Browsing by Author "Cao, Junji"
Now showing items 1-7 of 7
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Black carbon aerosol characterization in a remote area of qinghai–tibetan plateau, western china
Wang, Qiyuan; Schwarz, J.P.; Cao, Junji; Gao, Rushan; Fahey, D.W.; Hu, Tafeng; Huang, R.-J.; Han, Yongming; Shen, Zhenxing (Elsevier BV, 2014-05-01) -
Characteristics of black carbon aerosol during the chinese lunar year and weekdays in xi’an, china
Wang, Qiyuan; Liu, Suixin; Zhou, Yaqing; Cao, Junji; Han, Yongming; Ni, Haiyan; Zhang, Ningning; Huang, Rujin (MDPI AG, 2015-02-05)Black carbon (BC) aerosol plays an important role in climate forcing. The net radiative effect is strongly dependent on the physical properties of BC particles. A single particle soot photometer and a carbon monoxide ... -
Characteristics of organic and elemental carbon in pm2.5 and pm0.25 in indoor and outdoor environments of a middle school: secondary formation of organic carbon and sources identification
Xu, Hongmei; Guinot, Benjamin; Shen, Zhenxing; Ho, Kin; Niu, Xinyi; Xiao, Shun; Huang, Ru-Jin; Cao, Junji (MDPI AG, 2015-03-17)Secondary organic carbon (SOC) formation and its effects on human health require better understanding in Chinese megacities characterized by a severe particulate pollution and robust economic reform. This study investigated ... -
Mixing state of black carbon aerosol in a heavily polluted urban area of china: implications for light absorption enhancement
Wang, Qiyuan; Huang, R.-J.; Cao, Junji; Han, Yongming; Wang, Gehui; Li, Guohui; Wang, Yichen; Dai, Wenting; Zhang, Renjian; Zhou, Yaqing (Informa UK Limited, 2014-05-19)Black carbon (BC) is important for climate forcing, and its effects on the Earth's radiative balance remain a major uncertainty in climate models. In this study, we investigated the mixing state of refractory black carbon ... -
Organosulfates in atmospheric aerosol: synthesis and quantitative analysis of pm<sub>2.5</sub> from xi'an, northwestern china
Huang, Ru-Jin; Cao, Junji; Chen, Yang; Yang, Lu; Shen, Jincan; You, Qihua; Wang, Kai; Lin, Chunshui; Xu, Wei; Gao, Bo; Li, Yongjie; Chen, Qi; Hoffmann, Thorsten; O'Dowd, Colin D.; Bilde, Merete; Glasius, Marianne (Copernicus GmbH, 2018-06-18)The sources, formation mechanism and amount of organosulfates (OS) in atmospheric aerosol are not yet well understood, partly due to the lack of authentic standards for quantification. In this study, we report an improved ... -
Seasonal variations of anhydrosugars in pm2.5 in the pearl river delta region, china
Ho, Kin Fai; Engling, Guenter; Sai Hang Ho, Steven; Huang, Rujin; Lai, Senchao; Cao, Junji; Lee, Shun Cheng (Informa UK Limited, 2014-01-01)Anhydrosugars including levoglucosan and mannosan are the most effective organic tracers for biomass burning aerosol in the atmosphere. In this study, to investigate the contribution of biomass burning emissions to the ... -
Severe pollution in china amplified by atmospheric moisture
Tie, Xuexi; Huang, Ru-Jin; Cao, Junji; Zhang, Qiang; Cheng, Yafang; Su, Hang; Chang, Di; Pöschl, Ulrich; Hoffmann, Thorsten; Dusek, Uli; Li, Guohui; Worsnop, Douglas R.; O’Dowd, Colin D. (Springer Nature, 2017-11-17)In recent years, severe haze events often occurred in China, causing serious environmental problems. The mechanisms responsible for the haze formation, however, are still not well understood, hindering the forecast and ...