Real-time observational evidence of changing Asian dust morphology with the mixing of heavy anthropogenic pollution

Xiaole Pan, Itsushi Uno, Zhe Wang, Tomoaki Nishizawa, Nobuo Sugimoto, Shigekazu Yamamoto, Hiroshi Kobayashi, Yele Sun, Pingqing Fu, Xiao Tang, Zifa Wang

研究成果: ジャーナルへの寄稿記事

21 引用 (Scopus)

抄録

Natural mineral dust and heavy anthropogenic pollution and its complex interactions cause significant environmental problems in East Asia. Due to restrictions of observing technique, real-time morphological change in Asian dust particles owing to coating process of anthropogenic pollutants is still statistically unclear. Here, we first used a newly developed, single-particle polarization detector and quantitatively investigate the evolution of the polarization property of backscattering light reflected from dust particle as they were mixing with anthropogenic pollutants in North China. The decrease in observed depolarization ratio is mainly attributed to the decrease of aspect ratio of the dust particles as a result of continuous coating processes. Hygroscopic growth of Calcium nitrate (Ca(NO3)2) on the surface of the dust particles played a vital role, particularly when they are stagnant in the polluted region with high RH conditions. Reliable statistics highlight the significant importance of internally mixed, 'quasi-spherical' Asian dust particles, which markedly act as cloud condensation nuclei and exert regional climate change.

元の言語英語
記事番号335
ジャーナルScientific reports
7
発行部数1
DOI
出版物ステータス出版済み - 12 1 2017

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dust
pollution
coating
polarization
cloud condensation nucleus
pollutant
regional climate
particle
calcium
nitrate
climate change
mineral

All Science Journal Classification (ASJC) codes

  • General

これを引用

Real-time observational evidence of changing Asian dust morphology with the mixing of heavy anthropogenic pollution. / Pan, Xiaole; Uno, Itsushi; Wang, Zhe; Nishizawa, Tomoaki; Sugimoto, Nobuo; Yamamoto, Shigekazu; Kobayashi, Hiroshi; Sun, Yele; Fu, Pingqing; Tang, Xiao; Wang, Zifa.

:: Scientific reports, 巻 7, 番号 1, 335, 01.12.2017.

研究成果: ジャーナルへの寄稿記事

Pan, X, Uno, I, Wang, Z, Nishizawa, T, Sugimoto, N, Yamamoto, S, Kobayashi, H, Sun, Y, Fu, P, Tang, X & Wang, Z 2017, 'Real-time observational evidence of changing Asian dust morphology with the mixing of heavy anthropogenic pollution', Scientific reports, 巻. 7, 番号 1, 335. https://doi.org/10.1038/s41598-017-00444-w
Pan, Xiaole ; Uno, Itsushi ; Wang, Zhe ; Nishizawa, Tomoaki ; Sugimoto, Nobuo ; Yamamoto, Shigekazu ; Kobayashi, Hiroshi ; Sun, Yele ; Fu, Pingqing ; Tang, Xiao ; Wang, Zifa. / Real-time observational evidence of changing Asian dust morphology with the mixing of heavy anthropogenic pollution. :: Scientific reports. 2017 ; 巻 7, 番号 1.
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abstract = "Natural mineral dust and heavy anthropogenic pollution and its complex interactions cause significant environmental problems in East Asia. Due to restrictions of observing technique, real-time morphological change in Asian dust particles owing to coating process of anthropogenic pollutants is still statistically unclear. Here, we first used a newly developed, single-particle polarization detector and quantitatively investigate the evolution of the polarization property of backscattering light reflected from dust particle as they were mixing with anthropogenic pollutants in North China. The decrease in observed depolarization ratio is mainly attributed to the decrease of aspect ratio of the dust particles as a result of continuous coating processes. Hygroscopic growth of Calcium nitrate (Ca(NO3)2) on the surface of the dust particles played a vital role, particularly when they are stagnant in the polluted region with high RH conditions. Reliable statistics highlight the significant importance of internally mixed, 'quasi-spherical' Asian dust particles, which markedly act as cloud condensation nuclei and exert regional climate change.",
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AU - Sugimoto, Nobuo

AU - Yamamoto, Shigekazu

AU - Kobayashi, Hiroshi

AU - Sun, Yele

AU - Fu, Pingqing

AU - Tang, Xiao

AU - Wang, Zifa

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