Sang Keen Song

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Albert Mills

Saint Mary's University (Canada)

Colin Williams

The University of Sheffield

Armando Marques-Guedes

UNL - New University of Lisbon

Bihter Erol

Istanbul Technical University

Saygin Abdikan

Hacettepe University

Mario diaz

Universidad del Valle - Colombia

Fusun Balik Sanli

Yildiz Technical University

Valdei Lopes de Araujo

Universidade Federal de Ouro Preto

kathia elizabeth dos reis

Anhanguera Educacional

Marcia Simão

Anhanguera Educacional

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Papers by Sang Keen Song

Long-range Transport Mechanisms of Asian Dust associated with the Synoptic Weather System

Environmental Sciences, 2001

Surface Ozone Episode Due to Stratosphere-Troposphere Exchange and Free Troposphere-Boundary Layer Exchange in Busan During Asian Dust Events

Journal of Environmental Science International, 2002

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2010년 3월 극심한 황사사례의 발생 및 수송과정에 관한 연구

Journal of Korean Society for Atmospheric Environment, 2016

The source and transport of the severe Asian dust event (ADE) recently observed in the Korean pen... more The source and transport of the severe Asian dust event (ADE) recently observed in the Korean peninsula were analyzed based on observations (surface weather charts and satellite data) and modeling study (WRF-CMAQ modeling systems). The ADE occurred on 20-21 March 2010 in South Korea with very high PM 10 concentrations (up to approximately 3,000 μg/m 3 in Daegu and Jeju). The dominant meteorological conditions affecting the dust outbreak and transport processes were found to be associated with the two synoptic features: (1) strong airflows (i.e., westerlies) induced by a strong pressure gradient resulting from a dense isobar pattern (west-high and east-low) between Tuva Republic and Mongolia and (2) a rapid movement of the strong westerlies merged with airflows generated near Gobi Desert and Inner Mongolia. The merged strong westerlies with a low pressure played a pivotal role in the huge amount of AD and its transport height of 5-8 km. The time and location of dust emissions calculated in the source regions were similar to those observed in the weather charts and satellite image. The ADE simulation mostly showed agreement in the patterns and the concentration levels of modeled dust (including PM 10) with those of the observations.

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Impact of oil spill from ship on air quality around coastal regions of Korea

Regional air quality around coastal regions, where regular maritime traffic emissions from cargo,... more Regional air quality around coastal regions, where regular maritime traffic emissions from cargo, other commercial, fishing and military vessels are significantly active, can be affected by their direct emission of primary air pollutants (NOx, SO2, particulate matter (PM), etc.). For instance, harbor traffic exerted an important impact on NO2, SO2, O3, and PM levels. In addition, regional air quality around coastal regions is also affected by oil spill caused by ship accident in the coast. On 7 Dec., 2007, a barge carrying a crane hit the oil tanker MT Hebei Sprit off the west coast of the Republic of Korea, Yellow Sea (approximately 10 km off the coast), at 0700 local time, causing the spill of total estimated 12,547 tons of Iranian heavy (IH) and Kuwait Export (KE) crude oils. Since then, oil began coming on shore late in the night on 7 Dec. More than 150 km of coastline had been identified as being impacted by 17 Dec. Much of the affected area is part of the Taean-gun National Pa...

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Photochemical Analysis of Ozone Levels in the Gulf of Gwangyang in the Spring and Summer of 2009

We examined high ozone episodes observed during the intensive measurement periods (11 May~21 June... more We examined high ozone episodes observed during the intensive measurement periods (11 May~21 June and 30 July~11 August 2009) in the Gulf of Gwangyang. During that period, there were a few events (or days) in which 1 hr averaged ozone concentrations were greater than 100 ppbv. The analysis of ozone budget and photochemical characteristics related to the ozone production was carried out using a photochemical box model. Ozone sensitivity to and VOCs was also examined in the study area during the measurement period. Diurnal variation of ozone during the episodes was similar to that of odd hydrogen radicals (, and ), suggesting significant correlation with photochemical production of ozone during the episodes. In general, ozone concentration in the study area during the measurement period was sensitive to VOCs, whereas ozone was sensitive to under certain conditions. Ozone sensitivity assessment using a radical budget analysis and /VOCs-control strategy was consistent with that using in...

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Characteristics of Asian Dust Transport Based on Synoptic Meteorological Analysis over Korea

by Sang Keen Song, Hwa Lee, and Cheol-ho Kim

Classification of synoptic patterns and their correlation with dust events over East Asia were pe... more Classification of synoptic patterns and their correlation with dust events over East Asia were performed by means of cluster analysis. The average linkage and K-means clustering techniques were used to identify two major weather types during Asian dust events (ADEs; total 26 ADEs with 47 dusty days) of six spring seasons from 1996 to 2001. The first weather type mainly

Reduced sulfur compounds in ambient air surrounding an industrial region in Korea

Environmental …, 2009

The atmospheric concentrations of several reduced sulfur compounds (RSCs) including H2S, CH3SH, D... more

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Dispersion and photochemical oxidation of reduced sulfur compounds in and around a large industrial complex in Korea

Atmospheric Environment, 2008

In this study, the environmental behavior of reduced sulfur compounds (RSCs: H 2 S, DMS, CS 2 , D... more

Photochemistry of reduced sulfur compounds in a landfill environment

Atmospheric …, 2005

This study examines the distribution characteristics of reduced sulfur compounds (RSCs such as DM... more This study examines the distribution characteristics of reduced sulfur compounds (RSCs such as DMS, CS 2 , H 2 S, DMDS, and CH 3 SH) and their photochemical reactions in landfill air. The photochemical conversions of RSCs to a further oxidized form, SO 2 were evaluated in the landfill site using a photochemical box model. Measurements of RSCs were carried out from landfill areas in Daegu, Korea, during a wintertime period (e.g., 13-16 Jan 2004). This study indicated that H 2 S was the most dominant RSC in the landfill, with the concentrations of 4.275.8 ppbv. The chemical species of RSCs, which may exert influences on the SO 2 production depending on sampling conditions, were found to include DMS, DMDS, and H 2 S. In general, the RSC contribution to the observed SO 2 levels was insignificant in the sampling sites investigated. Overall, the extent of the RSC oxidation to the observed SO 2 varied dramatically during the sampling period. The photochemical conversion of the RSCs in the landfill environment can account for about 15% of the observed SO 2 , on average. There was a strong correlation between DMS and SO 2 concentration levels during the study period.

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Long-range Transport Mechanisms of Asian Dust associated with the Synoptic Weather System

Environmental Sciences, 2001

Surface Ozone Episode Due to Stratosphere-Troposphere Exchange and Free Troposphere-Boundary Layer Exchange in Busan During Asian Dust Events

Journal of Environmental Science International, 2002

Download

2010년 3월 극심한 황사사례의 발생 및 수송과정에 관한 연구

Journal of Korean Society for Atmospheric Environment, 2016

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Impact of oil spill from ship on air quality around coastal regions of Korea

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Photochemical Analysis of Ozone Levels in the Gulf of Gwangyang in the Spring and Summer of 2009

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Characteristics of Asian Dust Transport Based on Synoptic Meteorological Analysis over Korea

by Sang Keen Song, Hwa Lee, and Cheol-ho Kim

Reduced sulfur compounds in ambient air surrounding an industrial region in Korea

Environmental …, 2009

The atmospheric concentrations of several reduced sulfur compounds (RSCs) including H2S, CH3SH, D... more

Download

Dispersion and photochemical oxidation of reduced sulfur compounds in and around a large industrial complex in Korea

Atmospheric Environment, 2008

In this study, the environmental behavior of reduced sulfur compounds (RSCs: H 2 S, DMS, CS 2 , D... more

Photochemistry of reduced sulfur compounds in a landfill environment

Atmospheric …, 2005

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