利用中国第24次南极考察期间获取的南大洋上空走航式大气CO₂数据和大气红外探测器(AIRS)探测的辐射率, 进行基于纬度分类下的统计回归, 其结果作为物理反演的初始猜测场。通过逐线积分辐射传输模式, 利用AMSU大气温度廓线和AIRS中13个通道的辐射测值反演南大洋上空的大气CO₂浓度廓线, 与WDCGG提供的固定站点下的大气CO₂浓度进行比较, 反演精度随纬度的变化而变化, 从低纬到高纬相对误差分别为0.31%、1.17%、2.63%。与同期国外卫星产品CO₂/AIRS比较, 相对误差为1.11%、1.07%。

Basing on the shipboard measurements obtained during the 24th CHINARE campaigns and radiance of AIRS, we get the initial value from the statistical regression according to latitude-based classification. The atmospheric CO₂ vertical profile was computed by line-by-line radiative transfer model using the temperature from AMSU and radiance from the thirteen selected AIRS channels. The results were compared with measurements from WDCGG, which show the accuracy change with latitude and relative errors are 0.31%、1.17% and 2.63% from low to high latitude respectively. The results were compared with CO₂/AIRS from NASA, which show the relative errors are 1.11% and 1.07% respectively.