceanography >Uptake mechanism of anthropogenic CO2 in the Kuroshio Extension region in an ocean general circulation model
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Uptake mechanism of anthropogenic CO2 in the Kuroshio Extension region in an ocean general circulation model

机译：海洋总环流模型中黑潮延伸区人为CO 2的吸收机理

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The uptake mechanism of anthropogenic CO2 in the Kuroshio Extension is examined by a Lagrangian approach using a biogeochemical model embedded in an ocean general circulation model. It is found that the uptake of anthropogenic CO2 is caused mainly by the increase of pCO2 dependency of seawater on temperature, which is caused by greater dissolved inorganic carbon concentration in the modern state than in the pre-industrial state. In contrast with the view of previous studies, the effect of the vertical entrainment, which brings waters that last contacted the atmosphere with the past lower CO2 concentration, is comparatively small. Winter uptake of anthropogenic CO2 increases with the rise of the atmospheric CO2 level, while summer uptake is relatively stable, resulting in a larger seasonal cycle of the uptake. This increase is significant, especially in the Kuroshio Extension region. It is newly suggested that this increase in the Kuroshio Extension region is largely caused by the combined effects of the increased pCO2 dependency of the sea water on the temperature and the seasonal difference in cooling.
机译：通过使用海洋总环流模型中嵌入的生物地球化学模型的拉格朗日方法，研究了黑潮延伸区人为二氧化碳的吸收机制。发现人为二氧化碳的吸收主要是由于海水对温度的pCO2依赖性增加所致，这是由于现代状态下的溶解性无机碳浓度高于工业化前状态所致。与以前的研究相反，垂直夹带的作用相对较小，这种夹带使最后接触大气的水过去具有较低的CO2浓度。冬季，人为CO2的吸收随大气CO2水平的升高而增加，而夏季的吸收相对稳定，从而导致较大的季节性吸收周期。这一增长是显着的，尤其是在黑潮延伸地区。最近有人提出，黑潮延伸地区的这种增加主要是由于海水对温度的pCO2依赖性增加和冷却的季节差异共同造成的。

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