Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland
Concentration measurements of nitric oxide (NO), nitrogen dioxide (NO2), nitrous acid (HONO), nitric acid (HNO3), formaldehyde (HCHO), hydrogen peroxide (H2O2), formic acid (HCOOH) and acetic acid (CH3COOH) were performed in air filtered through the pore spaces of the surface snowpack (firn air) at...
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Language: | English |
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ftcdlib:qt93h406w0 2023-05-15T16:27:59+02:00 Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland Jacobi, HW Bales, RC Honrath, RE Peterson, MC Dibb, JE Swanson, AL Albert, MR 1687 - 1697 2004-04-01 application/pdf http://www.escholarship.org/uc/item/93h406w0 english eng eScholarship, University of California qt93h406w0 http://www.escholarship.org/uc/item/93h406w0 public Jacobi, HW; Bales, RC; Honrath, RE; Peterson, MC; Dibb, JE; Swanson, AL; et al.(2004). Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland. Atmospheric Environment, 38(12), 1687 - 1697. doi:10.1016/j.atmosenv.2004.01.004. UC Merced: Retrieved from: http://www.escholarship.org/uc/item/93h406w0 article 2004 ftcdlib https://doi.org/10.1016/j.atmosenv.2004.01.004 2018-07-13T22:51:58Z Concentration measurements of nitric oxide (NO), nitrogen dioxide (NO2), nitrous acid (HONO), nitric acid (HNO3), formaldehyde (HCHO), hydrogen peroxide (H2O2), formic acid (HCOOH) and acetic acid (CH3COOH) were performed in air filtered through the pore spaces of the surface snowpack (firn air) at Summit, Greenland, in summer 2000. In general, firn air concentrations of NO, NO2, HONO, HCHO, HCOOH, and CH3COOH were enhanced compared to concentrations in the atmospheric boundary layer above the snow. Only HNO3and H2O2normally exhibited lower concentrations in the firn air. In most cases differences were highest during the day and lowest during nighttime hours. Shading experiments showed a good agreement with a photochemical NOxsource in the surface snow. Patterns of H2O2, CH3COOH, and HNO3observed within the surface snow-firn air system imply that the number of molecules in the snow greatly exceeded that in the firn air. Deduced partitioning indicates that the largest fractions of the acids were present at the ice grain-air interface. In all cases, the number of molecules located at the interface was significantly higher than the amount in the firn air. Therefore, snow surface area and surface coverage are important parameters, which must be considered for the interpretation of firn air concentrations. © 2004 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Greenland University of California: eScholarship Greenland Atmospheric Environment 38 12 1687 1697 |
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Open Polar |
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University of California: eScholarship |
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ftcdlib |
language |
English |
description |
Concentration measurements of nitric oxide (NO), nitrogen dioxide (NO2), nitrous acid (HONO), nitric acid (HNO3), formaldehyde (HCHO), hydrogen peroxide (H2O2), formic acid (HCOOH) and acetic acid (CH3COOH) were performed in air filtered through the pore spaces of the surface snowpack (firn air) at Summit, Greenland, in summer 2000. In general, firn air concentrations of NO, NO2, HONO, HCHO, HCOOH, and CH3COOH were enhanced compared to concentrations in the atmospheric boundary layer above the snow. Only HNO3and H2O2normally exhibited lower concentrations in the firn air. In most cases differences were highest during the day and lowest during nighttime hours. Shading experiments showed a good agreement with a photochemical NOxsource in the surface snow. Patterns of H2O2, CH3COOH, and HNO3observed within the surface snow-firn air system imply that the number of molecules in the snow greatly exceeded that in the firn air. Deduced partitioning indicates that the largest fractions of the acids were present at the ice grain-air interface. In all cases, the number of molecules located at the interface was significantly higher than the amount in the firn air. Therefore, snow surface area and surface coverage are important parameters, which must be considered for the interpretation of firn air concentrations. © 2004 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Jacobi, HW Bales, RC Honrath, RE Peterson, MC Dibb, JE Swanson, AL Albert, MR |
spellingShingle |
Jacobi, HW Bales, RC Honrath, RE Peterson, MC Dibb, JE Swanson, AL Albert, MR Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
author_facet |
Jacobi, HW Bales, RC Honrath, RE Peterson, MC Dibb, JE Swanson, AL Albert, MR |
author_sort |
Jacobi, HW |
title |
Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
title_short |
Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
title_full |
Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
title_fullStr |
Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
title_full_unstemmed |
Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland |
title_sort |
reactive trace gases measured in the interstitial air of surface snow at summit, greenland |
publisher |
eScholarship, University of California |
publishDate |
2004 |
url |
http://www.escholarship.org/uc/item/93h406w0 |
op_coverage |
1687 - 1697 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Jacobi, HW; Bales, RC; Honrath, RE; Peterson, MC; Dibb, JE; Swanson, AL; et al.(2004). Reactive trace gases measured in the interstitial air of surface snow at Summit, Greenland. Atmospheric Environment, 38(12), 1687 - 1697. doi:10.1016/j.atmosenv.2004.01.004. UC Merced: Retrieved from: http://www.escholarship.org/uc/item/93h406w0 |
op_relation |
qt93h406w0 http://www.escholarship.org/uc/item/93h406w0 |
op_rights |
public |
op_doi |
https://doi.org/10.1016/j.atmosenv.2004.01.004 |
container_title |
Atmospheric Environment |
container_volume |
38 |
container_issue |
12 |
container_start_page |
1687 |
op_container_end_page |
1697 |
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1766017593534054400 |