> See p 3 of this powerpoint:
>
> http://www-new.mcs.anl.gov/climate/cwg/slides/ANL_CCW_Streets.ppt
>
> Aerosols are dominated by low-tech burning of fuels for heat, and by cheap,
> primitive factories and motors.
Isn't that just for black carbon rather than sulphur, and isn't black
carbon a positive forcing agent, and sulphur related aerosols are
responsible for cooling?
Biomass doesn't contain much sulphur, coal does.
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