气候变化领域集成服务门户(CCPortal): Single source impacts on secondary pollutants using a Lagrangian reactive puff model: Comparison with photochemical grid models

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DOI	10.1016/j.atmosenv.2020.117664
	Single source impacts on secondary pollutants using a Lagrangian reactive puff model: Comparison with photochemical grid models
	Karamchandani P.; Vennam P.; Shah T.; Henn D.; Alvarez-Gomez A.; Yarwood G.; Morris R.; Brashers B.; Knipping E.; Kumar N.
发表日期	2020
ISSN	13522310
卷号	237
英文摘要	Recent updates to U.S. regulatory guidelines for modeling impacts of single sources to secondary pollutants, such as ozone (O3) and fine particulate matter (PM2.5), require the use of established photochemical models with a complete treatment of gas-phase and aerosol chemistry as the preferred method for a Tier 2 demonstration approach. Such models include photochemical grid models (PGMs), as well as Lagrangian puff models with the requisite treatment of processes governing the formation of secondary pollutants from their precursors. SCICHEM is an open source reactive puff model that includes treatments for gas, aerosol, and aqueous-phase chemistry that are comparable to those in PGMs. The dispersion component of SCICHEM is based on the state-of-the-science puff model, SCIPUFF (Second-order Closure Integrated Puff). The model is a valuable tool that requires fewer resources and setup cost to run than PGMs to calculate the impacts of a single source or a small number of sources on downwind ozone and PM2.5. This paper describes a model inter-comparison study of secondary pollutant impacts due to emissions from a hypothetical coal-fired power plant stack. The models compared in this study include SCICHEM and the two most commonly used PGMs, CMAQ and CAMx. Stacks are located in 4 separate regions of the U.S. with distinct differences in chemical environments and geographical features. The key inputs (hypothetical stack parameters and emission rates, meteorology) to the three models are based on a common dataset for consistency. The source impacts calculated by the PGMs are based on zero-out simulations (i.e., with and without the source of interest) as well as the source apportionment tools available in CAMx, while SCICHEM directly predicts source impacts in a single simulation. Annual simulations are conducted to determine the frequency distribution of source impacts over the 4 regions. The comparison of model results shows both similarities and differences in the frequencies and magnitudes of peak impacts predicted by the three models. There is good agreement among all models in their predictions of 98th and 99th percentile impacts. © 2020 Elsevier Ltd
英文关键词	Ozone; Photochemical grid models; SCICHEM; Secondary PM2.5; Single-source impacts
语种	英语
scopus关键词	Aerosols; Coal; Fossil fuel power plants; Geographical regions; Lagrange multipliers; Ozone; Wind effects; Coal-fired power plant; Fine particulate matter (PM2.5); Frequency distributions; Geographical features; Lagrangian puff models; Model inter comparisons; Regulatory guidelines; Second-order closure integrated puffs; Air pollution; coal; nitrate; ozone; sulfate; coal-fired power plant; dispersion; Lagrangian analysis; ozone; particle size; particulate matter; photochemistry; pollution incidence; source apportionment; aerosol; aqueous solution; Article; chemical environment; comparative study; dispersion; electric power plant; gas; meteorology; particulate matter; photochemistry; priority journal; Neptunia
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145035
作者单位	Ramboll, 7250 Redwood Boulevard, Suite 105, Novato, CA 94945, United States; Xator Corp, Princeton, NJ, United States; Contractor for Sonoma Technology, Inc., Petaluma, CA, United States; Ramboll, Lynnwood, WA, United States; Electric Power Research Institute, Washington, D.C, United States; Desert Research Institute (DRI), Reno, NV, United States
推荐引用方式 GB/T 7714	Karamchandani P.,Vennam P.,Shah T.,et al. Single source impacts on secondary pollutants using a Lagrangian reactive puff model: Comparison with photochemical grid models[J],2020,237.
APA	Karamchandani P..,Vennam P..,Shah T..,Henn D..,Alvarez-Gomez A..,...&Kumar N..(2020).Single source impacts on secondary pollutants using a Lagrangian reactive puff model: Comparison with photochemical grid models.Atmospheric Environment,237.
MLA	Karamchandani P.,et al."Single source impacts on secondary pollutants using a Lagrangian reactive puff model: Comparison with photochemical grid models".Atmospheric Environment 237(2020).