Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027286 |
Effects of chemical composition and mixing state on size-resolved hygroscopicity and cloud condensation nuclei activity of submicron aerosols at a suburban site in northern Japan in summer | |
Mueller, Astrid1,2; Miyazaki, Yuzo1; Aggarwal, Shankar G.1,3; Kitamori, Yasuyuki1; Boreddy, Suresh K. R.1; Kawamura, Kimitaka1,4 | |
2017-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
![]() |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; India |
英文摘要 | Ambient hygroscopic properties, numbers of size-segregated cloud condensation nuclei (CCN) at different supersaturations (0.1%-0.8%), and the chemical composition of submicron particles were simultaneously measured at a suburban site in northern Japan in summer. Two distinct periods with different growth factors (GF), CCN activation diameters, and chemical compositions were observed. The data suggest that internally mixed sulfate aerosols dominated the accumulation size mode in relatively aged aerosols during the first period, whereas particles observed during the latter periods showed external mixing dominated by organics, which was linked to low hygroscopicity and CCN activity. In particular, the higher loading of water-soluble organic matter (WSOM; similar to 60% of OM by mass) with increased WSOM/sulfate ratios corresponded to a low hygroscopicity parameter derived from the CCN measurement (kappa(CCN) = 0.15 +/- 0.02) at a dry diameter (D-dry) of 146 nm. The results suggest that WSOM, likely dominated by the influence of biogenic sources, contributed to reducing the hygroscopicity and CCN activation at this particle size. Temporal variations in the number concentrations for low GF mode at D-dry = 49.6 nm were similar to those in the elemental carbon (EC) concentration, suggesting that EC contributed to reducing hygroscopicity at this smaller size. Our results suggest that chemical composition and mixing state are important factors controlling the hygroscopicity and CCN activation of submicron particles. These results provide useful data sets of size-resolved subsaturated and supersaturated hygroscopicity and highlight the importance of the abundance of OM relative to sulfate in predicting the effects on climate change. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416387300021 |
WOS关键词 | SOLUBLE SURFACTANT PROPERTIES ; BOREAL FOREST ENVIRONMENT ; DROPLET GROWTH-KINETICS ; CCN ACTIVITY ; ATMOSPHERIC AEROSOL ; PARTICLE FORMATION ; ALPHA-PINENE ; ACTIVATION ; URBAN ; CARBON |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/32773 |
专题 | 气候变化 |
作者单位 | 1.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan; 2.Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido, Japan; 3.CSIR Natl Phys Lab, New Delhi, India; 4.Chubu Univ, Chubu Inst Adv Studies, Kasugai, Aichi, Japan |
推荐引用方式 GB/T 7714 | Mueller, Astrid,Miyazaki, Yuzo,Aggarwal, Shankar G.,et al. Effects of chemical composition and mixing state on size-resolved hygroscopicity and cloud condensation nuclei activity of submicron aerosols at a suburban site in northern Japan in summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(17). |
APA | Mueller, Astrid,Miyazaki, Yuzo,Aggarwal, Shankar G.,Kitamori, Yasuyuki,Boreddy, Suresh K. R.,&Kawamura, Kimitaka.(2017).Effects of chemical composition and mixing state on size-resolved hygroscopicity and cloud condensation nuclei activity of submicron aerosols at a suburban site in northern Japan in summer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(17). |
MLA | Mueller, Astrid,et al."Effects of chemical composition and mixing state on size-resolved hygroscopicity and cloud condensation nuclei activity of submicron aerosols at a suburban site in northern Japan in summer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.17(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论