Investigation of the CCN activity, BC and UVBC mass concentrations of biomass burning aerosols during the 2013 BASELInE campaign

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题名:	Investigation of the CCN activity, BC and UVBC mass concentrations of biomass burning aerosols during the 2013 BASELInE campaign
作者:	林能暉;Hsiao, Ta-Chih;Ye, Wei-Cheng;Wang, Sheng-Hsiang;Tsay, Si-Chee;Chen, Wei-Nai;Lin, Neng-Huei;Lee, Chung-Te;Hung, Hui-Ming;Chuang, Ming-Tung;Chantara, Somporn
贡献者:	地球科學學院大氣科學學系
日期:	2016-11-01
上传时间:	2026-04-21 14:18:53 (UTC+8)
出版者:	AAGR Aerosol and Air Quality Research;Cham: Springer International Publishing
摘要:	摘要： Biomass-burning (BB) aerosols, acting as cloud condensation nuclei (CCN), can influence cloud microphysical and radiative properties. In this study, we present CCN measured near the BB source regions over northern Southeast Asia (Doi Ang Khang, Thailand) and at downwind receptor areas (Lulin Atmospheric Background Station, Taiwan), focusing exclusively on 13–20 March 2013 as part of 2013 spring campaign of the Seven SouthEast Asian Studies (7-SEAS) intensive observation. One of the campaign’s objectives is to characterize BB aerosols serving as CCN in SouthEast Asia (SEA). CCN concentrations were measured by a CCN counter at 5 supersaturation (SS) levels: 0.15%, 0.30%, 0.45%, 0.60%, and 0.75%. In addition, PM 2.5 and black carbon mass concentrations were analyzed by using a tapered element oscillating microbalance and an aethalometer. It was found the number-size distributions and the characteristics of hygroscopicity (e.g., activation ratio and κ ) of BB aerosols in SEA have a strong diurnal pattern, and different behaviors of patterns were characterized under two distinct weather systems. The overall average κ value was low (0.05–0.1) but comparable with previous CCN studies in other BB source regions. Furthermore, a large fraction of UV-absorbing organic material (UVBC) and high Delta-C among BB aerosols were also observed, which suggest the existence of substantial particulate organic matter in fresh BB aerosols. These data provide the most extensive characterization of BB aerosols in SEA until now. 其他題名： Aerosol Air Qual. Res 出版者： Cham: Springer International Publishing 出版日期： 2016-11-01 出處： Aerosol and air quality research, 2016-11, Vol.16 (11), p.2742-2756 版權： Taiwan Association for Aerosol Research 2016 識別號： ISSN: 1680-8584 識別號： ISSN: 2071-1409 識別號： EISSN: 2071-1409 識別號： DOI: 10.4209/aaqr.2015.07.0447
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