Transport of SO2 and aerosol over the Yellow sea

Kim, Byung-Gon; Han, Jin-Seok; Park, Soon-Ung

doi:10.1016/s1352-2310(00)00344-7

Cited by 68 publications

(29 citation statements)

References 21 publications

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“…Streets et al (2000) suggested that because sulfate aerosols play a vital role in cooling the atmosphere, a reduction in sulfur dioxide emissions in the future would result in increased global warming. Furthermore, aerosol sulfate has been identified as an important contributor to sunlight scattering (Lelieveld and Heintzenberg, 1992;Kim et al, 2001). At the top of the atmosphere above East Asia, SO 2− 4 radiative forcing is −2 to −10 W m −2 over land and −5 to −15 W m −2 over ocean (Gao et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Sulfur-containing particles emitted by concealed sulfide ore deposits: an unknown source of sulfur-containing particles in the atmosphere

Cao

Jiang

et al. 2015

Atmos. Chem. Phys.

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Abstract. Sources of sulfur dioxide, sulfates, and organic sulfur compounds, such as fossil fuels, volcanic eruptions, and animal feeding operations, have attracted considerable attention. In this study, we collected particles carried by geogas flows ascending through soil, geogas flows above the soil that had passed through the soil, and geogas flows ascending through deep faults of concealed sulfide ore deposits, and analysed them using transmission electron microscopy. Numerous crystalline and amorphous sulfurcontaining particles or particle aggregations were found in the ascending geogas flows. In addition to S, the particles contained O, Ca, K, Mg, Fe, Na, Pb, Hg, Cu, Zn, As, Ti, Sr, Ba, Si, etc. Such particles are usually a few to several hundred nanometres in diameter with either regular or irregular morphology. The sulfur-containing particles originated from deep-seated weathering or faulting products of concealed sulfide ore deposits. The particles suspended in the ascending geogas flow migrated through faults from deepseated sources to the atmosphere. This is a previously unknown source of the atmospheric particles. This paper reports, for the first time, the emission of sulfur-containing particles into the atmosphere from concealed sulfide ore deposits. The climatic and ecological influences of these sulfurcontaining particles and particle aggregations should be assessed.

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Section: Discussionmentioning

confidence: 99%

Sulfur-containing particles emitted by concealed sulfide ore deposits: an unknown source of sulfur-containing particles in the atmosphere

Cao

Jiang

et al. 2015

Atmos. Chem. Phys.

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“…The airborne air pollutant measurement data used in this study were provided from the National Institute of Environmental Research (National Institute of Environmental Research, 2000Research, -2010Kim et al, 2001;National Institute of Environmental Research, 2011 (Vardoulakis and Kassomenos, 2008). These gases have been measured over a long period and, in several instances, high concentrations in the FT have been detected.…”

Section: Methodsmentioning

confidence: 99%

“…The observation area is located over the eastern region of the Yellow Sea (32.64°N-37.67°N, 124.09°E-127.37°E) with the altitude range below the 5 km level. More details of the aircraft measurements can be found in Kim et al (2001).…”

Section: Methodsmentioning

confidence: 99%

Airborne Measurements of High Pollutant Concentration Events in the Free Troposphere over the West Coast of South Korea between 1997 and 2011

Lee

et al. 2016

Aerosol Air Qual. Res.

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Aircrafts enable the direct measurement of chemical components in the free troposphere (FT). This study employed airborne measurements to examine the occurrences of high concentrations of SO 2 and NO x in the FT over the coastal region west of the Seoul metropolitan area, South Korea. The data from a long-term (1997-2011) airborne measurement campaign were used to determine the meteorological conditions favorable for carrying these pollutants into the Seoul area. The back trajectory analyses of 21 instances of high FT pollutant concentration events showed ascending patterns from the major pollutant sources, mainly the industrial complexes in eastern China, in 9 instances and passing patterns in 12 instances. In the ascending instances, developing low-pressure systems over the source regions provide favorable conditions to uplift air pollutants from the surface into the FT. In the passing instances, an anomalous low-pressure system near the surface prevented airflows from descending into the boundary layer and upper-level anticyclonic systems helped to keep the ascending airflows in the FT. This study proposes the basic mechanisms for predicting air quality in the Seoul area, considering that air pollutants in the FT often entrain into the boundary layer to increase local concentrations.

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“…When the high-pressure system remains attached to the Siberian High, its long-range transport pattern is more southeastward to eastward, passing through Mongolia as a possible pathway of wintertime Asian Dust transport to Korea Kim et al, 2001). Note that Type 1 is compatible with Cluster 2 in Kim et al (2005) and the long-range transport type in Lee et al (2011).…”

Section: Type 1: Expansion Of the Siberian High 10mentioning

confidence: 94%

Synoptic perspectives on pollutant transport patterns observed by satellites over East Asia: Case studies with a conceptual model

Kim

Son

et al. 2016

Preprint

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Abstract. We demonstrate that daily pollutant transport patterns in East Asia are visible from satellite images when 15 inspected with corresponding synoptic weather analyses. Transport pathways of air pollutants in East Asia are investigated using satellite observations, surface weather charts, and chemical-transport model simulations. It is found that during cool season (fall to spring), pollutant transports in East Asia are largely determined by synoptic weather patterns associated with high pressure system over southern China, which is extended from the Siberia High, and low pressure system over Manchuria, which is initiated by Altai-Sayan cyclogenesis. Based on the relative location and strength of these weather 20 systems, three types of synoptic weather patterns that may contribute to pollutants transport in East Asia, especially in China and Korea, are identified: i.e., (1) a strengthening of the Siberian High and its southeastward propagation; (2) a high-pressure system over southern China followed by a frontal passage associated with a northern low-pressure system; and (3) a stagnant high-pressure system over southern China. For all three patterns, the high-pressure system in southern China is essential for the development of regional air pollution, while frontal activities associated with low-pressure system provide a forcing 25 mechanism to transport those pollutants eastward or southeastward. Observed and simulated surface PM distributions show good agreement in both aerosol optical depth and NO2 column density further implying that anthropogenic emissions also contribute to regional events of high surface PM concentrations. It is argued that the quasi-periodic migration of synoptic weather systems in East Asia works as an efficient pump of pollutants; i.e., regional air pollutions developed under highpressure systems are transported downstream by low-pressure systems. 30

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Transport of SO2 and aerosol over the Yellow sea

Cited by 68 publications

References 21 publications

Sulfur-containing particles emitted by concealed sulfide ore deposits: an unknown source of sulfur-containing particles in the atmosphere

Sulfur-containing particles emitted by concealed sulfide ore deposits: an unknown source of sulfur-containing particles in the atmosphere

Airborne Measurements of High Pollutant Concentration Events in the Free Troposphere over the West Coast of South Korea between 1997 and 2011

Synoptic perspectives on pollutant transport patterns observed by satellites over East Asia: Case studies with a conceptual model

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