The soil particle size dependent emission parameterization for an Asian dust (Yellow Sand) observed in Korea in April 2002

In, Hee-Jin; Park, Soon-Ung

doi:10.1016/j.atmosenv.2003.07.009

Cited by 66 publications

(22 citation statements)

References 16 publications

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“…When haze occurred, the TSP concentration increased by two times, while the concentration of PBDD/Fs increased by five times. Other studies reported that fine particles increase in haze, and fine particles have larger specific surface area and therefore absorbed more PCDD/Fs, so the concentration of PCDD/Fs increased more than TSP (In and Park, 2003;Ohta et al, 2002).…”

Section: Concentrations and Profiles Of Pbdd/fsmentioning

confidence: 96%

Level and congener profiles of polybrominated dibenzo-p-dioxins and dibenzofurans in the atmosphere of Beijing, China

Zhou

Zhao

et al. 2014

Atmospheric Environment

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Section: Concentrations and Profiles Of Pbdd/fsmentioning

confidence: 96%

Level and congener profiles of polybrominated dibenzo-p-dioxins and dibenzofurans in the atmosphere of Beijing, China

Zhou

Zhao

et al. 2014

Atmospheric Environment

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“…It is the transnational materials transfer. The composition of the material particle from the long-term transport sand storm was mostly finer than 10 µm (In and Park, 2003;Pye and Tsoar, 2009). Furthermore, some local places were affected by the river dust that comes from the arid riverbed, which affect the nearby towns (Lin and Yeh, 2007;Vickery and Eckardt, 2013).…”

Section: Introductionmentioning

confidence: 90%

The Horizontal and Vertical Characteristics of Aeolian Dust from Riverbed

Syu

Cheng

Kao

et al. 2016

Aerosol Air Qual. Res.

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Arid riverbed is an important source of Aeolian dust to influence the atmosphere of nearby village or downtown. In general, Aeolian dust pertains to wind activity in the study of geology, environment and meteorology on particle suspension. This field study set the horizontal/vertical sampling system up in order to investigate the Aeolian dust dimensional distribution properties from the riverbed of the Jhuoshuei River. In addition, the study utilized the unmanned aerial vehicle (UAV) imagery to discriminate the covering condition of riverbed. The results revealed that the percentage of riverbed covering conditions, including bare zone, wetlands, green covering and water covering was about 50.1, 15.7, 16.8 and 17.4%, respectively, on January 5 th , 2011. Two Aeolian dust cases from riverbed were measured on November 26 th , 2010 and January 15 th , 2011. First sampling case was under slower wind speed, and the total particulate matter (PM) concentration in vertical sampling was almost decreased with increasing sampling height, however, the phenomena of second case (faster wind speed) was just on the contrary. Besides, Aeolian dust was distributed in a bimodal or a multimodal curve, and the main peak size was above 10 µm. Mode size of suspension particle diameter was increased as the wind speed increased (14.8 µm/ first case; 21.3 µm/ second case). The total mass concentration ratio of south site to source site (one meter height) was about 1:9 in first case and about 1:3 in second case. Comparing with those two cases, the faster the wind is, the shorter the surface roughness height is (3.08 mm/ first case; 1.07 mm/ second case). Besides, as the wind speed increasing, the friction velocity was also increased (0.33 m s -1 / first case; 0.68 m s -1 / second case). Consequently, this study clued the spatial variability of river dust events, which can further aid the site investigating, forecasting and preventing of dust influences.

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“…Daily mean surface temperature abruptly decreased from 5 April (284.1 K) to 6 April (268.1 K). During the cooling period, intensive dust storms were extensively observed over arid, and semi-arid areas in Mongolia and China (In and Park 2003;Chung et al 2003). Figure 2 shows the daily mean surface temperatures (contour) and daily temperature changes in a day (shade) during 4-8 April 2002.…”

Section: Methodsmentioning

confidence: 99%

Interannual Variation of Cold Frontal Activity in Spring in Mongolia

Hayasaki

Sugata

Tanaka

2006

Journal of the Meteorological Society of Japan

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In Mongolia and northern China, most of the dust storms in spring occur in association with a passage of cold front formed at the leading edge of cold air outbreak. In this study, we propose an index to evaluate a cold frontal activity by identifying ''cooling days''. These are days when there is a strong decrease in daily mean surface air temperature of greater than 5 K, using the European Centre for Medium-Range Weather Forecasts 45-year reanalysis data for 1967 through 2002.The geographical distribution of seasonal mean cooling day frequencies showed that Mongolia is the most frequent area over Eurasia with the highest frequency of cooling days in spring.Interannual variations in the area-averaged frequency of cooling days in Mongolia showed that most of the years with less-than-average frequencies in spring occurred in the last 20 years. To determine the main cause(s) for the differences in cooling day frequencies, we conducted a composite study for the 8 years with the highest area-averaged spring cooling day frequencies (active years), and the 8 years with the lowest (inactive years). This study revealed that there were no apparent differences between the active and inactive years with regard to geographical route of cold air, or total number of cooling events. In contrast, the cooling intensity in the inactive years was approximately 20% below that in the active years. These results suggest that recent weakening of cooling intensity over eastern Mongolia has resulted from warming over Siberia.

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The soil particle size dependent emission parameterization for an Asian dust (Yellow Sand) observed in Korea in April 2002

Cited by 66 publications

References 16 publications

Level and congener profiles of polybrominated dibenzo-p-dioxins and dibenzofurans in the atmosphere of Beijing, China

Level and congener profiles of polybrominated dibenzo-p-dioxins and dibenzofurans in the atmosphere of Beijing, China

The Horizontal and Vertical Characteristics of Aeolian Dust from Riverbed

Interannual Variation of Cold Frontal Activity in Spring in Mongolia

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