Impact of Siberian forest fires on the atmosphere over the Korean Peninsula  during summer 2014

Jung, Jinsang; Lyu, Young-Sook; Lee, Minhee; Hwang, Tae-Yeon; S, Lee; Oh, Sangyoon

doi:10.5194/acp-16-6757-2016

Cited by 43 publications

(41 citation statements)

References 53 publications

(74 reference statements)

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“…This episode contrasted with Park et al (2013a), in which the episodes caused by emissions from wildfires in China and local emissions consecutively occurred in February-April 2011, and with Jung et al (2016), in which the episodes caused by emissions from China and Siberian forest fire consecutively occurred in July 2014. Du et al (2011) identified three types of episodes for Shanghai in the summer of 2009: (1) secondary pollution with elevated secondary ions; (2) biomass burning-induced pollution with high K + ; and (3) complicated pollution that combined the previous two pollution types.…”

Section: Analysis Of Concentration Variations At Seoul In May 2003mentioning

confidence: 81%

“…In and Kim (2010) considered biomass burning and fugitive dust emissions from other areas such as China and Korea as well, to explain the variations of concentrations in May 2003. Recently, Jung et al (2016) demonstrated that the haze episode in late July 2014 was consecutively impacted by anthropogenic emissions from China and smoke plumes from Siberian forest fires using remote sensing data and chemical analyses.…”

Section: Introductionmentioning

confidence: 99%

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Concentration Variations in Particulate Matter in Seoul Associated with Asian Dust and Smog Episodes

Ghim

Kim

Chang

2017

Aerosol Air Qual. Res.

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Particulate species were measured in April-May 2003 at two sites, one in the megacity of Seoul and the other in the Deokjeok Island to the west of Seoul, to examine the effects of long-range transport under the influence of prevailing westerlies. The effects of Asian dust were observed in April, and a severe smog episode occurred in late May. During May, all air pollutants showed negative correlations with wind speed at Seoul, particularly for NO 2 and CO, a large proportion of which result from vehicle emissions. SO 4 2-continued to increase in association with an inflow of air pollutants from China with heavy use of coal, with fluctuations depending on wind speed. The smog episode in late May occurred as emissions from Siberian forest fires were superimposed on pollutant inflows from China that had persisted since early May and local emissions accumulated under stagnant conditions. During the episode, Siberian forest fires increased K + while local emissions primarily from vehicles increased NO 3 -, OC, and EC. The effects of an inflow of air pollutants from the outside were significant at Deokjeok, with small local emissions, resulting in substantial increases in Ca 2+ during the Asian dust event and SO 4 2-during the smog episode, compared to those at Seoul. Because both sites were strongly influenced by the effects of long-range transport in May, PM 2.5 along with SO 4 2-and K + exhibited a strong correlation between Seoul and Deokjeok.

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Section: Analysis Of Concentration Variations At Seoul In May 2003mentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Concentration Variations in Particulate Matter in Seoul Associated with Asian Dust and Smog Episodes

Ghim

Kim

Chang

2017

Aerosol Air Qual. Res.

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“…1). Because Daejeon is located downwind of Asian continental outflows, it is frequently affected by long-range transported pollutants and Asian dust (Jung et al, 2016). Light scattering and absorption coefficients were continuously measured inside a monitoring building (∼ 15 m above the ground) of the National Institute of Environmental Research in South Korea.…”

Section: General Description Of Measurementmentioning

confidence: 99%

“…Online measurements of PM 2.5 organic carbon (OC) and elemental carbon (EC) were conducted using a semicontinuous carbon analyzer (Sunset Laboratory Inc., model RT3140) based on the thermal-optical transmittance (TOT) protocol for pyrolysis correction and the NIOSH (National Institute for Occupational Safety and Health) 5040 method temperature profile (Birch and Cary, 1996;Jung et al, 2010). Measurement condition of the carbon analyzer was described in detail by Jung et al (2016). The detection limit of both OC and EC was 0.5 µg C m −3 for 1 h time resolution, as reported by the manufacturer.…”

Section: General Description Of Measurementmentioning

confidence: 99%

“…Analytical conditions of anions (Cl − , NO − 3 , SO 2− 4 ) and cations (Na + , NH + 4 , K + , Ca 2+ , Mg 2+ ) were described in detail by Jung et al (2016). The detection limits of Cl − , NO − 3 , and SO 2− 4 , which are defined as 3 times the standard deviation of field blanks, were determined to be 0.02, 0.01, and 0.11 µg m −3 , respectively.…”

Section: Water-soluble Ions Analysis Of Pm 25 Filter Samplesmentioning

confidence: 99%

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Ground-based characterization of aerosol spectral optical properties of haze and Asian dust episodes under Asian continental outflow during winter 2014

Jung

Yu²,

Lyu³

et al. 2017

Atmos. Chem. Phys.

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Abstract. Long-range transported (LRT) haze can affect the regional radiation budget and the air quality in areas downwind of the Asian continental outflow. Because in situ observations of spectral aerosol optical properties of the LRT haze are rare, an intensive characterization of aerosol optical properties is needed. This study characterized the spectral optical properties of the LRT haze and Asian dust originating from the Asian continent. Integrated chemical and optical measurements of aerosol particles were carried out in a downwind area of the Asian continental outflow (Daejeon, South Korea) during winter 2014. High concentrations of PM 10 (particulate matter with a diameter ≤ 10 µm) and light scattering coefficients at 550 nm, σ s,550 , were observed during a long-range transport (LRT) haze episode (PM 10 = 163.9 ± 25.0 µg m −3 ; σ s,550 = 503.4 ± 60.5 Mm −1 ) and Asian dust episode (PM 10 = 211.3 ± 57.5 µg m −3 ; σ s,550 = 560.9 ± 151 Mm −1 ). During the LRT haze episode, no significant change in the relative contribution of PM 2.5 (particulate matter with a diameter ≤ 2.5 µm) chemical components was observed as particles accumulated under stagnant atmospheric conditions (13-17 January 2014), suggesting that the increase in PM 2.5 mass concentration was caused mainly by the accumulation of LRT pollutants. On the other hand, a gradual decrease in Ångström exponent (Å) and a gradual increase in single scattering albedo (ω) and mass scattering efficiency (MSE) were observed during the stagnant period, possibly due to an increase in particle size. These results imply that a change in particle size rather than chemical composition during the stagnant period is the dominant factor affecting the aerosol optical properties. During the Asian dust episode, a low PM 2.5 / PM 10 ratio and Å(450/700) were observed with average values of 0.59 ± 0.06 and 1.08 ± 0.14, respectively, which were higher than those during the LRT haze episode (0.75 ± 0.06 and 1.39 ± 0.05, respectively), indicating that PM 2.5 / PM 10 mass ratios and Å(450/700) can be used as tracers to distinguish aged LRT haze and Asian dust under the Asian continental outflow.

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Distribution of Trace Gases and Aerosols in the Troposphere Over Siberia During Wildfires of Summer 2012

et al. 2018

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The results of sensing of the gas and aerosol composition of the atmosphere with the Optik Tu‐134 aircraft laboratory in the period from 31 July to 1 August 2012 are presented. The measurements were conducted along the flight route Novosibirsk‐Tomsk‐Mirny‐Yakutsk‐Bratsk‐Novosibirsk. A significant part of the Siberian territory during this period was covered by numerous forest fires. The synoptic situation during the measurements was characterized by the presence of low‐gradient field. This fact determined the low rate of transport and diffusion of pollutants and their accumulation in the region under study. The maximal concentrations of CO2, CH4, and CO over fire zones achieved 432 ppm, 2367 ppb, and 4036 ppb, respectively. The aerosol particle number density in emission plumes achieved 4400 cm−3. Outside emission plumes, the concentration ranged within 400–1000 cm−3 depending on the region. The mass concentration of aerosol in plumes increased approximately 7 times (6.9). The enrichment of the concentration of some elements and ions in the plume with respect to the background varied from 1.3 to 9.1 times. The generation of ozone from biomass burning products was observed at plume boundaries. Two versions of this process are possible: ozone generation under and above the plume.

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Impact of Siberian forest fires on the atmosphere over the Korean Peninsula during summer 2014

Cited by 43 publications

References 53 publications

Concentration Variations in Particulate Matter in Seoul Associated with Asian Dust and Smog Episodes

Concentration Variations in Particulate Matter in Seoul Associated with Asian Dust and Smog Episodes

Ground-based characterization of aerosol spectral optical properties of haze and Asian dust episodes under Asian continental outflow during winter 2014

Distribution of Trace Gases and Aerosols in the Troposphere Over Siberia During Wildfires of Summer 2012

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