IPCC确定的几种未来大气CO2浓度水平对人为CO2排放的限制

用三维海洋碳循环模式和一个简单的陆地生物圈模式计算了IPCC(政府间气候变化委员会)未来大气CO2情景中海洋和生物圈的吸收，并结合土地变化的资料得出燃料的排放值。结果表明：尽管在所有的构想下，为了使大气中CO2浓度达到稳定必须减少排放，但对应不同的IPCC未来大气CO2情景，对人为CO2排放的限制是很不相同的。

The Limit to Anthropogenic Carbon Emissions under IPCC Scenarios

A three-dimensional ocean carbon cycle model and a simple terrestrial biosphere model are used to simulate anthropogenic CO2 uptake by the ocean and terrestrial biosphere under the IPCC (Intergovernmental Panel on Climate Change) scenarios for future atmospheric Pco2 levels. We estimate anthropogenic carbon emissions required to stabilize future atmospheric CO2 at various levels ranging from 350×10-6 to 750×10-6. All the stabilization scenarios require a substantial future reduction in emissions, but the amount to be reduction for each of the scenarios is quite difference.