Characteristic number size distribution of aerosol during Asian dust period in Korea

Youngsin Chun, Jiyoung Kim, Jae Cheon Choi, Kyung On Boo, Sung Nam Oh, Meehye Lee

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

The size-separated number concentrations of aerosols ranging from 0.3 to 25μm were observed in Seoul and Anmyon Island in the west coast of Korea during Asian dust period in Spring 1998. During the heavy dust period, the number size distributions of aerosols observed in both places were characterized by decreases in small size<0.5μm and increase in large size between 1.35 and 10μm. For particles in this range, there was a good correlation between number concentrations observed in both two places. The number of coarse particles >10μm showed a distinct diurnal variation without a significant change in amplitude, which was more pronounced in Seoul. It suggests that coarse particles were more affected by local sources. Trajectories back in time showed that the air collected in Korea during dust period originated from desert regions in the central part of China. From these results, it was evident that increased particles in the range of 1.35-10μm during dust source period represented mineral components, which originated possibly from the dust source regions.

Original languageEnglish
Pages (from-to)2715-2721
Number of pages7
JournalAtmospheric Environment
Volume35
Issue number15
DOIs
Publication statusPublished - 2001 May 7

Keywords

  • Aerosol
  • Long-range transport
  • Mineral dust
  • Number concentration
  • Yellow sand

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

Fingerprint Dive into the research topics of 'Characteristic number size distribution of aerosol during Asian dust period in Korea'. Together they form a unique fingerprint.

  • Cite this