Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-16689-2018 |
The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed | |
Giordano, Michael R.1; Kalnajs, Lars E.3; Goetz, J. Douglas1,5; Avery, Anita M.1,6; Katz, Erin2; May, Nathaniel W.4; Leemon, Anna4; Mattson, Claire4; Pratt, Kerri A.4; DeCarlo, Peter F.1,2 | |
2018-11-26 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:22页码:16689-16711 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A fundamental understanding of the processes that control Antarctic aerosols is necessary in determining the aerosol impacts on climate-relevant processes from Antarctic ice cores to clouds. The first in situ observational online composition measurements by an aerosol mass spectrometer (AMS) of Antarctic aerosols were only recently performed during the Two-Season Ozone Depletion and Interaction with Aerosols Campaign (2ODIAC). 2ODIAC was deployed to sea ice on the Ross Sea near McMurdo Station over two field seasons: austral spring-summer 2014 and winter-spring 2015. The results presented here focus on the overall trends in aerosol composition primarily as functions of air masses and local meteorological conditions. The results suggest that the impact of long-range air mass back trajectories on either the absolute or relative concentrations of the aerosol constituents measured by (and inferred from) an AMS at a coastal location is small relative to the impact of local meteorology. However, when the data are parsed by wind speed, two observations become clear. First, a critical wind speed is required to loft snow from the surface, which, in turn, increases particle counts in all measured size bins. Second, elevated wind speeds showed increased aerosol chloride and sodium. Further inspection of the AMS data shows that the increased chloride concentrations have more of a "fast-vaporizing" nature than chloride measured at low wind speed. Also presented are the Cl : Na ratios of snow samples and aerosol filter samples, as measured by ion chromatography, as well as non-chloride aerosol constituents measured by the AMS. Additionally, submicron aerosol iodine and bromine concentrations as functions of wind speed are also presented. The results presented here suggest that aerosol composition in coastal Antarctica is a strong function of wind speed and that the mechanisms determining aerosol composition are likely linked to blowing snow. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451218800003 |
WOS关键词 | SEA-SALT AEROSOL ; BOUNDARY-LAYER AEROSOL ; OZONE DEPLETION EVENTS ; ROSS ISLAND REGION ; SOUTH-POLE ; ATMOSPHERIC CHEMISTRY ; PARTICLE FORMATION ; MOLECULAR BROMINE ; INORGANIC BROMINE ; MASS-SPECTROMETER |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/21686 |
专题 | 地球科学 |
作者单位 | 1.Drexel Univ, Dept Civil Architectural & Environm Engn, Philadelphia, PA 19104 USA; 2.Drexel Univ, Dept Chem, Philadelphia, PA 19104 USA; 3.Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA; 4.Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA; 5.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 6.Aerodyne Res Inc, Billerica, MA USA |
推荐引用方式 GB/T 7714 | Giordano, Michael R.,Kalnajs, Lars E.,Goetz, J. Douglas,et al. The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(22):16689-16711. |
APA | Giordano, Michael R..,Kalnajs, Lars E..,Goetz, J. Douglas.,Avery, Anita M..,Katz, Erin.,...&DeCarlo, Peter F..(2018).The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(22),16689-16711. |
MLA | Giordano, Michael R.,et al."The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.22(2018):16689-16711. |
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