GSTDTAP  > 地球科学
DOI10.5194/acp-19-10239-2019
Biogenic and anthropogenic sources of aerosols at the High Arctic site Villum Research Station
Nielsen, Ingeborg E.1; 39;Osto, Manuel2
2019-08-13
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:15
文章类型Article
语种英语
国家Denmark; Sweden; Spain; Finland; USA; Estonia
英文摘要

There are limited measurements of the chemical composition, abundance and sources of atmospheric particles in the High Arctic To address this, we report 93 d of soot particle aerosol mass spectrometer (SP-AMS) data collected from 20 February to 23 May 2015 at Villum Research Station (VRS) in northern Greenland (81 degrees 36' N). During this period, we observed the Arctic haze phenomenon with elevated PM1 concentrations ranging from an average of 2.3, 2.3 and 3.3 mu g m(-3) in February, March and April, respectively, to 1.2 mu g m(-3) in May. Particulate sulfate (SO42-) accounted for 66 % of the non-refractory PM1 with the highest concentration until the end of April and decreasing in May. The second most abundant species was organic aerosol (OA) (24 %). Both OA and PM1, estimated from the sum of all collected species, showed a marked decrease throughout May in accordance with the polar front moving north, together with changes in aerosol removal processes. The highest refractory black carbon (rBC) concentrations were found in the first month of the campaign, averaging 0.2 mu g m(-3). In March and April, rBC averaged 0.1 mu g m(-3) while decreasing to 0.02 mu g m(-3) in May.


Positive matrix factorization (PMF) of the OA mass spectra yielded three factors: (1) a hydrocarbon-like organic aerosol (HOA) factor, which was dominated by primary aerosols and accounted for 12 % of OA mass, (2) an Arctic haze organic aerosol (AOA) factor and (3) a more oxygenated marine organic aerosol (MOA) factor. AOA dominated until mid-April (64 %-81 % of OA), while being nearly absent from the end of May and correlated significantly with SO42-, suggesting the main part of that factor is secondary OA. The MOA emerged late at the end of March, where it increased with solar radiation and reduced sea ice extent and dominated OA for the rest of the campaign until the end of May (24 %-74 % of OA), while AOA was nearly absent. The highest O/C ratio (0.95) and S/C ratio (0.011) was found for MOA. Our data support the current understanding that Arctic aerosols are highly influenced by secondary aerosol formation and receives an important contribution from marine emissions during Arctic spring in remote High Arctic areas. In view of a changing Arctic climate with changing sea-ice extent, biogenic processes and corresponding source strengths, highly time-resolved data are needed in order to elucidate the components dominating aerosol concentrations and enhance the understanding of the processes taking place.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000481493000005
WOS关键词POSITIVE MATRIX FACTORIZATION ; LONG-TERM TRENDS ; BLACK CARBON ; MASS-SPECTROMETER ; ORGANIC AEROSOLS ; SOURCE APPORTIONMENT ; DIMETHYL SULFIDE ; LIGHT-ABSORPTION ; HIGH-RESOLUTION ; AIR-POLLUTION
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/185952
专题地球科学
作者单位1.Aarhus Univ, Dept Environm Sci, DK-4000 Roskilde, Denmark;
2.Aarhus Univ, Arctic Res Ctr, DK-8000 Aarhus, Denmark;
3.Lund Univ, Div Ergon & Aerosol Technol, POB 118, S-22100 Lund, Sweden;
4.Lund Univ, Div Nucl Phys, POB 118, S-22100 Lund, Sweden;
5.Univ Southern Denmark, Inst Chem Engn & Biotechnol & Environm Technol, DK-5230 Odense, Denmark;
6.CSIC, Inst Marine Sci, Passeig Maritim Barceloneta 37-49, E-08003 Barcelona, Spain;
7.Univ Helsinki, Fac Sci, Inst Atmospher & Earth Syst Res Phys, Helsinki 00140, Finland;
8.Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA;
9.Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA;
10.Univ Tartu, Inst Phys, Ulikooli 18, EE-50090 Tartu, Estonia
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Nielsen, Ingeborg E.,39;Osto, Manuel. Biogenic and anthropogenic sources of aerosols at the High Arctic site Villum Research Station[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(15).
APA Nielsen, Ingeborg E.,&39;Osto, Manuel.(2019).Biogenic and anthropogenic sources of aerosols at the High Arctic site Villum Research Station.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(15).
MLA Nielsen, Ingeborg E.,et al."Biogenic and anthropogenic sources of aerosols at the High Arctic site Villum Research Station".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.15(2019).
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