2011
DOI: 10.5194/acp-11-6639-2011
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Modeling organic aerosols in a megacity: comparison of simple and complex representations of the volatility basis set approach

Abstract: The Weather Research and Forecasting model coupled with chemistry (WRF-Chem) is modified to include a volatility basis set (VBS) treatment of secondary organic aerosol formation. The VBS approach, coupled with SAPRC-99 gas-phase chemistry mechanism, is used to model gas-particle partitioning and multiple generations of gas-phase oxidation of organic vapors. In addition to the detailed 9-species VBS, a simplified mechanism using 2 volatility species (2-species VBS) is developed and tested for similarity to the … Show more

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Cited by 258 publications
(322 citation statements)
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References 61 publications
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“…In the version of COSMO-ART applied for the current study, there is the option of choosing between two different SOA modules: The SORGAM which is the default SOA module of COSMO-ART, analytically described in Schell et al (2001) and used in several applications (Grell et al, 2005;Stern et al, 2008;Elleman and Covert, 2009;Zhao et al, 2012;Chuang et al, 2011;Herwehe et al, 2011) and the VBS, which is the newly added SOA module in COSMO-ART, based on the framework proposed by Donahue et al (2006) and employed in other models (Robinson et al, 2007;Lane et al, 2008;Murphy and Pandis, 2009;Tsimpidi et al, 2010Tsimpidi et al, , 2011Shrivastava et al, 2011).…”
Section: Secondary Organic Aerosol Modulesmentioning
confidence: 99%
See 1 more Smart Citation
“…In the version of COSMO-ART applied for the current study, there is the option of choosing between two different SOA modules: The SORGAM which is the default SOA module of COSMO-ART, analytically described in Schell et al (2001) and used in several applications (Grell et al, 2005;Stern et al, 2008;Elleman and Covert, 2009;Zhao et al, 2012;Chuang et al, 2011;Herwehe et al, 2011) and the VBS, which is the newly added SOA module in COSMO-ART, based on the framework proposed by Donahue et al (2006) and employed in other models (Robinson et al, 2007;Lane et al, 2008;Murphy and Pandis, 2009;Tsimpidi et al, 2010Tsimpidi et al, , 2011Shrivastava et al, 2011).…”
Section: Secondary Organic Aerosol Modulesmentioning
confidence: 99%
“…An efficient way to describe the chemical evolution of the numerous semi-volatile organic compounds in models is to treat them as lumped species that span a range of effective saturation concentrations (Donahue et al, 2006). Recent model applications using different volatility basis set (VBS) approaches confirm their ability to provide improved predictions of OA concentration (Murphy and Pandis., 2009;Tsimpidi et al, 2010Tsimpidi et al, , 2011Shrivastava et al, 2011;Farina et al, 2010;Murphy et al, 2011;Bergström et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…First, the VBS model considers direct emissions of SVOCs and IVOCs from combustion sources and calculates the partitioning of primary OA (POA), SVOCs, and IVOCs by classifying these species on the basis of effective saturation concentrations ranging from 10 -2 to 10 6 µg m -3 . Emission profiles of POA, SVOCs, and IVOCs in the VBS model were taken from Shrivastava et al (2011). Second, the VBS model treats chemical aging of directly emitted SVOCs and IVOCs, as well as chemical aging of SVOCs and IVOCs generated by oxidation of volatile organic compounds (VOCs).…”
Section: Model System and Sensitivity Simulationsmentioning
confidence: 99%
“…Similar to other aerosol particles, SOA particles deteriorate air quality and visibility and impact the climate directly through absorption and scattering of radiation and indirectly through interactions with clouds (Monks et al, 2009). Despite recent advances in the measurement and modeling aspects of SOA and their precursors (e.g., Donahue et al, 2006;Ervens and Volkamer 15 2010;Hodzic et al, 2010a;de Gouw et al, 2011;Hodzic and Jimenez 2011;Shrivastava et al, 2011;Ahmadov et al, 2012;Isaacman et al, 2012;Yatavelli et al, 2012;Ehn et al, 2014;Ensberg et al, 2014;Fast et al, 2014;Lopez-Hilfiker et al, 2014;Williams et al, 2014), the full extent of SOA sources, formation processes, and therefore their impact on air quality, human health, and climate are not fully understood.…”
Section: Introductionmentioning
confidence: 99%