Contribution of biogenic sources to secondary organic aerosol in the summertime in Shaanxi, China

Yi, Xu; Chen, Yong-Gui; Gao, Jingsi; Zhu, Shengqiang; Ying, Qi; Hu, Jianlin; Wang, Peng; Feng, Liguo; Kang, Haibin; Wang, Dexiang

doi:10.1016/j.chemosphere.2020.126815

Cited by 6 publications

(7 citation statements)

References 40 publications

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“…However, the solubility of CHOCHO in ambient conditions is highly uncertain, since the studies that constrained CHOCHO solubility in ambient conditions are rare. Many recent regional and global modeling studies (Fu et al, 2008;Knote et al, 2014;Hu et al, 2017;Stadtler et al, 2018;Bates and Jacob, 2019;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020), as well as several works constrained by in situ field observations (Volkamer et al, 2007;Li et al, 2016;Ling et al, 2020), have reported that CHOCHO contributes 0 % to 25 % to SOA formation. This large variability resulted from the different conditions of the individual studies, focusing on different VOC precursors, biogenic (Li et al, 2016;Xu et al, 2020) vs. anthropogenic sources (Volkamer et al, 2007;Liu et al, 2020;Qiu et al, 2020), and using different simulation tools, such as 0-D box (Volkamer et al, 2007), Lagrangian , and 3-D transport models (Fu et al, 2008;Knote et al, 2014;Chan Miller et al, 2016;Li et al, 2016;Chan Miller et al, 2017;Sareen et al, 2017;Hu et al, 2017;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Many recent regional and global modeling studies (Fu et al, 2008;Knote et al, 2014;Hu et al, 2017;Stadtler et al, 2018;Bates and Jacob, 2019;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020), as well as several works constrained by in situ field observations (Volkamer et al, 2007;Li et al, 2016;Ling et al, 2020), have reported that CHOCHO contributes 0 % to 25 % to SOA formation. This large variability resulted from the different conditions of the individual studies, focusing on different VOC precursors, biogenic (Li et al, 2016;Xu et al, 2020) vs. anthropogenic sources (Volkamer et al, 2007;Liu et al, 2020;Qiu et al, 2020), and using different simulation tools, such as 0-D box (Volkamer et al, 2007), Lagrangian , and 3-D transport models (Fu et al, 2008;Knote et al, 2014;Chan Miller et al, 2016;Li et al, 2016;Chan Miller et al, 2017;Sareen et al, 2017;Hu et al, 2017;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020). These model studies were run with or without (Volkamer et al, 2007;Knote et al, 2014) a steady-state as-sumption for CHOCHO and employed different aerosol uptake treatments such as surface uptake only Li et al, 2016) or allowing simultaneous volume control processes (Knote et al, 2014;Ling et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

et al. 2022

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Abstract. Glyoxal (CHOCHO), the simplest dicarbonyl in the troposphere, is a potential precursor for secondary organic aerosol (SOA) and brown carbon (BrC) affecting air quality and climate. The airborne measurement of CHOCHO concentrations during the KORUS-AQ (KORea–US Air Quality study) campaign in 2016 enables detailed quantification of loss mechanisms pertaining to SOA formation in the real atmosphere. The production of this molecule was mainly from oxidation of aromatics (59 %) initiated by hydroxyl radical (OH). CHOCHO loss to aerosol was found to be the most important removal path (69 %) and contributed to roughly ∼ 20 % (3.7 µg sm−3 ppmv−1 h−1, normalized with excess CO) of SOA growth in the first 6 h in Seoul Metropolitan Area. A reactive uptake coefficient (γ) of ∼ 0.008 best represents the loss of CHOCHO by surface uptake during the campaign. To our knowledge, we show the first field observation of aerosol surface-area-dependent (Asurf) CHOCHO uptake, which diverges from the simple surface uptake assumption as Asurf increases in ambient condition. Specifically, under the low (high) aerosol loading, the CHOCHO effective uptake rate coefficient, keff,uptake, linearly increases (levels off) with Asurf; thus, the irreversible surface uptake is a reasonable (unreasonable) approximation for simulating CHOCHO loss to aerosol. Dependence on photochemical impact and changes in the chemical and physical aerosol properties “free water”, as well as aerosol viscosity, are discussed as other possible factors influencing CHOCHO uptake rate. Our inferred Henry's law coefficient of CHOCHO, 7.0×108 M atm−1, is ∼ 2 orders of magnitude higher than those estimated from salting-in effects constrained by inorganic salts only consistent with laboratory findings that show similar high partitioning into water-soluble organics, which urges more understanding on CHOCHO solubility under real atmospheric conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

et al. 2022

View full text Add to dashboard Cite

show abstract

“…However, the solubility of CHOCHO in ambient condition is highly uncertain since the studies that constrained CHOCHO solubility in ambient conditions are rare. Many recent regional and global modelling studies (Fu et al, 2008;Knote et al, 2014;Hu et al, 2017;Stadtler et al, 2018;Bates and Jacob, 2019;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020), as well as several studies constrained by in-situ field observations (Volkamer et al, 2007;Washenfelder et al, 2011;Li et al, 2016;Ling et al, 2020), have reported that CHOCHO contributes 0 to 25 % to SOA formation. This large variability resulted from the different conditions of the individual studies, focusing on different VOC precursors, biogenic (Li et al, 2016;Xu et al, 2020) vs anthropogenic (Volkamer et al, 2007;Liu et al, 2020;Qiu et al, 2020), and using different simulation tools, such as, 0-D box (Volkamer et al, 2007), Lagrangian (Washenfelder et al, 2011), and 3-D transport models (Fu et al, 2008;Knote et al, 2014;Chan Miller et al, 2016;Li et al, 2016;Chan Miller et al, 2017;Sareen et al, 2017;Hu et al, 2017;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Many recent regional and global modelling studies (Fu et al, 2008;Knote et al, 2014;Hu et al, 2017;Stadtler et al, 2018;Bates and Jacob, 2019;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020), as well as several studies constrained by in-situ field observations (Volkamer et al, 2007;Washenfelder et al, 2011;Li et al, 2016;Ling et al, 2020), have reported that CHOCHO contributes 0 to 25 % to SOA formation. This large variability resulted from the different conditions of the individual studies, focusing on different VOC precursors, biogenic (Li et al, 2016;Xu et al, 2020) vs anthropogenic (Volkamer et al, 2007;Liu et al, 2020;Qiu et al, 2020), and using different simulation tools, such as, 0-D box (Volkamer et al, 2007), Lagrangian (Washenfelder et al, 2011), and 3-D transport models (Fu et al, 2008;Knote et al, 2014;Chan Miller et al, 2016;Li et al, 2016;Chan Miller et al, 2017;Sareen et al, 2017;Hu et al, 2017;Liu et al, 2020;Qiu et al, 2020;Xu et al, 2020). These model studies were run with (Washenfelder et al, 2011) or without (Volkamer et al, 2007;Knote et al, 2014) steady-state assumption for CHOCHO, and employed different aerosol uptake treatments such as surface uptake only (Washenfelder et al, 2011;Li et al, 2016) or allowing simultaneous volume control processes (Knote et al, 2014;Ling et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Field observational constraints on the controllers in glyoxal (CHOCHO) loss to aerosol

Kim

Cho

Jeong

et al. 2021

Preprint

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Abstract. Glyoxal (CHOCHO), the simplest dicarbonyl in the troposphere, is an important precursor for secondary organic aerosol (SOA) and brown carbon (BrC) affecting air-quality and climate. The airborne measurement of CHOCHO concentrations during the KORUS-AQ (KORea-US Air Quality study) campaign in 2016 enables detailed quantification of loss mechanisms, pertaining to SOA formation in the real atmosphere. The production of this molecule was mainly from oxidation of aromatics (59 %) initiated by hydroxyl radical (OH), of which glyoxal forming mechanisms are relatively well constrained. CHOCHO loss to aerosol was found to be the most important removal path (69 %) and contributed to roughly ~20 % (3.7 μg sm−3 ppmv−1 hr−1, normalized with excess CO) of SOA growth in the first 6 hours in Seoul Metropolitan Area. To our knowledge, we show the first field observation of aerosol surface-area (Asurf)-dependent CHOCHO uptake, which diverges from the simple surface uptake assumption as Asurf increases in ambient condition. Specifically, under the low (high) aerosol loading, the CHOCHO effective uptake rate coefficient, keff,uptake, linearly increases (levels off) with Asurf, thus, the irreversible surface uptake is a reasonable (unreasonable) approximation for simulating CHOCHO loss to aerosol. Dependency of photochemical impact, as well as aerosol viscosity, are discussed as other possible factors influencing CHOCHO uptake rate. Our inferred Henry's law coefficient of CHOCHO, 7.0 × 108 M atm−1, is ~2 orders of magnitude higher than those estimated from salting-in effects constrained by inorganic salts only, which urges more understanding on CHOCHO solubility under real atmospheric conditions.

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“…The long‐distance transmission of aerosols will further lead to the mixing and interaction of components, which will then have a series of effects on the atmosphere and biological cycles (Huang et al., 2020). However, due to a lack of ground‐based observations and model simulation, there are scarce comprehensive studies that have focused on analyzing the aerosol properties and radiative effects in the transition region of urban‐forest East China (Oduber et al., 2020; Xu et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Uncertainties of Simulated Aerosol Direct Radiative Effect Induced by Aerosol Chemical Components: A Measurement‐Based Perspective From Urban‐Forest Transition Region in East China

et al. 2021

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Contribution of biogenic sources to secondary organic aerosol in the summertime in Shaanxi, China

Cited by 6 publications

References 40 publications

Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

Field observational constraints on the controllers in glyoxal (CHOCHO) loss to aerosol

Uncertainties of Simulated Aerosol Direct Radiative Effect Induced by Aerosol Chemical Components: A Measurement‐Based Perspective From Urban‐Forest Transition Region in East China

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