They also discuss some indications of higher aerosol cooling in the last decade, considered as a potential influence (although not dominant) in 21st century temperatures. (skepticalscience.com)
The references you gave for variance of insolation reaching the ground in this post are for decadal variations, in particular mid-century dimming (1950's -1980's), the well known cooling associated with high aerosols, and in fact discussed on SkS. (skepticalscience.com)
Their argument seems to be little more than «it's models (with assumed high aerosol offsets!) (judithcurry.com)