Oxidized nitrogen chemistry and speciation in the Antarctic troposphere
Understanding the NOy budget at high latitudes is important for our knowledge of present-day clean air chemistry and essential for reliable interpretation of existing ice core nitrate data. However, measurements of NOy components at high latitudes have been limited, and no measurements have attempte...
Published in: | Journal of Geophysical Research: Atmospheres |
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American Geophysical Union
1999
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ftnerc:oai:nora.nerc.ac.uk:503535 2023-05-15T13:48:08+02:00 Oxidized nitrogen chemistry and speciation in the Antarctic troposphere Jones, A. E. Weller, R. Minikin, A. Wolff, E. W. Sturges, W. T. McIntyre, H. P. Leonard, S. R. Schrems, O. Bauguitte, S. 1999 http://nora.nerc.ac.uk/id/eprint/503535/ https://doi.org/10.1029/1999JD900362 unknown American Geophysical Union Jones, A. E. orcid:0000-0002-2040-4841 Weller, R.; Minikin, A.; Wolff, E. W.; Sturges, W. T.; McIntyre, H. P.; Leonard, S. R.; Schrems, O.; Bauguitte, S. 1999 Oxidized nitrogen chemistry and speciation in the Antarctic troposphere. Journal of Geophysical Research, 104 (D17). 21355-21366. https://doi.org/10.1029/1999JD900362 <https://doi.org/10.1029/1999JD900362> Publication - Article PeerReviewed 1999 ftnerc https://doi.org/10.1029/1999JD900362 2023-02-04T19:37:54Z Understanding the NOy budget at high latitudes is important for our knowledge of present-day clean air chemistry and essential for reliable interpretation of existing ice core nitrate data. However, measurements of NOy components at high latitudes have been limited, and no measurements have attempted to address the budget of NOy. Here we report on a campaign conducted in the austral summer of 1997 at the German Antarctic research station, Neumayer, with first Antarctic measurements for NOy in addition to light alkyl nitrates, NO, HNO3 and p−NO3−. Inorganic nitrate has generally been assumed to be the dominant component of NOy in Antarctica, although this idea has not previously been tested. However, our results show that for this coastal station, methyl nitrate was present in much higher concentration than inorganic nitrate (median CH3ONO2 = 38 pptv, HNO3 = 5 pptv). It has been suggested earlier that some alkyl nitrates might have a marine source. If this suggestion is correct, the implication arises that the oceans are an important source of NOy to the Antarctic troposphere and that their role in determining nitrate concentrations in ice must be considered. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Austral Neumayer Journal of Geophysical Research: Atmospheres 104 D17 21355 21366 |
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Natural Environment Research Council: NERC Open Research Archive |
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Understanding the NOy budget at high latitudes is important for our knowledge of present-day clean air chemistry and essential for reliable interpretation of existing ice core nitrate data. However, measurements of NOy components at high latitudes have been limited, and no measurements have attempted to address the budget of NOy. Here we report on a campaign conducted in the austral summer of 1997 at the German Antarctic research station, Neumayer, with first Antarctic measurements for NOy in addition to light alkyl nitrates, NO, HNO3 and p−NO3−. Inorganic nitrate has generally been assumed to be the dominant component of NOy in Antarctica, although this idea has not previously been tested. However, our results show that for this coastal station, methyl nitrate was present in much higher concentration than inorganic nitrate (median CH3ONO2 = 38 pptv, HNO3 = 5 pptv). It has been suggested earlier that some alkyl nitrates might have a marine source. If this suggestion is correct, the implication arises that the oceans are an important source of NOy to the Antarctic troposphere and that their role in determining nitrate concentrations in ice must be considered. |
format |
Article in Journal/Newspaper |
author |
Jones, A. E. Weller, R. Minikin, A. Wolff, E. W. Sturges, W. T. McIntyre, H. P. Leonard, S. R. Schrems, O. Bauguitte, S. |
spellingShingle |
Jones, A. E. Weller, R. Minikin, A. Wolff, E. W. Sturges, W. T. McIntyre, H. P. Leonard, S. R. Schrems, O. Bauguitte, S. Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
author_facet |
Jones, A. E. Weller, R. Minikin, A. Wolff, E. W. Sturges, W. T. McIntyre, H. P. Leonard, S. R. Schrems, O. Bauguitte, S. |
author_sort |
Jones, A. E. |
title |
Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
title_short |
Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
title_full |
Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
title_fullStr |
Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
title_full_unstemmed |
Oxidized nitrogen chemistry and speciation in the Antarctic troposphere |
title_sort |
oxidized nitrogen chemistry and speciation in the antarctic troposphere |
publisher |
American Geophysical Union |
publishDate |
1999 |
url |
http://nora.nerc.ac.uk/id/eprint/503535/ https://doi.org/10.1029/1999JD900362 |
geographic |
Antarctic The Antarctic Austral Neumayer |
geographic_facet |
Antarctic The Antarctic Austral Neumayer |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_relation |
Jones, A. E. orcid:0000-0002-2040-4841 Weller, R.; Minikin, A.; Wolff, E. W.; Sturges, W. T.; McIntyre, H. P.; Leonard, S. R.; Schrems, O.; Bauguitte, S. 1999 Oxidized nitrogen chemistry and speciation in the Antarctic troposphere. Journal of Geophysical Research, 104 (D17). 21355-21366. https://doi.org/10.1029/1999JD900362 <https://doi.org/10.1029/1999JD900362> |
op_doi |
https://doi.org/10.1029/1999JD900362 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
104 |
container_issue |
D17 |
container_start_page |
21355 |
op_container_end_page |
21366 |
_version_ |
1766248690080546816 |