Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-3641-2018 |
Modeling reactive ammonia uptake by secondary organic aerosol in CMAQ: application to the continental US | |
Zhu, Shupeng1; Horne, Jeremy R.1; Montoya-Aguilera, Julia2; Hinks, Mallory L.2; Nizkorodov, Sergey A.2; Dabdub, Donald1 | |
2018-03-13 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:5页码:3641-3657 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Ammonium salts such as ammonium nitrate and ammonium sulfate constitute an important fraction of the total fine particulate matter (PM2.5) mass. While the conversion of inorganic gases into particulate-phase sulfate, nitrate, and ammonium is now well understood, there is considerable uncertainty over interactions between gas-phase ammonia and secondary organic aerosols (SOAs). Observations have confirmed that ammonia can react with carbonyl compounds in SOA, forming nitrogen-containing organic compounds (NOCs). This chemistry consumes gas-phase NH3 and may therefore affect the amount of ammonium nitrate and ammonium sulfate in particulate matter (PM) as well as particle acidity. In order to investigate the importance of such reactions, a first-order loss rate for ammonia onto SOA was implemented into the Community Multiscale Air Quality (CMAQ) model based on the ammonia uptake coefficients reported in the literature. Simulations over the continental US were performed for the winter and summer of 2011 with a range of uptake coefficients (10(-3)-10(-5)). Simulation results indicate that a significant reduction in gas-phase ammonia may be possible due to its uptake onto SOA; domain-averaged ammonia concentrations decrease by 31.3% in the winter and 67.0% in the summer with the highest uptake coefficient (10(-3)). As a result, the concentration of particulate matter is also significantly affected, with a distinct spatial pattern over different seasons. PM concentrations decreased during the winter, largely due to the reduction in ammonium nitrate concentrations. On the other hand, PM concentrations increased during the summer due to increased biogenic SOA (BIOSOA) production resulting from enhanced acid-catalyzed uptake of isoprene-derived epoxides. Since ammonia emissions are expected to increase in the future, it is important to include NH3 + SOA chemistry in air quality models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427355300003 |
WOS关键词 | EASTERN NORTH-CAROLINA ; BROWN CARBON ; ATMOSPHERIC AMMONIA ; NITRATE FORMATION ; AIR-POLLUTION ; UNITED-STATES ; RECENT TRENDS ; ACID GASES ; PERFORMANCE ; EMISSIONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19522 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Irvine, Dept Mech & Aerosp Engn, Computat Environm Sci Lab, Irvine, CA 92697 USA; 2.Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA |
推荐引用方式 GB/T 7714 | Zhu, Shupeng,Horne, Jeremy R.,Montoya-Aguilera, Julia,et al. Modeling reactive ammonia uptake by secondary organic aerosol in CMAQ: application to the continental US[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(5):3641-3657. |
APA | Zhu, Shupeng,Horne, Jeremy R.,Montoya-Aguilera, Julia,Hinks, Mallory L.,Nizkorodov, Sergey A.,&Dabdub, Donald.(2018).Modeling reactive ammonia uptake by secondary organic aerosol in CMAQ: application to the continental US.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(5),3641-3657. |
MLA | Zhu, Shupeng,et al."Modeling reactive ammonia uptake by secondary organic aerosol in CMAQ: application to the continental US".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.5(2018):3641-3657. |
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