初学者求助：怎样用模式模拟直接辐射强迫DRF？

0727

最近用模式(GEOS-Chem)模拟气溶胶光学厚度和辐射强迫，得到了辐射的结果（节选一些变量如下所示）
float RADMAP-S__FSWBATA ( Alt-000, Lat-000, Lon-000 )
         long_name :    Clear TOA SW All-sky
         unit : W/m2

      float RADMAP-S__FSWPMTA ( Alt-000, Lat-000, Lon-000 )
         long_name :    All aerosol TOA SW All-sky
         unit : W/m2

      float RADMAP-S__FSWBASA ( Alt-000, Lat-000, Lon-000 )
         long_name :    Clear Surface SW All-sky
         unit : W/m2

      float RADMAP-S__FSWPMSA ( Alt-000, Lat-000, Lon-000 )
         long_name :    All aerosol Surface SW All-sky
         unit : W/m2

      float RADMAP-S__FLWBATA ( Alt-000, Lat-000, Lon-000 )
         long_name :    Clear TOA LW All-sky
         unit : W/m2

后来看到了一个文章，说模拟得到的结果是直接辐射效应DRE?而非直接辐射强迫？是这样的吗？（文章摘要如下）

The direct radiative effect (DRE) of aerosols, which is the instantaneous radiative impact of all atmospheric particles on the Earth's energy balance, is sometimes confused with the direct radiative forcing (DRF), which is the change in DRE from pre-industrial to present-day (not including climate feedbacks). In this study we couple a global chemical transport model (GEOS-Chem) with a radiative transfer model (RRTMG) to contrast these concepts. We estimate a global mean all-sky aerosol DRF of −0.36 Wm−2 and a DRE of −1.83 Wm−2 for 2010. Therefore, natural sources of aerosol (here including fire) affect the global energy balance over four times more than do present-day anthropogenic aerosols. If global anthropogenic emissions of aerosols and their precursors continue to decline as projected in recent scenarios due to effective pollution emission controls, the DRF will shrink (−0.22 Wm−2 for 2100). Secondary metrics, like DRE, that quantify temporal changes in both natural and anthropogenic aerosol burdens are therefore needed to quantify the total effect of aerosols on climate.

那想要得到直接辐射强迫DRF要再进行什么处理呢？欢迎交流，恳请解答，谢谢！