Multipollutant Air Quality Management

Public health and components of particulate matter: The changing assessment of black carbon

“…The measurement of BC in such cases would be confounded by the external mixing of the liquid layer, which could contain the toxic species of concern. BC resides in a multipollutant (Chow et al, 2010a;Hidy and Pennell, 2010) atmosphere with a variety of modifying processes taking place after they are emitted from sources (e.g., Jathar et al, 2014). In the case of the OC component emitted with BC, many species are identified that readily change with aging of the particles in the atmosphere (Robinson et al, 2010).…”

Energy supplies and future engines for land, sea, and air

“…This requires a multipollutant/multieffect air quality management strategy (Chow et al, 2010;Chow and Watson, 2011;Hidy et al, 2011;Hidy and Pennell, 2010). Transportation biofuels may reduce CO 2 emissions over their life cycles (Agusdinata et al, 2011;Hossain and Davies, 2010;Hsu et al, 2010;Meyer et al, 2011;Ou et al, 2010;Yan et al, 2010;Yu and Tao, 2009;Zhai et al, 2009), but they may result in increased gaseous and particulate pollutant emissions (Betha and Balasubramanian, 2011;Bugarski et al, 2010;Di et al, 2009; Guarieiro et al, 2009;Liu et al, 2009;Yanowitz and McCormick, 2009).…”

Stratospheric ozone, global warming, and the principle of unintended consequences—An ongoing science and policy story

“…Policy evolution was supported by the merger of science, regulatory action, and industrial cooperation to resolve stratospheric O 3 loss. Climate forcing, now being addressed as an extension of regulatory policy (Chow et al, 2010;Chow and Watson, 2011;Hidy et al, 2011;Hidy and Pennell, 2010;Unger, 2012), was an unanticipated addition to the statospheric O 3 issue. Emerging opportunities for more benign refrigerants are identified in the critical review, along with some of the drawbacks of these new substances.…”