However, this doesn't translate to a satellite - based estimate of total aerosol forcing because many of these studies only cover indirect effects. (julesandjames.blogspot.ru)
Nevertheless, the similarity between results from inverse and forward estimates of aerosol forcing strengthens confidence in estimates of total aerosol forcing, despite remaining uncertainties. (ipcc.ch)
For total aerosol forcing using the AR4 uncertainty ranges for individual components, the 90 % confidence range, by quadrature, is ± 0.86 W / m2 (see Table 4). (link.springer.com)