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

被引：48

作者：

Pan, Xiaole ^{[1
]}

Uno, Itsushi ^{[1
]}

Hara, Yukari ^{[1
]}

Kuribayashi, Masatoshi ^{[1
]}

Kobayashi, Hiroshi ^{[2
]}

Sugimoto, Nobuo ^{[3
]}

Yamamoto, Shigekazu ^{[4
]}

Shimohara, Takaaki ^{[4
]}

Wang, Zifa ^{[5
]}

机构：

[1] Kyushu Univ, Res Inst Appl Mech, Fukuoka 812, Japan

[2] Univ Yamanashi, Dept Ecosocial Syst Engn, Kofu, Yamanashi, Japan

[3] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan

[4] Fukuoka Inst Hlth & Environm Sci, Fukuoka, Japan

[5] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 05期

基金：

日本学术振兴会;

关键词：

dust aerosols; anthropogenic pollutants; depolarization ratio; East Asia; OPTICAL PARTICLE COUNTER; ACE-ASIA;

D O I：

10.1002/2014GL062491

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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, similar to 64% of the total nitrate mass was deemed to be transported from outside of Japan due to a trapping effect in the dust plume.

引用

页码：1593 / 1598

页数：6

共 11 条

[1] Impact of long-range transport of aerosols on the PM2.5 composition at a major metropolitan area in the northern Kyushu area of Japan [J].