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- Title
Chemical properties of significant Asian Dust particles observed at Himeji City from November 2009 to May 2012.
- Authors
Saitoh, Katsumi; Nakatsubo, Ryouhei; Hiraki, Takatoshi; Shima, Masayuki; Yoda, Yoshiko; Sera, Koichiro
- Abstract
In order to shed light on Asian Dust (AD) particles reaching the Japanese archipelago, we measured hourly PM 2. 5 and PM 1 0 values by consecutive automatic monitoring during particulate matter (PM) surveillance conducted from 16 November 2009 to 14 May 2012 in Himeji City, Hyogo Prefecture, Japan, and investigated the characteristics of AD based on elemental and ionic analytical data from size-resolved PM with a one-week base sampling interval. We were able to detect three types of AD event based on the PM 2. 5 and PM 1 0 values and the results of three-day backward trajectory analysis. The origin point of the AD events was the Gobi Desert for Event 1 and the Loess Plateau for Event 3. In the case of Event 2, AD originated in the northern Urals in Russia and reached the Japanese archipelago via the side of the Taklamakan and Gobi Deserts and through the Loess Plateau. As results of the research, it suggest that the chemical composition of AD event particles differs depending on the origin point and the course taken before reaching the Japanese archipelago.
- Subjects
LOESS Plateau (China); DUST; PARTICULATE matter; ARCHIPELAGOES; DATA analysis
- Publication
International Journal of PIXE, 2017, Vol 27, Issue 1/2, p71
- ISSN
0129-0835
- Publication type
Article
- DOI
10.1142/S0129083518500079