Observation of the simultaneous transport of Asian mineral dust aerosols with anthropogenic pollutants using a POPC during a long-lasting dust event in late spring 2014

Xiaole Pan, Itsushi Uno, Yukari Hara, Masatoshi Kuribayashi, Hiroshi Kobayashi, Nobuo Sugimoto, Shigekazu Yamamoto, Takaaki Shimohara, Zifa Wang

Research output: Contribution to journalArticle

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Abstract

We observed a long-lasting dust event from 25 May to 2 June 2014, using a polarization optical particle counter (POPC). The transport of dust plumes over East Asia was verified on the basis of observations of Moderate Resolution Imaging Spectroradiometer, a lidar network, and surface synoptic observation stations. Mixing of dust and anthropogenic pollutants was investigated according to the variation in the depolarization ratio as a function of particle size. The nonsphericity of dust particles varied due to the impact of anthropogenic pollutants on their pathway. In the coarse mode, dust particles always had a clear nonspherical configuration, although large amounts of nitrate were also present. Supermicron particles are occasionally present in a spherical configuration, possibly due to the complex mixing of natural dust and anthropogenic particles. Statistically, ~64% of the total nitrate mass was deemed to be transported from outside of Japan due to a trapping effect in the dust plume.

Original languageEnglish
Pages (from-to)1593-1598
Number of pages6
JournalGeophysical Research Letters
Volume42
Issue number5
DOIs
Publication statusPublished - Mar 16 2015

Fingerprint

optical polarization
radiation counters
contaminants
aerosols
polarization
dust
minerals
aerosol
pollutant
mineral
plumes
nitrates
plume
nitrate
MODIS (radiometry)
configurations
particle
optical radar
lidar
depolarization

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Observation of the simultaneous transport of Asian mineral dust aerosols with anthropogenic pollutants using a POPC during a long-lasting dust event in late spring 2014. / Pan, Xiaole; Uno, Itsushi; Hara, Yukari; Kuribayashi, Masatoshi; Kobayashi, Hiroshi; Sugimoto, Nobuo; Yamamoto, Shigekazu; Shimohara, Takaaki; Wang, Zifa.

In: Geophysical Research Letters, Vol. 42, No. 5, 16.03.2015, p. 1593-1598.

Research output: Contribution to journalArticle

Pan, Xiaole ; Uno, Itsushi ; Hara, Yukari ; Kuribayashi, Masatoshi ; Kobayashi, Hiroshi ; Sugimoto, Nobuo ; Yamamoto, Shigekazu ; Shimohara, Takaaki ; Wang, Zifa. / Observation of the simultaneous transport of Asian mineral dust aerosols with anthropogenic pollutants using a POPC during a long-lasting dust event in late spring 2014. In: Geophysical Research Letters. 2015 ; Vol. 42, No. 5. pp. 1593-1598.
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