DOI: 10.1002/2015JD024479
论文题名: Effects of wet deposition on the abundance and size distribution of black carbon in East Asia
作者: Kondo Y. ; Moteki N. ; Oshima N. ; Ohata S. ; Koike M. ; Shibano Y. ; Takegawa N. ; Kita K.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 9 起始页码: 4691
结束页码: 4712
语种: 英语
英文关键词: black carbon
; wet deposition
Scopus关键词: black carbon
; carbon emission
; carbon monoxide
; climate modeling
; concentration (composition)
; radiative forcing
; seasonal variation
; size distribution
; troposphere
; wet deposition
; China
英文摘要: An improved understanding of the variations in the mass concentration and size distribution of black carbon (BC) in the free troposphere (FT) over East Asia, where BC emissions are very high, is needed to reliably estimate the radiative forcing of BC in climate models. We measured these parameters and the carbon monoxide (CO) concentration by conducting the Aerosol Radiative Forcing in East Asia (A-FORCE) 2013W aircraft campaign in East Asia in winter 2013 and compared these data with measurements made in the same region in spring 2009. The median BC concentrations in the FT originating from North China (NC) and South China (SC) showed different seasonal variations, which were primarily caused by variations in meteorological conditions. CO concentrations above the background were much higher in SC than in NC in both seasons, suggesting a more active upward transport of CO. In SC, precipitation greatly increased from winter to spring, leading to an increased wet deposition of BC. As a result, the median BC concentration in the FT was highest in SC air in winter. This season and region were optimal for the effective transport of BC from the planetary boundary layer to the FT. The count median diameters of the BC size distributions generally decreased with altitude via wet removal during upward transport. The altitude dependence of the BC size distributions was similar in winter and spring, in accord with the similarity in the BC mixing state. The observed BC concentrations and microphysical properties will be useful for evaluating the performance of climate models. © 2016. American Geophysical Union. All Rights Reserved. 资助项目: 23221001
; 26241003
; 26701004
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62884
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: National Institute of Polar Research, Tachikawa, Japan; Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan; Meteorological Research Institute, Tsukuba, Japan; Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Japan; Department of Environmental Sciences, Faculty of Science, Ibaraki University, Mito, Japan
Recommended Citation:
Kondo Y.,Moteki N.,Oshima N.,et al. Effects of wet deposition on the abundance and size distribution of black carbon in East Asia[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(9)