Modeled primary productivity and air-to-sea CO2 flux in the Pacific Ocean using ROMS

We implemented a Regional Ocean Modeling System (ROMS) configuration encompassing the entire North Pacific Ocean (45°S-65°N, 99°E-70°W), with a horizontal resolution of 1/8° (~12.5 km) and 20 sigma layers. For the LGM simulation, both the atmospheric forcing and the initial and boundary conditions were derived from the climatological output of the Community Earth System Model (CESM) (Thirumalai et al. 2024). The result is a annual mean.The unit for IPP is mg C m-2 d-1 and for air-to-sea CO2 flux is mmol C m-2 d-1.本研究搭建了一套区域海洋模拟系统（Regional Ocean Modeling System, ROMS）配置方案，覆盖整个北太平洋海域（南纬45°至北纬65°，东经99°至西经70°），水平分辨率为1/8°（约12.5千米），垂直方向设置20个σ层。针对末次冰盛期（Last Glacial Maximum, LGM）模拟试验，大气强迫场、初始场与边界场均取自社区地球系统模型（Community Earth System Model, CESM）的气候态输出结果（Thirumalai等，2024）。本次模拟所得结果为年平均场，其中IPP的单位为mg C m⁻² d⁻¹，海-气CO₂通量的单位为mmol C m⁻² d⁻¹。