Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ...
Formaldehyde (HCHO) measurements in snow, firn, atmosphere, and air in the open pore space of the firn (firn air) at Summit, Greenland, in June 1996 show that the top snow layers are a HCHO source. HCHO concentrations in fresh snow are higher than those in equilibrium with atmospheric concentrations...
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1999
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Online Access: | https://dx.doi.org/10.48350/158792 https://boris-portal.unibe.ch/handle/20.500.12422/43397 |
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ftdatacite:10.48350/158792 2024-10-13T14:07:40+00:00 Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... Hutterli, Manuel Röthlisberger, Regine Bales, Roger C. 1999 https://dx.doi.org/10.48350/158792 https://boris-portal.unibe.ch/handle/20.500.12422/43397 en eng University of Bern Text JournalArticle ScholarlyArticle article-journal 1999 ftdatacite https://doi.org/10.48350/158792 2024-10-01T11:43:06Z Formaldehyde (HCHO) measurements in snow, firn, atmosphere, and air in the open pore space of the firn (firn air) at Summit, Greenland, in June 1996 show that the top snow layers are a HCHO source. HCHO concentrations in fresh snow are higher than those in equilibrium with atmospheric concentrations, resulting in HCHO degassing in the days to weeks following snowfall. Maximum HCHO concentrations in firn air were 1.5–2.2 ppbv, while the mean atmospheric HCHO concentration 1 m above the surface was 0.23 ppbv. Apparent HCHO fluxes out of the snow are a plausible explanation for the discrepancy between the 0.1 ppbv atmospheric concentration predicted by photochemical modeling and the measurements. HCHO in deeper firn is near equilibrium with the lower tropospheric HCHO concentration at the annual average temperature. Thus HCHO in ice may in fact be linearly related to multi-year average atmospheric concentrations through a temperature dependent partition coefficient. ... Article in Journal/Newspaper Greenland DataCite Greenland |
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ftdatacite |
language |
English |
description |
Formaldehyde (HCHO) measurements in snow, firn, atmosphere, and air in the open pore space of the firn (firn air) at Summit, Greenland, in June 1996 show that the top snow layers are a HCHO source. HCHO concentrations in fresh snow are higher than those in equilibrium with atmospheric concentrations, resulting in HCHO degassing in the days to weeks following snowfall. Maximum HCHO concentrations in firn air were 1.5–2.2 ppbv, while the mean atmospheric HCHO concentration 1 m above the surface was 0.23 ppbv. Apparent HCHO fluxes out of the snow are a plausible explanation for the discrepancy between the 0.1 ppbv atmospheric concentration predicted by photochemical modeling and the measurements. HCHO in deeper firn is near equilibrium with the lower tropospheric HCHO concentration at the annual average temperature. Thus HCHO in ice may in fact be linearly related to multi-year average atmospheric concentrations through a temperature dependent partition coefficient. ... |
format |
Article in Journal/Newspaper |
author |
Hutterli, Manuel Röthlisberger, Regine Bales, Roger C. |
spellingShingle |
Hutterli, Manuel Röthlisberger, Regine Bales, Roger C. Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
author_facet |
Hutterli, Manuel Röthlisberger, Regine Bales, Roger C. |
author_sort |
Hutterli, Manuel |
title |
Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
title_short |
Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
title_full |
Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
title_fullStr |
Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
title_full_unstemmed |
Atmosphere-to-snow-to-firn transfer studies of HCHO at Summit, Greenland ... |
title_sort |
atmosphere-to-snow-to-firn transfer studies of hcho at summit, greenland ... |
publisher |
University of Bern |
publishDate |
1999 |
url |
https://dx.doi.org/10.48350/158792 https://boris-portal.unibe.ch/handle/20.500.12422/43397 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_doi |
https://doi.org/10.48350/158792 |
_version_ |
1812814166117842944 |