Transport of anthropogenic aerosols from Asia and subsequent chemical transformation
Transport of anthropogenic aerosols from Asia and subsequent chemical transformation
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来自亚洲的人为气溶胶的输送和随后的化学转化
DOI：
10.1029/2006jd008120
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发表时间：
2007
影响因子：
--
通讯作者：
S. Hatakeyama
中科院分区：
文献类型：
--
作者：
A. Takami;T. Miyoshi;A. Shimono;N. Kaneyasu;Shungo Kato;Y. Kajii;S. Hatakeyama
[1]2005年3月，在ABC/EAREX项目期间，在日本冲绳的海多角（CHO）使用高时间分辨率仪器测量了气溶胶化学成分和气态物质，这些仪器包括：Aerodyne四极气溶胶质谱仪（Q-AMS）、锥形元件振荡微量天平（TEOM）、和气体监测器，以调查东亚地区气溶胶的输送和随后的化学转化。细颗粒气溶胶模式中硫酸盐是优势物种，铵、硫酸盐和有机物的平均浓度分别为1.25、6.37和2.16 μg m-3。2005年在CHO观测到的硫酸盐浓度比1994年高出约1.5-2倍。对于大多数高硫酸盐观测，空气质量是从中国中东部地区（上海和山东半岛之间）输送的。硫酸盐输送是间歇性的，并且与天气尺度高/低压系统的通过密切相关。3月17-18日，化学成分及其浓度发生了明显变化，这是由气团来源和天气尺度天气系统的变化引起的。此外，它建议，在空气质量的差异，在空气质量的起源反映在CHO的化学成分。高浓度的硫酸盐需要以2.0%h −1的速率将SO2非均相转化为硫酸盐。在m/z = 44处的显著信号证实有机化合物被氧化。
[1] Aerosol chemical composition and gaseous species were measured at Cape Hedo, Okinawa, Japan (CHO), during the ABC/EAREX project period in March 2005, using high-time-resolution instruments including an Aerodyne quadrupole aerosol mass spectrometer (Q-AMS), a tapered element oscillating microbalance (TEOM), and gas monitors in order to investigate the transport and subsequent chemical transformation of aerosol in the east Asian region. Sulfate was the dominant species in fine aerosol mode and the average concentration of ammonium, sulfate and organics was 1.25, 6.37 and 2.16 μg m−3, respectively. The sulfate concentration observed at CHO in 2005 was about 1.5–2 times higher than that in 1994. For the majority of high-sulfate observations, the air mass was transported from the central east Chinese region (between Shanghai and the Shandong Peninsula). Sulfate transport was intermittent and strongly correlated with the passage of synoptic-scale high-/low-pressure systems. Chemical components and their concentration showed significant change on 17–18 March, which is accounted for by the change in air mass origin and the synoptic-scale weather system. In addition, it is suggested that the difference of air quality at the air mass origin reflects the chemical composition at CHO. The high sulfate concentration required heterogeneous conversion of SO2 to sulfate at a rate of 2.0% h−1. A pronounced signal at m/z = 44 confirmed that organic compounds were oxidized.
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影响因子：
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作者：
D. Parrish;Y. Kondo;O. Cooper;C. Brock;D. Jaffe;M. Trainer;T. Ogawa;G. Hübler;F. Fehsenfeld
通讯作者：
D. Parrish;Y. Kondo;O. Cooper;C. Brock;D. Jaffe;M. Trainer;T. Ogawa;G. Hübler;F. Fehsenfeld
影响因子：
4.4
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5
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通讯作者：
Hatakeyama, S
影响因子：
5.5
作者：
A. Takami;Wei Wang;D. Tang;S. Hatakeyama
通讯作者：
A. Takami;Wei Wang;D. Tang;S. Hatakeyama
影响因子：
5
作者：
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通讯作者：
Shungo Kato;Y. Kajii;Ryunosuke Itokazu;J. Hirokawa;S. Koda;Yoshikatsu Kinjo