Optical Properties of Aerosols Related to Haze Events over Seoul Inferred from Skyradiometer and Satellite-Borne Measurements

Shi, Hoyeon; Lee, Sang-Sam; Chun, Hyuong-Wook; Song, Hwan‐Jin; Noh, Young-Chan; Sohn, Byung-Ju

doi:10.14191/atmos.2016.26.2.289

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Therefore, it is expected that Korea reveals the AOD east-west gradient if the prevailing winds are westerly and the airmass originates in or passes through the polluted area during the observation. As discussed earlier, [27] showed that the airmass that caused high aerosol concentrations in Korea originated from the northern and southern parts of China (Beijing and Shanghai). Here, Beijing and Shanghai are to the west or southwest of Korea, capable of efficiently transporting aerosols to the Korean Peninsula through the westerly winds.…”

Section: Discussionmentioning

confidence: 80%

“…The effect of aerosol origin and path on the PSD shape and the maximum size is discussed in Section 4. Previously, [27] analyzed the airmass origin associated with haze events in Seoul from 2009 to 2010. They showed that the high concentrations of aerosols observed over the Korean Peninsula were linked to the airmass originating from highly populated polluted areas (northern and southern China, such as Beijing and Shanghai) and transported to Korea through the westerly.…”

Section: Particle Size Distributionmentioning

confidence: 99%

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Aerosol Properties within and above the Planetary Boundary Layer across the Korean Peninsula during December 2016

Jung

Seo²,

Chang

et al. 2021

Atmosphere

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During December 2016, airborne aerosol measurements were taken at multiple heights across the Korean Peninsula to examine the vertical properties of aerosols. This study showed that aerosols above the planetary boundary layer (PBL) show similar concentrations and particle size distributions (PSDs), regardless of the relative locations in Korea. On the other hand, aerosols within the PBL differ depending on the geographical location, origin and path of the air mass. The concentrations are the highest in Seoul, followed by Gangneung, East Sea and the Yellow Sea. The known east–west aerosol gradient did not appear and the reasons are discussed in this paper. The study further shows that the aerosols of upwind regions affect the aerosols above the PBL, whereas aerosols in the PBL are affected by local sources and atmospheric conditions in addition to aerosols of upwind areas.

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Section: Discussionmentioning

confidence: 80%

Section: Particle Size Distributionmentioning

confidence: 99%

Aerosol Properties within and above the Planetary Boundary Layer across the Korean Peninsula during December 2016

Jung

Seo²,

Chang

et al. 2021

Atmosphere

View full text Add to dashboard Cite

show abstract

Classification of High-Concentration Aerosol Phenomena Using Their Physical Properties in Busan, South Korea

2022

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High concentrations of aerosols associated with various meteorological phenomena show different physical characteristics. Because these phenomena are differentiated based on the visibility observed with the eyes, the observation may be unreliable. To investigate aerosol physical properties across various meteorological phenomena and develop an algorithm to classify high-concentration aerosol events, each phenomenon was assessed by analyzing the aerosol number and mass concentrations according to particle size observed with an optical particle counter. Furthermore, the optimal probability density function for each phenomenon was derived using the mass concentration by diameter. In addition, total aerosol mass concentrations, geometric mean particle diameters, and geometric standard deviations were calculated. In the coarse mode, the total mass concentration of the Asian dust case was the highest (16.3 μg·cm−3), whereas in the accumulation mode, the haze value was greatest (22.86 μg·cm−3). Average diameters were 4.41 and 0.41 μm in the coarse and accumulation modes, respectively. A classification algorithm for high-concentration aerosol phenomena was proposed based on the determined physical properties, results of simulating long-distance transport using a backward trajectory model, and meteorological conditions. Among the nine verification cases, all the cases coincided with the observation results of the Korea Meteorological Administration.

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Characteristics of Concentrations of Aerosol Chemical Components and their Direct Radiative Forcing Estimates in the Haze Events during 2013〜2016

So¹,

Keen²,

Han³

2020

KOSAE

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Optical Properties of Aerosols Related to Haze Events over Seoul Inferred from Skyradiometer and Satellite-Borne Measurements

Cited by 3 publications

References 19 publications

Aerosol Properties within and above the Planetary Boundary Layer across the Korean Peninsula during December 2016

Aerosol Properties within and above the Planetary Boundary Layer across the Korean Peninsula during December 2016

Classification of High-Concentration Aerosol Phenomena Using Their Physical Properties in Busan, South Korea

Characteristics of Concentrations of Aerosol Chemical Components and their Direct Radiative Forcing Estimates in the Haze Events during 2013〜2016

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