Global‐through‐urban nested three‐dimensional simulation of air pollution with a 13,600‐reaction photochemical mechanism

Jacobson, Mark Z.; Ginnebaugh, Diana L.

doi:10.1029/2009jd013289

Cited by 19 publications

(11 citation statements)

References 52 publications

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“…Because their emission, secondary formation, transport and deposition mechanisms are highly complex and still unknown, a great number of studies on the development and application of air quality modeling are ongoing. Recently, Jacobson and Ginnebaugh (2010) developed a global-through-urban nested three-dimensional air pollution model that implements a large explicit photochemical mechanism with 4,675 gases and 13,626 tropospheric and stratospheric chemical reactions. The mechanism also includes one internally mixed aerosol and three hydrometeor categories that are size and chemistry resolved (17 components × 14 size bins for aerosols, 18 components × 30 size bins for cloud/precipitation liquid, cloud/precipitation ice, cloud/precipitation graupel).…”

Section: Introductionmentioning

confidence: 99%

Development of an aerosol chemical transport model RAQM2 and predictions of Northeast Asian aerosol mass, size, chemistry, and mixing type

Kajino¹,

Inomata²,

Sato³

et al. 2012

Preprint

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A new aerosol chemical transport model, Regional Air Quality Model 2 (RAQM2), was developed to simulate Asian air quality. We implemented a simple version of a modal-moment aerosol dynamics model (MADMS) and achieved a completely dynamic (non-equilibrium) solution of a gas-to-particle mass transfer over a wide range of aerosol diameters from 1 nm to super μm. To consider a variety of atmospheric aerosol properties, a category approach was utilized, in which the aerosols were distributed into 4 categories: Aitken mode (ATK), soot-free accumulation mode (ACM), soot aggregates (AGR), and coarse mode (COR). Condensation, evaporation, and Brownian coagulations for each category were solved dynamically. A regional-scale simulation (Δ x = 60 km) was performed for the entire year of 2006 covering the Northeast Asian region. Statistical analyses showed that the model reproduced the regional-scale transport and transformation of the major inorganic anthropogenic and natural air constituents within factors of 2 to 5. The modeled PM1/bulk ratios of the chemical components were consistent with the observations, indicating that the simulations of aerosol mixing types were successful. Non-sea salt SO42- mixed with ATK + ACM was the largest at Hedo in summer, whereas it mixed with AGR was substantial in cold seasons. Ninety-eight percent of the modeled NO3- was mixed with sea salt at Hedo, whereas 53.7% of the NO3- was mixed with sea salt at Gosan, located upwind toward the Asian continent. The condensation of HNO3 onto sea salt particles during transport over the ocean makes the difference in the NO3- mixing type at the two sites. Because the aerosol mixing type alters optical properties and cloud condensation nuclei activity, its accurate prediction and evaluation are indispensable for aerosol-cloud-radiation interaction studies

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Section: Introductionmentioning

confidence: 99%

Development of an aerosol chemical transport model RAQM2 and predictions of Northeast Asian aerosol mass, size, chemistry, and mixing type

Kajino¹,

Inomata²,

Sato³

et al. 2012

Preprint

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show abstract

“…Although comprehensive mechanisms such as MCM have 330 A. Baklanov et al: Online coupled regional meteorology chemistry models in Europe been incorporated into 3-D models (e.g. Jacobson and Ginnebaugh, 2010;Ying and Li, 2011), most 3-D models use reduced mechanisms for computational efficiency. Simplification can be achieved in a number of ways, e.g.…”

Section: Atmospheric Chemical Mechanisms: Gas and Aqueous-phasementioning

confidence: 99%

Online coupled regional meteorology chemistry models in Europe: current status and prospects

et al. 2014

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Published by Copernicus Publications on behalf of the European Geosciences Union. A. Baklanov et al.: Online coupled regional meteorology chemistry models in EuropeAbstract. Online coupled mesoscale meteorology atmospheric chemistry models have undergone a rapid evolution in recent years. Although mainly developed by the air quality modelling community, these models are also of interest for numerical weather prediction and regional climate modelling as they can consider not only the effects of meteorology on air quality, but also the potentially important effects of atmospheric composition on weather. Two ways of online coupling can be distinguished: online integrated and online access coupling. Online integrated models simulate meteorology and chemistry over the same grid in one model using one main time step for integration. Online access models use independent meteorology and chemistry modules that might even have different grids, but exchange meteorology and chemistry data on a regular and frequent basis. This article offers a comprehensive review of the current research status of online coupled meteorology and atmospheric chemistry modelling within Europe. Eighteen regional online coupled models developed or being used in Europe are described and compared. Topics discussed include a survey of processes relevant to the interactions between atmospheric physics, dynamics and composition; a brief overview of existing online mesoscale models and European model developments; an analysis on how feedback processes are treated in these models; numerical issues associated with coupled models; and several case studies and model performance evaluation methods. Finally, this article highlights selected scientific issues and emerging challenges that require proper consideration to improve the reliability and usability of these models for the three scientific communities: air quality, numerical meteorology modelling (including weather prediction) and climate modelling. This review will be of particular interest to model developers and users in all three fields as it presents a synthesis of scientific progress and provides recommendations for future research directions and priorities in the development, application and evaluation of online coupled models.

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“…Because their emission, secondary formation, transport and deposition mechanisms are highly complex and still poorly understood, a great number of studies on the development and application of air quality modeling are ongoing. Recently, Jacobson and Ginnebaugh (2010) developed a globalthrough-urban nested three-dimensional air pollution model that implements a large explicit photochemical mechanism with 4675 gases and 13 626 tropospheric and stratospheric chemical reactions. The mechanism also includes one internally mixed aerosol and three hydrometeor categories that are size and chemistry resolved (17 components × 14 size bins for aerosols, 18 components × 30 size bins for cloud/precipitation liquid, cloud/precipitation ice, and cloud/precipitation graupel).…”

Section: Introductionmentioning

confidence: 99%

Development of the RAQM2 aerosol chemical transport model and predictions of the Northeast Asian aerosol mass, size, chemistry, and mixing type

et al. 2012

View full text Add to dashboard Cite

Abstract.A new aerosol chemical transport model, the Regional Air Quality Model 2 (RAQM2), was developed to simulate the Asian air quality. We implemented a simple version of a triple-moment modal aerosol dynamics model (MADMS) and achieved a completely dynamic (nonequilibrium) solution of a gas-to-particle mass transfer over a wide range of aerosol diameters from 1 nm to super-µm. To consider a variety of atmospheric aerosol properties, a category approach was utilized in which the aerosols were distributed into four categories: particles in the Aitken mode (ATK), soot-free particles in the accumulation mode (ACM), soot aggregates (AGR), and particles in the coarse mode (COR). The aerosol size distribution in each category is characterized by a single mode. The condensation, evaporation, and Brownian coagulations for each mode were solved dynamically. A regional-scale simulation ( x = 60 km) was performed for the entire year of 2006 covering the Northeast Asian region. The modeled PM 1 /bulk ratios of the chemical components were consistent with observations, indicating that the simulated aerosol mixing types were consistent with those in nature. The non-sea-salt SO 2− 4 mixed with ATK + ACM was the largest at Hedo in summer, whereas the SO 2− 4 was substantially mixed with AGR in the cold seasons.Ninety-eight percent of the modeled NO − 3 was mixed with sea salt at Hedo, whereas 53.7 % of the NO − 3 was mixed with sea salt at Gosan, which is located upwind toward the Asian continent. The condensation of HNO 3 onto sea salt particles during transport over the ocean accounts for the difference in the NO − 3 mixing type at the two sites. Because the aerosol mixing type alters the optical properties and cloud condensation nuclei activity, its accurate prediction and evaluation are indispensable for aerosol-cloud-radiation interaction studies.

show abstract

Global‐through‐urban nested three‐dimensional simulation of air pollution with a 13,600‐reaction photochemical mechanism

Cited by 19 publications

References 52 publications

Development of an aerosol chemical transport model RAQM2 and predictions of Northeast Asian aerosol mass, size, chemistry, and mixing type

Development of an aerosol chemical transport model RAQM2 and predictions of Northeast Asian aerosol mass, size, chemistry, and mixing type

Online coupled regional meteorology chemistry models in Europe: current status and prospects

Development of the RAQM2 aerosol chemical transport model and predictions of the Northeast Asian aerosol mass, size, chemistry, and mixing type

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