Change in size distribution and chemical composition of kosa (Asian dust) aerosol during long-range transport

Mori, Ikue; Nishikawa, Masataka; Tanimura, Toshifumi; Hao, Qing

doi:10.1016/s1352-2310(03)00535-1

Cited by 311 publications

(236 citation statements)

References 12 publications

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“…When dust storms occur over northern China, N 1-10 can increase sharply. These results showed good agreement with those of previous studies (Mori et al, 2003;Marinoni et al, 2008). In Fig.…”

Section: Temporal Variability Of Aerosol Propertiessupporting

confidence: 93%

Size Distribution and Optical Properties of Particulate Matter (PM10) and Black Carbon (BC) during Dust Storms and Local Air Pollution Events across a Loess Plateau Site

Wang

Zhang

et al. 2015

Aerosol Air Qual. Res.

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We analyzed the suspended particle size distribution in the range of 0.5 to 10 µm and the optical properties of the particles from March 2007 to December 2010 at a site on the Loess Plateau (SACOL; 35.57°N, 104.08°E; 1965.8 m a.s.l.) about 48 km southeast of the center of Lanzhou. The results indicated that the variation in PM 10 was much larger in spring than in winter because of frequent dust events or local blowing soil dust during spring. The highest number concentrations of coarse-mode particles were likely attributable to dust events that transported mineral dust or soil dust in the spring season, caused by cold fronts or strong local winds. In contrast, the fine-mode particles that dominated in the cold season at SACOL were probably indicative of anthropogenic sources related to fossil-fuel combustion and biomass burning. The comparison of dust events and anthropogenic air pollution shows a clear distinction of lower PM 10 with higher B ap for pollution episodes and higher PM 10 with lower B ap for dust events. These findings suggest that the results in the cold season were likely attributable to light absorption of black carbon, and the coarse mode particles were dominant during dust events in spring.

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Section: Temporal Variability Of Aerosol Propertiessupporting

confidence: 93%

Size Distribution and Optical Properties of Particulate Matter (PM10) and Black Carbon (BC) during Dust Storms and Local Air Pollution Events across a Loess Plateau Site

Wang

Zhang

et al. 2015

Aerosol Air Qual. Res.

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“…Compared with the Asian dust, the powdery dust from the rainwater had a different characteristic, containing no Ca and other soil elements such as Fe and Al (Mori et al, 2002(Mori et al, , 2003. The estimated concentration of Al in Kosa source aerosol was 5.3 x 10 3 μg m -3 and the aerosol mass concentration was 9.0 x 10 4 μg m-3 .…”

Section: Analysis Of Du In Rainwatermentioning

confidence: 98%

Transport of carbon-bearing dusts from Iraq to Japan during Iraq's War

Tazaki

Wakimoto

Minami

et al. 2004

Atmospheric Environment

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Abstract-Rainwater collected during the period of February to April, 2003, at Kanazawa University, the Japan Sea Coast, was investigated by Ion chromatography for the dissolved ions. The filtered samples were evaluated by various kinds of 1 micro-techniques. The pH, Eh, electrical conductivity (EC), dissolved oxygen (DO), and depleted U (DU) of the rainwater were also measured. The results showed a rare case with low pH and high EC values of rainwater. The

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“…Because formic acid weakly correlated with Ca 2+ (r=0.43, n=10) and Mg + (r=0.37), this study suggests that gaseous formic acid may have reacted with these alkaline metals in aerosols. These metals are abundant in Asian dusts and are long-range transported in the atmosphere over Japanese Islands (Mori et al, 2003). The organic acid salts should have been scavenged by wet precipitation with snow.…”

Section: Correlations Among Organic and Inorganic Speciesmentioning

confidence: 99%

Low molecular weight (C1–C10) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan

Kawamura

Matsumoto

Tachibana

et al. 2012

Atmospheric Environment

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Low molecular weight (C 1 -C 10 ) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan AbstractSnowpack samples were collected from a snow pit sequence (6 m in depth) at the Murodo-Daira site near the summit of Mt. Tateyama, central Japan, an outflow region of Asian dusts. The snow samples were analyzed for a homologous series of low molecular weight normal (C 1 -C 10 ) and branched (iC 4 -iC 6 ) monocarboxylic acids as well as aromatic (benzoic) and hydroxy (glycolic and lactic) acids, together with major inorganic ions and dissolved organic carbon (DOC). The molecular distributions of organic acids were characterized by a predominance of acetic (range 7.8-76.4 ng/g-snow, av. 34.8 ng/g) or formic acid (2.6-48.1 ng/g, 27.7 ng/g), followed by propionic acid (0.6-5.2 ng/g, 2.8 ng/g). were found to account for 1-6% of DOC (270-1500 ng/g, 630 ng/g) in the snow samples.

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Change in size distribution and chemical composition of kosa (Asian dust) aerosol during long-range transport

Cited by 311 publications

References 12 publications

Size Distribution and Optical Properties of Particulate Matter (PM10) and Black Carbon (BC) during Dust Storms and Local Air Pollution Events across a Loess Plateau Site

Size Distribution and Optical Properties of Particulate Matter (PM10) and Black Carbon (BC) during Dust Storms and Local Air Pollution Events across a Loess Plateau Site

Transport of carbon-bearing dusts from Iraq to Japan during Iraq's War

Low molecular weight (C1–C10) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan

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