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Wang, Z.; Maeda, Tsuneaki; Hayashi, Masayasu; Hsiao, Ling-Feng; Liu, K.-Y.

doi:10.1023/a:1013833217916

Cited by 121 publications

(48 citation statements)

References 4 publications

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“…The Nested Air Quality Prediction Monitor System (NAQPMS; Z Wang et al, 2001) was applied to simulate the fine particles and the related species with a horizontal resolution of 45 km over East Asia and 20 vertical layers in a sigma coordinate during APHH-Beijing. The advection algorithm as well as the diffusion processes in NAQPMS are based on Walcek and Aleksic (1998) and Byun and Dennis (1995), respectively.…”

Section: Setup Of Naqpms Modelmentioning

confidence: 99%

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Role of Ammonia on the Feedback Between AWC and Inorganic Aerosol Formation During Heavy Pollution in the North China Plain

et al. 2019

Earth and Space Science

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Atmospheric NH3 plays a vital role not only in the environmental ecosystem but also in atmosphere chemistry. To further understand the effects of NH3 on the formation of haze pollution in Beijing, ambient NH3 and related species were measured and simulated at high resolutions during the wintertime Air Pollution and Human Health‐Beijing (APHH‐Beijing) campaign in 2016. We found that the total NHx (gaseous NH3+particle NH4+) was mostly in excess of the SO42−‐NO3−‐NH4+‐water equilibrium system during our campaign. This NHx excess made medium aerosol acidity, with the median pH value being 3.6 and 4.5 for polluted and nonpolluted conditions, respectively, and enhanced the formation of particle phase nitrate. Our analysis suggests that NH4NO3 is the most important factor driving the increasing of aerosol water content with NO3− controlling the prior pollution stage and NH4+ the most polluted stage. Increased formation of NH4NO3 under excess NHx, especially during the nighttime, may trigger the decreasing of aerosol deliquescence relative humidity even down to less than 50% and hence lead to hygroscopic growth even under RH conditions lower than 50% and the wet aerosol particles become better medium for rapid heterogeneous reactions. A further increase of RH promotes the positive feedback “aerosol water content‐heterogeneous reactions” and ultimately leads to the formation of severe haze. Modeling results by Nested Air Quality Prediction Monitor System (NAQPMS) show the control of 20% NH3 emission may affect 5–11% of particulate matter PM2.5 formation under current emissions conditions in the North China Plain.

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Section: Setup Of Naqpms Modelmentioning

confidence: 99%

“…The simulation of heterogeneous chemical processes involved 14 chemical compounds and 28 reactions on the surface of dust, sea salt, sulfate, and black carbon particles . More detailed descriptions can be found in Wang et al (2001) and Li et al (2012).…”

Section: Setup Of Naqpms Modelmentioning

confidence: 99%

Role of Ammonia on the Feedback Between AWC and Inorganic Aerosol Formation During Heavy Pollution in the North China Plain

et al. 2019

Earth and Space Science

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“…Applying the street canyon model to Via Ponte alle Mosse Applying the diffusion model of road traffic PM in the Via Ponte alle Mosse canyon was carried out by using the empirical street canyon model (Dabberdt et al 1973), taking into account a number of more updated applications and case studies (Wang et al 2001;De Paul and Sheih 1986;Nakamura and Oke 1988;Hunter et al 1992). The street canyon model is an integral part of the APRAC/3 code (Kastner-Klein and Plate 1995).…”

Section: Methodsmentioning

confidence: 99%

Simulating the production and dispersion of environmental pollutants in aerosol phase in an urban area of great historical and cultural value

Librando

Tringali

Calastrini

et al. 2008

Environ Monit Assess

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Mathematical models were developed to simulate the production and dispersion of aerosol phase atmospheric pollutants which are the main cause of the deterioration of monuments of great historical and cultural value. This work focuses on Particulate Matter (PM) considered the primary cause of monument darkening. Road traffic is the greatest contributor to PM in urban areas. Specific emission and dispersion models were used to study typical urban configurations. The area selected for this study was the city of Florence, a suitable test bench considering the magnitude of architectural heritage together with the remarkable effect of the PM pollution from road traffic. The COPERT model, to calculate emissions, and the street canyon model coupled with the CALINE model, to simulate pollutant dispersion, were used. The PM concentrations estimated by the models were compared to actual PM concentration measurements, as well as related to the trend of some meteorological variables. The results obtained may be defined as very encouraging even the models correlated poorly: the estimated concentration trends as daily averages moderately reproduce the same trends of the measured values.

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“…We used the Nested Air Quality Prediction Modeling System (NAQPMS) [25,26] to simulate the transport of dust and its interaction with anthropogenic pollutants over the eastern part of Asia, as shown in Figure 1, with a horizontal resolution of 45 km, and 20 vertical layers in a sigma coordinate. The Weather Research and Forecasting model (WRF version 3.9.1.1) was used to simulate the To validate the air-quality-model results, we also used the hourly PM 2.5 (PM with Dp ≤ 2.5 µm) and PM 10 (PM with Dp ≤ 10 µm) mass concentrations in Beijing, China, and Seoul, Korea, measured by the Ministry of Ecology and Environment of the People's Republic of China and Korean Ministry of Environment, respectively.…”

Section: Chemical Transport Modelmentioning

confidence: 99%

Section: Chemical Transport Modelmentioning

confidence: 99%

Dust Heterogeneous Reactions during Long-Range Transport of a Severe Dust Storm in May 2017 over East Asia

et al. 2019

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Dust aerosol has important climate and environmental effects, which could be changed by internally mixing with anthropogenic aerosol as a result of heterogeneous reactions; however, the importance of these reactions is not fully understood yet. In this study, synergetic observations and an air quality model were used to analyze the transport of a severe dust storm and its impacts on nitrate and sulfate levels over East Asia between 3 and 11 May 2017. The model successfully reproduced the occurrence and transport of the dust storm compared to dust RGB imageries of the Himawari-8 satellite and dust extinction coefficients observed by LIDAR. The model also reasonably simulated the variations of observed nitrate and sulfate concentrations, and the results indicated that the dust heterogeneous reactions were dominant pathways for nitrate formation, but they had limited contribution for sulfate in both fine and coarse mode in Fukuoka, Japan. Dust nitrate formed rapidly after leaving China, and the highest period-averaged concentration of dust nitrate (>5 μg m−3) was shown over the Yellow Sea. Based on model results; we found that the mass ratio of dust nitrate to dust aerosol could reach 10% over the Pacific Ocean. Our results confirmed the importance of heterogeneous reactions on compositions of dust particles.

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Cited by 121 publications

References 4 publications

Role of Ammonia on the Feedback Between AWC and Inorganic Aerosol Formation During Heavy Pollution in the North China Plain

Role of Ammonia on the Feedback Between AWC and Inorganic Aerosol Formation During Heavy Pollution in the North China Plain

Simulating the production and dispersion of environmental pollutants in aerosol phase in an urban area of great historical and cultural value

Dust Heterogeneous Reactions during Long-Range Transport of a Severe Dust Storm in May 2017 over East Asia

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