Aerosol Indirect Effect on Biogeochemical Cycles and Climate

http://www.sciencemag.org/content/334/6057/794.abstract?sid=92471eb9-7 313-4928-b1a6-cece0ff753a1

Lay discussion of the significance of this research:

http://www.cosmosmagazine.com/news/4962/aerosols-give-rise-a-new-probl em-combating-global-warming?page=0%2C1

"We don't understand these biogeochemical effects very well as they are poorly studied, but they could be quite important. Carbon dioxide has increased by 100 parts per million (ppm) since preindustrial times: this could have been 7 to 50ppm higher without aerosols," said Mahowald.