IEECAS OpenIR  > 粉尘与环境研究室
Sources and physicochemical characteristics of black carbon aerosol from the southeastern Tibetan Plateau: internal mixing enhances light absorption
Wang, Qiyuan1; Cao, Junji1,2; Han, Yongming1,3; Tian, Jie4; Zhu, Chongshu1; Zhang, Yonggang1; Zhang, Ningning1; Shen, Zhenxing4; Ni, Haiyan1; Zhao, Shuyu1; Wu, Jiarui1
2018-04-05
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号18期号:7页码:4639-4656
文章类型Article
摘要Black carbon (BC) aerosol has important effects on the climate and hydrology of the Tibetan Plateau (TP). An intensive measurement campaign was conducted at Lulang (similar to 3300 m a.s.l. - above sea level), southeastern TP, from September to October 2015, to investigate the sources and physicochemical characteristics of refractory BC (rBC) aerosol. The average rBC mass concentration was 0.31 +/- 0.55 mu g m(-3), which is higher than most prior results for BC on the TP. A clear diurnal cycle in rBC showed high values in the morning and low values in the afternoon. A bivariate polar plot showed that rBC loadings varied with wind speed and direction, which also reflected the dominant transport direction. The estimated net surface rBC transport intensity was +/- 0.05 +/- 0.29 mu g s(-1) m(-2), indicating stronger transport from outside the TP compared with its interior. Cluster analysis and a concentration-weighted trajectory model connected emissions from north India to the high rBC loadings, but the effects of internal TP sources should not be overlooked. The average mass median diameter (MMD) of rBC was 160 +/- 23 nm, with smaller MMDs on rainy days (145 nm) compared with non-rainy days (164 nm). The average number fraction of thickly coated rBC (F-rBC) was 39 +/- 8 %, and it increased with the O-3 mixing ratios from 10:00 to 14:00 LT, indicating that photochemical oxidation played a role in forming rBC coatings. The average rBC absorption enhancement (E-abs) was estimated to be 1.9, suggesting that light absorption by coated rBC particles was greater than for uncoated ones. The E-abs was strongly positively correlated with the F-rBC, indicating an amplification of light absorption for internally mixed rBC. For rBC cores < 170 nm, E-abs was negatively correlated with MMD, but it was nearly constant for rBC cores > 170 nm. Our study provides insight into the sources and evolution of rBC aerosol on the TP, and the results should be useful for improving models of the radiative effects of carbonaceous aerosols in this area.
WOS标题词Science & Technology ; Physical Sciences
DOI10.5194/acp-18-4639-2018
关键词[WOS]PARTICLE SOOT PHOTOMETER ; BROWN CARBON ; SIZE DISTRIBUTION ; CLIMATE-CHANGE ; COASTAL CITY ; SOUTH CHINA ; ICE CORE ; STATE ; GLACIER ; HIMALAYAS
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000429211100005
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5209
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China
4.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Wang, Qiyuan,Cao, Junji,Han, Yongming,et al. Sources and physicochemical characteristics of black carbon aerosol from the southeastern Tibetan Plateau: internal mixing enhances light absorption[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(7):4639-4656.
APA Wang, Qiyuan.,Cao, Junji.,Han, Yongming.,Tian, Jie.,Zhu, Chongshu.,...&Wu, Jiarui.(2018).Sources and physicochemical characteristics of black carbon aerosol from the southeastern Tibetan Plateau: internal mixing enhances light absorption.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(7),4639-4656.
MLA Wang, Qiyuan,et al."Sources and physicochemical characteristics of black carbon aerosol from the southeastern Tibetan Plateau: internal mixing enhances light absorption".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.7(2018):4639-4656.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Sources and physicoc(1853KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, Qiyuan]的文章
[Cao, Junji]的文章
[Han, Yongming]的文章
百度学术
百度学术中相似的文章
[Wang, Qiyuan]的文章
[Cao, Junji]的文章
[Han, Yongming]的文章
必应学术
必应学术中相似的文章
[Wang, Qiyuan]的文章
[Cao, Junji]的文章
[Han, Yongming]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。