Spatial and Temporal Variation in PBL Height over the Korean Peninsula in the KMA Operational Regional Model

Lee, Seung-Jae; Lee, Juwon; Greybush, Steven J.; Kang, Minseok; Kim, Joon

doi:10.1155/2013/381630

Cited by 39 publications

(7 citation statements)

References 30 publications

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“…The previous study shows that the thickness of CBL ranges from 1 km to 2 km in humid area through certain point observation or boundary layer statistics [9][10][11], while in the dry areas with severe surface thermal activity, such as western Sahara, the Arabian Peninsula Desert, the Taklimakan Desert, and the Gobi Desert (in Mongolia and Northwest China), the CBL thickness can stretch over 4 km in daytime [12][13][14]. Over recent years, the study on ABL characteristics under special geographical conditions and extreme climates exceeded people's expectation [15].…”

Section: Introductionmentioning

confidence: 99%

Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions

et al. 2017

Advances in Meteorology

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This paper reported a comprehensive analysis on the diurnal variation of the Atmospheric Boundary Layer (ABL) in summer of Badain Jaran Desert and discussed deeply the effect of surface thermal to ABL, including the Difference in Surface-Air Temperature (DSAT), net radiation, and sensible heat, based on limited GPS radiosonde and surface observation data during two intense observation periods of experiments. The results showed that (1) affected by topography of the Tibetan Plateau, the climate provided favorable external conditions for the development of Convective Boundary Layer (CBL), (2) deep CBL showed a diurnal variation of three- to five-layer structure in clear days and five-layer ABL structure often occurred about sunset or sunrise, (3) the diurnal variation of DSAT influenced thickness of ABL through changes of turbulent heat flux, (4) integral value of sensible heat which rapidly converted by surface net radiation had a significant influence on the growth of CBL throughout daytime. The cumulative effect of thick RML dominated the role after CBL got through SBL in the development stage, especially in late summer, and (5) the development of CBL was promoted and accelerated by the variation of wind field and distribution of warm advection in high and low altitude.

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Section: Introductionmentioning

confidence: 99%

Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions

et al. 2017

Advances in Meteorology

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“…Note that OA concentrations are lower than sulfate concentrations above 1000 m, but higher below 1000 m (and that the relative concentrations of nitrate and ammonium also transition at 1000 m). It suggests that the sources and/or processing of the particle populations differ above and below 1000 m, which may approximate the planetary boundary layer height (PBLH), while the PBLH can vary widely (previous research has shown average summer values of ~1000-1400 m over Seoul (Lee et al, 2013). It is likely that the particles above 1000 m altitude were derived from transport, which is generally associated with enhanced sulfate formation (see Fig.…”

Section: Flight Type 2: Vertical Profiles Of Aerosol Chemical Composition and Physical Propertiesmentioning

confidence: 98%

Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas

Tae-hyun

Choi

et al. 2020

Aerosol Air Qual. Res.

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As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types of research flights were conducted over the Seoul Metropolitan Area (SMA) from May till June 2015 to measure the spatial distribution of a pollution plume near a power plant and petrochemical complex, the vertical profiles of pollutants on the western coast of Korea, and the pollutant distribution in the SMA. The pollution plume (~0-700 m) was highly concentrated and dominated by organic aerosol (OA), which very likely oxidized in the plume, as it showed slightly less oxidation near the source and significantly less oxidation at altitudes above the plume. One vertical profile displayed transitions in concentration and changes in the dominant components, suggesting that the particle sources and/or processing differed above ~1000 m; below 1000 m, where the total mass and OA concentrations were high, sulfate and likely transport sources predominated. The other profile, which was assessed during a separate flight, exhibited sharp increases in the OA number concentration and mean diameter, less oxidized organic content, and higher organic and nitrate concentrations above 1400 m, indicating high-altitude transport and a cleaner boundary layer. Finally, flights investigating the distributions of pollutants in the central, upwind, and downwind SMA regions generally detected high levels of oxidation downwind as well as different aerosol masses between the low and high altitudes. This study highlights the necessity of understanding the complex vertical structures of particle layers, such as those identified in and around the SMA, in order to facilitate the adoption of efficient air quality control strategies and enhance air quality forecasting.

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“…Various observations and numerical models are used to monitor air quality and meteorological factors that significantly affect human lives [4][5][6][7][8][9]. Among them, the PBL height (PBLH) plays a key role in ground air pollution because of the inversion layer directly above the PBL [6].…”

Section: Introductionmentioning

confidence: 99%

“…If vigorous convection occurs, the PBLH increases, whereas if there is little convection and the atmosphere is stable, the PBLH decreases. Lee et al [7] examined the horizontal distribution of the PBLH and the related spatiotemporal structures in the Korean Peninsula and surrounding seas in order to evaluate. The CO 2 dynamics Sustainability 2021, 13, 8954 2 of 13 and the dispersion of air pollutant for developing a model boundary layer scheme.…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Variations in Atmospheric Ventilation Index Coupled with Particulate Matter Concentration in South Korea

Lee¹,

Lee²,

Kang³

et al. 2021

Sustainability

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The spatiotemporal variations in the atmospheric ventilation index (AVI) with the particulate matter (PM) concentrations in South Korea were investigated using a regional grid model derived from the National Center for AgroMeteorology and PM10 concentration data obtained from AirKorea and the Korea Meteorological Administration. To construct a high-resolution AVI database with 1 h time intervals and a spatial resolution of approximately 2.4 km, a medium-range prediction was performed using a regional model twice a week from December 2018 to November 2019. The resultant dataset was used to explore the seasonal patterns of the areal distribution of a novel index: Ventilation Index coupled with PM (VIP), defined by the ratio of the AVI to PM. To determine the effects of geography on the VIP, diurnal variations of the VIP were examined at three major cities in South Korea. The emphasis of the investigation was on major cities that are planned to be developed into smart cities. This study reveals the specific spatiotemporal structure of the AVI in South Korea for the first time at a high resolution and introduced the potential usefulness of the VIP. The results provide insights that could aid decision making for determining favorable locations for clean or polluted cities on an annual basis and can enable the sustainable management of fine PM in and around the areas of interest.

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Spatial and Temporal Variation in PBL Height over the Korean Peninsula in the KMA Operational Regional Model

Cited by 39 publications

References 30 publications

Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions

Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions

Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas

Spatial and Temporal Variations in Atmospheric Ventilation Index Coupled with Particulate Matter Concentration in South Korea

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