Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-5889-2019 |
Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations | |
Deng, Yange1,2; Yai, Hikari1; Fujinari, Hiroaki1; Kawana, Kaori3,4; Nakayama, Tomoki2,5; Mochida, Michihiro1,2 | |
2019-05-06 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:9页码:5889-5903 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Formation of biogenic secondary organic aerosol (BSOA) and its subsequent evolution can modify the hygroscopicity of the organic aerosol component (OA) in the forest atmosphere, and affect the concentrations of cloud condensation nuclei (CCN) there. In this study, size-resolved aerosol hygroscopic growth at 85 % relative humidity and size-resolved aerosol composition were measured using a hygroscopic tandem differential mobility analyzer and an aerosol mass spectrometer, respectively, at a forest site in Wakayama, Japan, in August and September 2015. The hygroscopicity parameter of OA (kappa(org)) presented daily minima in the afternoon hours, and it also showed an increase with the increase in particle dry diameter. The magnitudes of the diurnal variations in k org for particles with dry diameters of 100 and 300 nm were on average 0.091 and 0.096, respectively, and the difference in kappa(org) between particles with dry diameters of 100 and 300 nm was on average 0.056. The relative contributions of the estimated fresh BSOA and regional OA to total OA could explain 40 % of the observed diurnal variations and size dependence of kappa(org). The hygroscopicity parameter of fresh BSOA was estimated to range from 0.089 to 0.12 for particles with dry diameters from 100 to 300 nm. Compared with the use of time- and size-resolved kappa(org), the use of time- and size-averaged kappa(org) leads to under- and overestimation of the fractional contribution of OA to CCN number concentrations in the range from -5.0 % to 26 %. This indicates that the diurnal variations and size dependence of kappa(org) strongly affect the overall contribution of OA to CCN concentrations. The fractional contribution of fresh BSOA to CCN number concentrations could reach 0.28 during the period of intensive BSOA formation. The aging of the fresh BSOA, if it occurs, increases the estimated contribution of BSOA to CCN number concentrations by 52%-84%. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466950500001 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; GROWTH ; VOLATILITY ; DOWNWIND ; AMBIENT ; SURFACE ; NUCLEI ; IMPACT ; LINK |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183165 |
专题 | 地球科学 |
作者单位 | 1.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan; 2.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 3.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan; 4.Japan Agcy Marine Earth Sci & Technol, Res & Dev Ctr Global Change, Yokohama, Kanagawa, Japan; 5.Nagasaki Univ, Grad Sch Fisheries & Environm Sci, Nagasaki, Japan |
推荐引用方式 GB/T 7714 | Deng, Yange,Yai, Hikari,Fujinari, Hiroaki,et al. Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(9):5889-5903. |
APA | Deng, Yange,Yai, Hikari,Fujinari, Hiroaki,Kawana, Kaori,Nakayama, Tomoki,&Mochida, Michihiro.(2019).Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(9),5889-5903. |
MLA | Deng, Yange,et al."Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.9(2019):5889-5903. |
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