title: Introduction to a special grouping of papers from the 2012 A&WMA International Specialty Conference, Aerosol and Atmospheric Optics: Visibility and Air Pollution.
authors.affiliation: Clarkson University, Potsdam, NY, USA.
authors.forename: Philip K
authors.initials: PK
authors.lastname: Hopke
authors.forename: Delbert J
authors.initials: DJ
authors.lastname: Eatough
mesh_terms: D000336:Aerosols; D000397:Air Pollution; D055620:Optical Phenomena
chemical_list: D000336:Aerosols