Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026897 |
Aerosol Properties Observed in the Subtropical North Pacific Boundary Layer | |
Royalty, T. M.1; Phillips, B. N.1; Dawson, K. W.1; Reed, R.2; Meskhidze, N.1; Petters, M. D.1 | |
2017-09-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The impact of anthropogenic aerosol on climate forcing remains uncertain largely due to inadequate representation of natural aerosols in climate models. The marine boundary layer (MBL) might serve as a model location to study natural aerosol processes. Yet source and sink mechanisms controlling the MBL aerosol number, size distribution, chemical composition, and hygroscopic properties remain poorly constrained. Here aerosol size distribution and water uptake measurements were made aboard the R/V Hi'ialakai from 27 June to 3 July 2016 in the subtropical North Pacific Ocean. Size distributions were predominantly bimodal with an average integrated number concentration of 197 +/- 98 cm(-3). Hygroscopic growth factors were measured using the tandem differential mobility analyzer technique for dry 48, 96, and 144 nm particles. Mode kappa values for these were 0.57 +/- 0.12, 0.51 +/- 0.09, and 0.52 +/- 0.08, respectively. To better understand remote MBL aerosol sources, a new algorithm was developed which decomposes hygroscopicity distributions into three classes: carbon-containing particles, sulfate-like particles, and sodium-containing particles. Results from this algorithm showed low and steady sodium-containing particle concentrations while the sulfate-like and carbon-containing particle concentrations varied during the cruise. According to the classification scheme, carbon-containing particles contributed at least 3-7%, sulfate-like particles contributed at most 77-88% and sodium-containing particles at least contributed 9-16% to the total aerosol number concentration. Size distribution and hygroscopicity data, in conjunction with air mass back trajectory analysis, suggested that the aerosol budget in the subtropical North Pacific MBL may be controlled by aerosol entrainment from the free troposphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416388000026 |
WOS关键词 | CLOUD CONDENSATION NUCLEI ; PRIMARY ORGANIC AEROSOL ; DIFFERENTIAL MOBILITY ANALYZER ; HYGROSCOPICITY PARAMETER KAPPA ; SEA SPRAY AEROSOL ; MARINE AEROSOL ; CHEMICAL-COMPOSITION ; PARTICLE FORMATION ; CCN ACTIVITY ; SIZE DISTRIBUTION |
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/32547 |
专题 | 气候变化 |
作者单位 | 1.North Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA; 2.North Carolina State Univ, Dept Appl Ecol, Raleigh, NC 27695 USA |
推荐引用方式 GB/T 7714 | Royalty, T. M.,Phillips, B. N.,Dawson, K. W.,et al. Aerosol Properties Observed in the Subtropical North Pacific Boundary Layer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(18). |
APA | Royalty, T. M.,Phillips, B. N.,Dawson, K. W.,Reed, R.,Meskhidze, N.,&Petters, M. D..(2017).Aerosol Properties Observed in the Subtropical North Pacific Boundary Layer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(18). |
MLA | Royalty, T. M.,et al."Aerosol Properties Observed in the Subtropical North Pacific Boundary Layer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.18(2017). |
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