In summary, an increase in atmospheric aerosol load decreases air quality and reduces the amount of solar radiation reaching the surface. (ipcc.ch)
The Hadcm3 model has calculated the largest increase in temperature which may be attributed to the reduction of aerosol load (40 %) over the period 1990 - 1999 somewhere in NE Europe, other models do that more in Southern Europe. (realclimate.org)
Bourassa, A.E., A. Robock, et al. 2012: Large volcanic aerosol load in the stratosphere linked to Asian monsoon transport. (data.giss.nasa.gov)