This is for any of our writers with special interest on the above subject. Linkages between recent advances in the climate science are not all that well known by science writers and journalists.
Thus the absence of this huge story in the media.
This article from Nature provides a nice summary of the climate modeling study (PDF link here> )
This study from researchers at the University of Reading, UK provides additional support:
The impacts of European and Asian anthropogenic sulphur dioxide emissions on Sahel rainfall