The rise in atmospheric carbon dioxide (CO 2) concentrations caused by human activities is leading to global climate change, which poses a threat to human development and survival. This study analyzed the distribution of the ocean carbon flux with interannual changes and compared it with the climatological ocean carbon flux to deepen our understanding of carbon sources and sinks. To simulate global CO 2 concentrations for the years 2008-2010, the ocean carbon flux with interannual changes and the climatological ocean carbon flux were used to drive the GEOS-Chem model, an atmospheric chemical transport model. The simulated values were compared with the CO 2 concentrations at nine observation stations to explore the influence of interannual changes in the ocean carbon fluxes on the simulated CO 2 concentrations. The authors found that the difference between the two simulation results was greater in the Southern Hemisphere all year, and the difference in autumn was the largest. Compared with the observations, the simulated CO 2 concentration of the ocean carbon flux with interannual changes is closer to the observations, indicating that this simulation is more accurate. 摘要 人类活动引起大气CO 2 浓度升高导致全球气候变化,给人们生存和发展带来巨大的威胁。本研 究对有年际变化的海洋碳通量与气候态的海洋碳通量的分布特征进行对比分析,加深对于碳源 汇分布特征的理解。使用有年际变化的海洋碳通量与气候态的海洋碳通量分别驱动大气化学传 输模型GEOS-Chem模拟2008至2010年间全球CO 2 浓度,并将模拟值与9个观测站点CO 2 浓度比 较,以探究海洋碳通量的年际变化对模型模拟CO 2 浓度的影响。结果表明两种模拟结果在全年 的南半球差异较大,而在四个季节中秋季的差异最大。与观测对比得到有年际变化的海洋碳通 量模拟的CO 2 浓度更接近观测资料,模拟准确性更高。 ARTICLE HISTORY
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