Single particle characterization of blackcarbon aerosol in the Northeast TibetanPlateau, China | |
Wang,QY[1,2]; Schwarz,JP[3,4]; Cao,JJ[2,5]; Gao,RS[3]; Fahey,DW[3,4]; Hu,TF[2] | |
2012 | |
发表期刊 | Atmospheric Chemistry and Physics Discussions |
卷号 | 12页码:21947-21976 |
文章类型 | 期刊论文 |
摘要 | Refractory black carbon (rBC) mass, size distribution, and mixing state were measured with a ground-based Single Particle Soot Photometer (SP2) at Qinghai Lake (QHL), a rural area in the Northeastern Tibetan Plateau of China, during October 2011. The average measured rBC mass concentration of 0.36 µgSTP-m−3 is significantly higher than the concentrations measured in background and remote regions around the globe. The diurnal variation of rBC concentration showed nocturnal peak and afternoon low concentrations and showed a loose anticorrelation to the variation of mixed layer depths, indicating nighttime trapping of emissions and daytime ventilation. The high rBC values and their diurnal behavior strongly suggest that the QHL area was heavily influenced by local rBC sources. The mass size distribution of rBC showed a primary mode peak at 175-nm diameter and a small secondary mode peak at 495 nm volume-equivalent diameter assuming 2 gcm−3 void free density. About 40 % of the observed rBC particles within the detectable size range were mixed with large amounts of non-refractory materials present as a thick coating. A comparison of the Aethalometer and SP2 measurements suggests that there are non-BC species strongly affecting the Aethalometer measurement and, therefore, the Aethalometer measurements are not reliable for rBC determinations in the Tibetan Plateau region without artifact corrections. The apparent black-carbon specific, mass-absorption cross section derived from the Aethalometer and SP2 data was 37.5 m2 g−1 at a wavelength of 880 nm. A strong correlation was found between rBC and CO with a slope of 1.5 ± 0.1 ngSTP-m−3 ppbv−1, similar to values of mixed rural emissions. |
DOI | 10.5194/acpd-12-21947-2012 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10925 |
专题 | 粉尘与环境研究室 |
通讯作者 | Cao,JJ[2,5] |
作者单位 | 1.Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an710049, China; 2.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy ofSciences, Xi’an 710075, China; 3.Chemical Sciences Division, Earth System Research Laboratory, NOAA, Boulder, Colorado,USA; 4.Cooperative Institute for Research in Environmental Sciences, University of Colorado,Boulder, Colorado USA; 5.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China |
推荐引用方式 GB/T 7714 | Wang,QY[1,2],Schwarz,JP[3,4],Cao,JJ[2,5],et al. Single particle characterization of blackcarbon aerosol in the Northeast TibetanPlateau, China[J]. Atmospheric Chemistry and Physics Discussions,2012,12:21947-21976. |
APA | Wang,QY[1,2],Schwarz,JP[3,4],Cao,JJ[2,5],Gao,RS[3],Fahey,DW[3,4],&Hu,TF[2].(2012).Single particle characterization of blackcarbon aerosol in the Northeast TibetanPlateau, China.Atmospheric Chemistry and Physics Discussions,12,21947-21976. |
MLA | Wang,QY[1,2],et al."Single particle characterization of blackcarbon aerosol in the Northeast TibetanPlateau, China".Atmospheric Chemistry and Physics Discussions 12(2012):21947-21976. |
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