Estimation for Location-specific Marginal Benefits for Primary and Precursor PM2.5 Emissions using the Adjoint of CMAQ. Amanda Pappin, Shunliu Zhao, Marjan Soltanzadeh, Burak Y. Oztaner, AMIR HAKAMI, Masoud Naseri, Mieczyslaw Szyszkowicz, Rick Burnett, Matt Turner, Shannon Capps, Daven Henze, Peter B. Percell, Jaroslav Resler, Jesse Bash, Sergey Napelenok, David Fahey, Rob Pinder, Armistead G Russell, Athanasios Nenes, Jaemeen Baek, Gregory Carmichael, Charles Stanier, Adrian Sandu, Tianfeng Chai, Daewon Byun, Carleton University