中文摘要：

为得到二氧化碳浓度变化影响下的辐射强迫值,建立了简化的大气层净辐射通量模型.基于辐射传递方程,这个模型可以计算二氧化碳浓度变化引起的大气层每一层净辐射通量以及辐射强迫值.与美国大气与环境研究中心（AER）的RRTM-LW长波辐射传输模型在同一因素下的计算结果进行比较,得到误差不超过1％.

英文摘要：

In order to achieve the radiative forcing caused by the change of carbon dioxide concentration,a simplified net radiation flux model of the atmosphere was established.Based on the radiative transfer equation,the model can calculate the radiative forcing and net radiation flux at each layer of the atmosphere caused by the change of concentration of carbon dioxide.Compared with the RRTM-LW long wave radiative transfer model developed by the American center for atmospheric and environmental research,under the same conditions the error is less than 1％.