Here, we investigate the seasonal variability in the dissolved inorganic carbon (DIC) cycle in the Northwest Pacific using a high-resolution biogeochemical and carbon model coupled with an operational ocean model. Results show that the contribution to DIC from air–sea CO 2 exchange is generally offset by vertical mixing at the surface at all latitudes, with some seasonal variation. Biological processes in subarctic regions are evident at the surface, whereas in the subtropical region these processes take place within the euphotic layer and then DIC consumption deepens southward with latitude. Such latitudinal differences in biological processes lead to marked horizontal and vertical contrasts in the distribution of DIC, with modulation by horizontal and vertical advection–diffusion processes.

中文翻译：

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使用生物地球化学和碳模型以及业务海洋模型评估西北太平洋无机海洋碳循环的季节性变化

在这里，我们使用高分辨率生物地球化学和碳模型以及可操作的海洋模型研究了西北太平洋溶解无机碳 (DIC) 循环的季节性变化。结果表明，海气 CO 2 交换对 DIC 的贡献通常被所有纬度的地表垂直混合所抵消，并有一些季节性变化。亚北极地区的生物过程在地表很明显，而在亚热带地区，这些过程发生在透光层内，然后 DIC 消耗随着纬度向南加深。生物过程中的这种纬度差异导致 DIC 分布的显着水平和垂直对比，并受到水平和垂直平流扩散过程的调制。