Observational Contrains on the Global Atmospheric Co2 Budget
Observational Contrains on the Global Atmospheric Co2 Budget
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DOI：
10.1126/science.247.4949.1431
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发表时间：
1990-03
期刊：
影响因子：
56.9
通讯作者：
P. Tans;I. Fung;Taro Takahashi
中科院分区：
文献类型：
--
作者：
P. Tans;I. Fung;Taro Takahashi
将观测到的大气CO2浓度和海洋表面沃茨CO2分压数据结合起来，以确定全球重要的CO2源和汇。大气数据进行了比较与边界层浓度计算与传输场产生的大气环流模式（GCM）指定的源-汇分布。在模式中，观测到的南北大气浓度梯度可以保持只有当汇的CO2是在北方大于在南半球。观测到的北方半球表面沃茨和大气中的二氧化碳分压之间的差异太小，海洋不可能成为化石燃料二氧化碳的主要汇。因此，大量的CO2显然被陆地生态系统吸收。
Observed atmospheric concentrations of CO2 and data on the partial pressures of CO2 in surface ocean waters are combined to identify globally significant sources and sinks of CO2. The atmospheric data are compared with boundary layer concentrations calculated with the transport fields generated by a general circulation model (GCM) for specified source-sink distributions. In the model the observed north-south atmospheric concentration gradient can be maintained only if sinks for CO2 are greater in the Northern than in the Southern Hemisphere. The observed differences between the partial pressure of CO2 in the surface waters of the Northern Hemisphere and the atmosphere are too small for the oceans to be the major sink of fossil fuel CO2. Therefore, a large amount of the CO2 is apparently absorbed on the continents by terrestrial ecosystems.