Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI)
The vertical distribution of nitric oxide (NO) was investigated by profiling from a tethered balloon platform during the 2003 Antarctic Tropospheric Chemistry Investigation (ANTCI) at South Pole (SP), Antarctica. The lower atmosphere was probed between the surface and 120 m height by pulling air fro...
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ftncar:oai:drupal-site.org:articles_6297 2023-05-15T13:49:42+02:00 Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) Helmig, Detlev (Detlev Helmig) (authoraut) Johnson, Bryan (Bryan J. Johnson) (authoraut) Warshawsky, Matt (Matt Warshawsky) (authoraut) Morse, Thomas (Thomas Morse) (authoraut) Neff, William (William D. Neff) (authoraut) Eisele, Fred (Fred Eisele) (authoraut) Davis, Douglas (Douglas D. Davis) (authoraut) https://doi.org/10.1016/j.atmosenv.2007.03.061 http://n2t.net/ark:/85065/d7rv0nw3 en eng Elsevier Ltd. Atmospheric Environment http://dx.doi.org/10.1016/j.atmosenv.2007.03.061 articles:6297 uri: http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-533 doi:10.1016/j.atmosenv.2007.03.061 ark:/85065/d7rv0nw3 http://n2t.net/ark:/85065/d7rv0nw3 An edited version of this article was published by Elsevier. Copyright 2008 Elsevier. Antarctic plateau snowpack-atmosphere gas exchange snow photochemistry tethered balloon profiling nitric oxide ozone Text article ftncar https://doi.org/10.1016/j.atmosenv.2007.03.061 2022-08-09T17:42:02Z The vertical distribution of nitric oxide (NO) was investigated by profiling from a tethered balloon platform during the 2003 Antarctic Tropospheric Chemistry Investigation (ANTCI) at South Pole (SP), Antarctica. The lower atmosphere was probed between the surface and 120 m height by pulling air from an inlet attached to the balloon through a thin-wall, 135 m-long Teflon sampling line and by analyzing NO in this airflow with a ground-borne monitor. Losses and conversion of NO during the 2-4-min residence time in the sampling line were on average on the order of 6-16%, providing a feasible approach for the measurement of vertical NO profiles under SP conditions. NO was found to be highly variable within the lowest 100 m of the atmosphere. Greatly enhanced NO mixing ratios were constrained to a shallow (20-50 m height) air layer nearest to the surface, above which NO rapidly dropped to its mixed boundary layer background levels. Concurrent measurements of ozone and meteorological conditions provide insight into linkages between the ongoing snowpack and boundary layer nitrogen oxides (NOx=NO+NO₂) and ozone chemistry. Since [OH] and [HO₂] are non-linearly coupled to absolute levels of NOx, their concentrations and the rate of ozone production are expected to similarly show appreciable changes on small vertical scales during conditions with enhanced [NOx]. Article in Journal/Newspaper Antarc* Antarctic Antarctica South pole South pole OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic South Pole Atmospheric Environment 42 12 2817 2830 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Antarctic plateau snowpack-atmosphere gas exchange snow photochemistry tethered balloon profiling nitric oxide ozone |
spellingShingle |
Antarctic plateau snowpack-atmosphere gas exchange snow photochemistry tethered balloon profiling nitric oxide ozone Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
topic_facet |
Antarctic plateau snowpack-atmosphere gas exchange snow photochemistry tethered balloon profiling nitric oxide ozone |
description |
The vertical distribution of nitric oxide (NO) was investigated by profiling from a tethered balloon platform during the 2003 Antarctic Tropospheric Chemistry Investigation (ANTCI) at South Pole (SP), Antarctica. The lower atmosphere was probed between the surface and 120 m height by pulling air from an inlet attached to the balloon through a thin-wall, 135 m-long Teflon sampling line and by analyzing NO in this airflow with a ground-borne monitor. Losses and conversion of NO during the 2-4-min residence time in the sampling line were on average on the order of 6-16%, providing a feasible approach for the measurement of vertical NO profiles under SP conditions. NO was found to be highly variable within the lowest 100 m of the atmosphere. Greatly enhanced NO mixing ratios were constrained to a shallow (20-50 m height) air layer nearest to the surface, above which NO rapidly dropped to its mixed boundary layer background levels. Concurrent measurements of ozone and meteorological conditions provide insight into linkages between the ongoing snowpack and boundary layer nitrogen oxides (NOx=NO+NO₂) and ozone chemistry. Since [OH] and [HO₂] are non-linearly coupled to absolute levels of NOx, their concentrations and the rate of ozone production are expected to similarly show appreciable changes on small vertical scales during conditions with enhanced [NOx]. |
author2 |
Helmig, Detlev (Detlev Helmig) (authoraut) Johnson, Bryan (Bryan J. Johnson) (authoraut) Warshawsky, Matt (Matt Warshawsky) (authoraut) Morse, Thomas (Thomas Morse) (authoraut) Neff, William (William D. Neff) (authoraut) Eisele, Fred (Fred Eisele) (authoraut) Davis, Douglas (Douglas D. Davis) (authoraut) |
format |
Article in Journal/Newspaper |
title |
Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
title_short |
Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
title_full |
Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
title_fullStr |
Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
title_full_unstemmed |
Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI) |
title_sort |
nitric oxide in the boundary-layer at south pole during the antarctic tropospheric chemistry investigation (antci) |
publisher |
Elsevier Ltd. |
url |
https://doi.org/10.1016/j.atmosenv.2007.03.061 http://n2t.net/ark:/85065/d7rv0nw3 |
geographic |
Antarctic The Antarctic South Pole |
geographic_facet |
Antarctic The Antarctic South Pole |
genre |
Antarc* Antarctic Antarctica South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica South pole South pole |
op_relation |
Atmospheric Environment http://dx.doi.org/10.1016/j.atmosenv.2007.03.061 articles:6297 uri: http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-533 doi:10.1016/j.atmosenv.2007.03.061 ark:/85065/d7rv0nw3 http://n2t.net/ark:/85065/d7rv0nw3 |
op_rights |
An edited version of this article was published by Elsevier. Copyright 2008 Elsevier. |
op_doi |
https://doi.org/10.1016/j.atmosenv.2007.03.061 |
container_title |
Atmospheric Environment |
container_volume |
42 |
container_issue |
12 |
container_start_page |
2817 |
op_container_end_page |
2830 |
_version_ |
1766251986010767360 |