Size dependence of wet removal of black carbon aerosols during transport from the boundary layer to the free troposphere
Size dependence of wet removal of black carbon aerosols during transport from the boundary layer to the free troposphere
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DOI：
10.1029/2012gl052034
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发表时间：
2012-07-04
影响因子：
5.2
通讯作者：
Kajino, M.
中科院分区：
文献类型：
--
作者：
Moteki, N.;Kondo, Y.;Kajino, M.
2009 年春季，飞机在东亚上空测量到的黑碳 (BC) 尺寸分布与从行星边界层上升到自由对流层的气团中的黑碳传输效率高度相关。平均单颗粒BC质量随着传输效率的降低而降低，这表明含有较大BC质量的气溶胶被更有效地去除。这是首次成功观察到气溶胶尺寸依赖性湿法去除，在质量上与科勒理论一致。高效提升到自由对流层的BC尺寸分布与行星边界层中的BC尺寸分布相似。相反，低效率隆起的BC的尺寸分布与自由对流层中背景空气的尺寸分布相似。我们得出的结论是，向上传输过程中的湿气去除对于控制自由对流层中黑碳的尺寸分布很重要。引文：Moteki, N.、Y. Kondo、N. Oshima、N. Takekawa、M. Koike、K. Kita、H. Matsui 和 M. Kajino (2012)，从边界层传输到自由对流层期间黑碳气溶胶湿法去除的尺寸依赖性，地球物理学。资源。快报，39，L13802，doi：10.1029/2012GL052034。
Size distributions of black carbon (BC) measured by aircraft over East Asia in spring 2009 were highly correlated with BC transport efficiency in air parcels uplifted from the planetary boundary layer to the free troposphere. The average single-particle BC mass decreased with decreasing transport efficiency, which suggests that aerosols containing larger BC mass were removed more efficiently. This is the first successful observation of the size-dependent wet removal of aerosols, qualitatively consistent with the Kohler theory. The size distribution of BC uplifted to the free troposphere with high efficiency was similar to the size distribution of BC in the planetary boundary layer. Conversely, the size distribution of BC uplifted with low efficiency was similar to that of background air in the free troposphere. We conclude that wet removal during upward transport is important in controlling the size distribution of BC in the free troposphere. Citation: Moteki, N., Y. Kondo, N. Oshima, N. Takegawa, M. Koike, K. Kita, H. Matsui, and M. Kajino (2012), Size dependence of wet removal of black carbon aerosols during transport from the boundary layer to the free troposphere, Geophys. Res. Lett., 39, L13802, doi: 10.1029/2012GL052034.