High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE
Observations of the organic components of the natural aerosol are scarce in Antarctica, which limits our understanding of natural aerosols and their connection to seasonal and spatial patterns of cloud albedo in the region. From November 2015 to December 2016, the ARM West Antarctic Radiation Experi...
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ftdoajarticles:oai:doaj.org/article:50b8c9df24c64dea8d00fae37dd21e94 2023-05-15T13:53:09+02:00 High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE J. Liu J. Dedrick L. M. Russell G. I. Senum J. Uin C. Kuang S. R. Springston W. R. Leaitch A. C. Aiken D. Lubin 2018-06-01T00:00:00Z https://doi.org/10.5194/acp-18-8571-2018 https://doaj.org/article/50b8c9df24c64dea8d00fae37dd21e94 EN eng Copernicus Publications https://www.atmos-chem-phys.net/18/8571/2018/acp-18-8571-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-8571-2018 1680-7316 1680-7324 https://doaj.org/article/50b8c9df24c64dea8d00fae37dd21e94 Atmospheric Chemistry and Physics, Vol 18, Pp 8571-8587 (2018) Physics QC1-999 Chemistry QD1-999 article 2018 ftdoajarticles https://doi.org/10.5194/acp-18-8571-2018 2022-12-30T20:48:09Z Observations of the organic components of the natural aerosol are scarce in Antarctica, which limits our understanding of natural aerosols and their connection to seasonal and spatial patterns of cloud albedo in the region. From November 2015 to December 2016, the ARM West Antarctic Radiation Experiment (AWARE) measured submicron aerosol properties near McMurdo Station at the southern tip of Ross Island. Submicron organic mass (OM), particle number, and cloud condensation nuclei concentrations were higher in summer than other seasons. The measurements included a range of compositions and concentrations that likely reflected both local anthropogenic emissions and natural background sources. We isolated the natural organic components by separating a natural factor and a local combustion factor. The natural OM was 150 times higher in summer than in winter. The local anthropogenic emissions were not hygroscopic and had little contribution to the CCN concentrations. Natural sources that included marine sea spray and seabird emissions contributed 56 % OM in summer but only 3 % in winter. The natural OM had high hydroxyl group fraction (55 %), 6 % alkane, and 6 % amine group mass, consistent with marine organic composition. In addition, the Fourier transform infrared (FTIR) spectra showed the natural sources of organic aerosol were characterized by amide group absorption, which may be from seabird populations. Carboxylic acid group contributions were high in summer and associated with natural sources, likely forming by secondary reactions. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Island Directory of Open Access Journals: DOAJ Articles Antarctic Ross Island McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Atmospheric Chemistry and Physics 18 12 8571 8587 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. Liu J. Dedrick L. M. Russell G. I. Senum J. Uin C. Kuang S. R. Springston W. R. Leaitch A. C. Aiken D. Lubin High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Observations of the organic components of the natural aerosol are scarce in Antarctica, which limits our understanding of natural aerosols and their connection to seasonal and spatial patterns of cloud albedo in the region. From November 2015 to December 2016, the ARM West Antarctic Radiation Experiment (AWARE) measured submicron aerosol properties near McMurdo Station at the southern tip of Ross Island. Submicron organic mass (OM), particle number, and cloud condensation nuclei concentrations were higher in summer than other seasons. The measurements included a range of compositions and concentrations that likely reflected both local anthropogenic emissions and natural background sources. We isolated the natural organic components by separating a natural factor and a local combustion factor. The natural OM was 150 times higher in summer than in winter. The local anthropogenic emissions were not hygroscopic and had little contribution to the CCN concentrations. Natural sources that included marine sea spray and seabird emissions contributed 56 % OM in summer but only 3 % in winter. The natural OM had high hydroxyl group fraction (55 %), 6 % alkane, and 6 % amine group mass, consistent with marine organic composition. In addition, the Fourier transform infrared (FTIR) spectra showed the natural sources of organic aerosol were characterized by amide group absorption, which may be from seabird populations. Carboxylic acid group contributions were high in summer and associated with natural sources, likely forming by secondary reactions. |
format |
Article in Journal/Newspaper |
author |
J. Liu J. Dedrick L. M. Russell G. I. Senum J. Uin C. Kuang S. R. Springston W. R. Leaitch A. C. Aiken D. Lubin |
author_facet |
J. Liu J. Dedrick L. M. Russell G. I. Senum J. Uin C. Kuang S. R. Springston W. R. Leaitch A. C. Aiken D. Lubin |
author_sort |
J. Liu |
title |
High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
title_short |
High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
title_full |
High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
title_fullStr |
High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
title_full_unstemmed |
High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE |
title_sort |
high summertime aerosol organic functional group concentrations from marine and seabird sources at ross island, antarctica, during aware |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-8571-2018 https://doaj.org/article/50b8c9df24c64dea8d00fae37dd21e94 |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) |
geographic |
Antarctic Ross Island McMurdo Station |
geographic_facet |
Antarctic Ross Island McMurdo Station |
genre |
Antarc* Antarctic Antarctica Ross Island |
genre_facet |
Antarc* Antarctic Antarctica Ross Island |
op_source |
Atmospheric Chemistry and Physics, Vol 18, Pp 8571-8587 (2018) |
op_relation |
https://www.atmos-chem-phys.net/18/8571/2018/acp-18-8571-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-8571-2018 1680-7316 1680-7324 https://doaj.org/article/50b8c9df24c64dea8d00fae37dd21e94 |
op_doi |
https://doi.org/10.5194/acp-18-8571-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
12 |
container_start_page |
8571 |
op_container_end_page |
8587 |
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1766258104140300288 |