The impact of topography and urban building parameterization on the photochemical ozone concentration of Seoul, Korea

Lee, Hwa Woon; Choi, Hyun‐Jung; Lee, Soon-Hwan; Kim, Yoo-Keun; Jung, Woo‐Sik

doi:10.1016/j.atmosenv.2008.01.021

Cited by 24 publications

(7 citation statements)

References 13 publications

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“…They reported that the lower mixing height could cause enrichment in the temperature and weaker winds over coastal areas as to promote the ozone accumulation. Lee et al (2008) has also directly applied the MM5-CMAQ model to reveal the differences in ozone concentration in different practical urban ground conditions and correlate urban buildings with meteorological and photochemical fields. The above-reviewed context, thus, led to a rigid belief that the ozone distribution could be affected by urbanization.…”

Section: Evolution Of Ozone Under Different Urbanized Levelsmentioning

confidence: 99%

A Review on Ozone Evolution and Its Relationship with Boundary Layer Characteristics in Urban Environments

Tong

Leung

Liu

2010

Water Air Soil Pollut

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This paper reviews the interrelationship among boundary layer, urbanization, and evolution of ozone, with particular emphasis on how boundary layer dynamics and urbanization affects the evolution of ozone under different meteorological and climatological conditions. The aim of this work is not only to provide an exhaustive investigation of individual ozone episodes but to look at the underlying issues and hypotheses that are available for understanding the evolution of ozone. The review concludes with a summary of the current state of knowledge and outlines some of the remaining questions. It is the intention of this paper to serve as an ecumenical reference to the community for reappraising the relation of boundary layer climate to the evolution of ozone in an urban setting, especially on a peculiar feature of ozone dynamic, nocturnal ozone maxima. To date, there is still no overarching consensus on the mechanisms that lead to its formation. The importance of levels of urbanization and advantage of ascertaining the substantial weights of the respective mixing height and emission structure in exploring the relationship between ozone evolutions should not be overlooked.

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Section: Evolution Of Ozone Under Different Urbanized Levelsmentioning

confidence: 99%

A Review on Ozone Evolution and Its Relationship with Boundary Layer Characteristics in Urban Environments

Tong

Leung

Liu

2010

Water Air Soil Pollut

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“…Passing the meteorological conditions into an air-quality model at a higher temporal resolution or running the chemistry online within a meteorological model is preferable but requires significantly more computational resources (Grell et al 2004). Even though performing offline high-spatial-resolution air-quality model simulations with coarse temporal meteorological inputs adds some uncertainty to the results by underestimating the variability of vertical transport (Grell et al 2004), this approach has been used in a number of previous studies to allow for key insights to be gained on how complex environments (i.e., topography, coastlines, urban centers, and industrial complexes) and/or small-scale processes (i.e., sulfate formation and boundary layer venting through fair-weather cumulus clouds and localscale circulations, such as sea breezes) affect air quality (Gonçalves et al 2009;Im et al 2010;Jimenez et al 2005Jimenez et al , 2006Jimenez et al , 2007Lee et al 2008;Loughner et al 2011;Ortega et al 2009;Parra et al 2006;Perez et al 2006;San Jose et al 2007;Stein et al 2007;Yu et al 2008). Even though performing offline high-spatial-resolution air-quality model simulations with coarse temporal meteorological inputs adds some uncertainty to the results by underestimating the variability of vertical transport (Grell et al 2004), this approach has been used in a number of previous studies to allow for key insights to be gained on how complex environments (i.e., topography, coastlines, urban centers, and industrial complexes) and/or small-scale processes (i.e., sulfate formation and boundary layer venting through fair-weather cumulus clouds and localscale circulations, such as sea breezes) affect air quality (Gonçalves et al 2009;Im et al 2010;Jimenez et al 2005Jimenez et al , 2006Jimenez et al , 2007Lee et al 2008;Loughner et al 2011;Ortega et al 2009;Parra et al 2006;Perez et al 2006;San Jose et al 2007;Stein et al 2007;Yu et al 2008).…”

Section: Model Descriptionmentioning

confidence: 99%

Impact of Bay-Breeze Circulations on Surface Air Quality and Boundary Layer Export

Loughner

Tzortziou

Follette-Cook

et al. 2014

Journal of Applied Meteorology and Climatology

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Meteorological and air-quality model simulations are analyzed alongside observations to investigate the role of the Chesapeake Bay breeze on surface air quality, pollutant transport, and boundary layer venting. A case study was conducted to understand why a particular day was the only one during an 11-day ship-based field campaign on which surface ozone was not elevated in concentration over the Chesapeake Bay relative to the closest upwind site and why high ozone concentrations were observed aloft by in situ aircraft observations. Results show that southerly winds during the overnight and early-morning hours prevented the advection of air pollutants from the Washington, D.C., and Baltimore, Maryland, metropolitan areas over the surface waters of the bay. A strong and prolonged bay breeze developed during the late morning and early afternoon along the western coastline of the bay. The strength and duration of the bay breeze allowed pollutants to converge, resulting in high concentrations locally near the bay-breeze front within the Baltimore metropolitan area, where they were then lofted to the top of the planetary boundary layer (PBL). Near the top of the PBL, these pollutants were horizontally advected to a region with lower PBL heights, resulting in pollution transport out of the boundary layer and into the free troposphere. This elevated layer of air pollution aloft was transported downwind into New England by early the following morning where it likely mixed down to the surface, affecting air quality as the boundary layer grew.

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“…Many preceding researches demonstrate that detailed data of surface characteristics and topography using a mesoscale metrological model have contributed much to the improvement of a local circulation field. [6][7][8] In other words, a diagnostic model to produce high resolution (no more than 1 km) winds has been dependent upon horizontal and vertical observations which are not homogeneously distributed when an initial field is generated. What is important is to change dynamic flow through inputting detailed surface boundary conditions based on topographical features and to simulate the characteristics of a micro-scale flow against surface characteristics.…”

Section: Introductionmentioning

confidence: 99%

Correction of surface characteristics to diagnostic wind modeling and its impact on potentials of wind power density

Kim¹,

Lee²,

Park³

et al. 2014

Journal of Renewable and Sustainable Energy

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This research aimed to correct recently changed surface characteristics into a diagnostic wind field model with the purposes of investigating the changed mixing depth and wind profile, as well as its impact on wind resource potentials. In order to reflect the latest surface characteristics, the Environmental Geographic Information System (EGIS) 3-s land-use data produced by the Ministry of Environment was inputted. A change in the conditions of the surface affects the local wind circulation and the feature of Planetary Boundary Layer (PBL), such as mixing heights and the wind speed profile. As a result, a difference of wind speed at a hub height leads to a change in the wind energy potential. Compared to Low Resolution experiment (LRexp), High Resolution experiment (HRexp) suffers Root Mean Square Error (RMSE) decreased by 26.3% and Index Of Agreement (IOA) is increased by 7.8% at maximum, so that it contributes to the improved prediction accuracy of wind field. V C 2014 AIP Publishing LLC. [http://dx.

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The impact of topography and urban building parameterization on the photochemical ozone concentration of Seoul, Korea

Cited by 24 publications

References 13 publications

A Review on Ozone Evolution and Its Relationship with Boundary Layer Characteristics in Urban Environments

A Review on Ozone Evolution and Its Relationship with Boundary Layer Characteristics in Urban Environments

Impact of Bay-Breeze Circulations on Surface Air Quality and Boundary Layer Export

Correction of surface characteristics to diagnostic wind modeling and its impact on potentials of wind power density

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