An overview of snow photochemistry: evidence, mechanisms and impacts
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated species may significantly impact the chemistry o...
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ftcaltechauth:oai:authors.library.caltech.edu:8960 2023-05-15T18:23:00+02:00 An overview of snow photochemistry: evidence, mechanisms and impacts Grannas, A. M. Jones, A. E. Dibb, J. Ammann, M. Anastasio, C. Beine, H. J. Bergin, M. Bottenheim, J. Boxe, C. S. Carver, G. Chen, G. Crawford, J. H. Dominé, F. Frey, M. M. Guzmán, M. I. Heard, D. E. Helmig, D. Hoffmann, M. R. Honrath, R. E. Huey, L. G. Hutterli, M. Jacobi, H. W. Klán, P. Lefer, B. McConnell, J. Plane, J. Sander, R. Savarino, J. Shepson, P. B. Simpson, W. R. Sodeau, J. R. von Glasow, R. Weller, R. Wolff, E. W. Zhu, T. 2007-03-29 application/pdf https://authors.library.caltech.edu/8960/ https://authors.library.caltech.edu/8960/1/GRAacpd07.pdf https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07 unknown European Geosciences Union https://authors.library.caltech.edu/8960/1/GRAacpd07.pdf Grannas, A. M. and Jones, A. E. and Dibb, J. and Ammann, M. and Anastasio, C. and Beine, H. J. and Bergin, M. and Bottenheim, J. and Boxe, C. S. and Carver, G. and Chen, G. and Crawford, J. H. and Dominé, F. and Frey, M. M. and Guzmán, M. I. and Heard, D. E. and Helmig, D. and Hoffmann, M. R. and Honrath, R. E. and Huey, L. G. and Hutterli, M. and Jacobi, H. W. and Klán, P. and Lefer, B. and McConnell, J. and Plane, J. and Sander, R. and Savarino, J. and Shepson, P. B. and Simpson, W. R. and Sodeau, J. R. and von Glasow, R. and Weller, R. and Wolff, E. W. and Zhu, T. (2007) An overview of snow photochemistry: evidence, mechanisms and impacts. Atmospheric Chemistry and Physics Discussions, 7 (2). pp. 4165-4283. ISSN 1680-7367. https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07 <https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07> Caltech Library Services Article NonPeerReviewed 2007 ftcaltechauth 2020-04-26T15:59:50Z It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated species may significantly impact the chemistry of the overlying atmosphere. Nitrogen oxide and oxidant precursor fluxes have been measured in a number of snow covered environments, where in some cases the emissions significantly impact the overlying boundary layer. For example, photochemical ozone production (such as that occurring in polluted mid-latitudes) of 3–4 ppbv/day has been observed at South Pole, due to high OH and NO levels present in a relatively shallow boundary layer. Field and laboratory experiments have determined that the origin of the observed NOx flux is the photochemistry of nitrate within the snowpack, however some details of the mechanism have not yet been elucidated. A variety of low molecular weight organic compounds have been shown to be emitted from sunlit snowpacks, the source of which has been proposed to be either direct or indirect photo-oxidation of natural organic materials present in the snow. Although myriad studies have observed active processing of species within irradiated snowpacks, the fundamental chemistry occurring remains poorly understood. Here we consider the nature of snow at a fundamental, physical level; photochemical processes within snow and the caveats needed for comparison to atmospheric photochemistry; our current understanding of nitrogen, oxidant, halogen and organic photochemistry within snow; the current limitations faced by the field and implications for the future. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole |
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Caltech Library Services Grannas, A. M. Jones, A. E. Dibb, J. Ammann, M. Anastasio, C. Beine, H. J. Bergin, M. Bottenheim, J. Boxe, C. S. Carver, G. Chen, G. Crawford, J. H. Dominé, F. Frey, M. M. Guzmán, M. I. Heard, D. E. Helmig, D. Hoffmann, M. R. Honrath, R. E. Huey, L. G. Hutterli, M. Jacobi, H. W. Klán, P. Lefer, B. McConnell, J. Plane, J. Sander, R. Savarino, J. Shepson, P. B. Simpson, W. R. Sodeau, J. R. von Glasow, R. Weller, R. Wolff, E. W. Zhu, T. An overview of snow photochemistry: evidence, mechanisms and impacts |
topic_facet |
Caltech Library Services |
description |
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated species may significantly impact the chemistry of the overlying atmosphere. Nitrogen oxide and oxidant precursor fluxes have been measured in a number of snow covered environments, where in some cases the emissions significantly impact the overlying boundary layer. For example, photochemical ozone production (such as that occurring in polluted mid-latitudes) of 3–4 ppbv/day has been observed at South Pole, due to high OH and NO levels present in a relatively shallow boundary layer. Field and laboratory experiments have determined that the origin of the observed NOx flux is the photochemistry of nitrate within the snowpack, however some details of the mechanism have not yet been elucidated. A variety of low molecular weight organic compounds have been shown to be emitted from sunlit snowpacks, the source of which has been proposed to be either direct or indirect photo-oxidation of natural organic materials present in the snow. Although myriad studies have observed active processing of species within irradiated snowpacks, the fundamental chemistry occurring remains poorly understood. Here we consider the nature of snow at a fundamental, physical level; photochemical processes within snow and the caveats needed for comparison to atmospheric photochemistry; our current understanding of nitrogen, oxidant, halogen and organic photochemistry within snow; the current limitations faced by the field and implications for the future. |
format |
Article in Journal/Newspaper |
author |
Grannas, A. M. Jones, A. E. Dibb, J. Ammann, M. Anastasio, C. Beine, H. J. Bergin, M. Bottenheim, J. Boxe, C. S. Carver, G. Chen, G. Crawford, J. H. Dominé, F. Frey, M. M. Guzmán, M. I. Heard, D. E. Helmig, D. Hoffmann, M. R. Honrath, R. E. Huey, L. G. Hutterli, M. Jacobi, H. W. Klán, P. Lefer, B. McConnell, J. Plane, J. Sander, R. Savarino, J. Shepson, P. B. Simpson, W. R. Sodeau, J. R. von Glasow, R. Weller, R. Wolff, E. W. Zhu, T. |
author_facet |
Grannas, A. M. Jones, A. E. Dibb, J. Ammann, M. Anastasio, C. Beine, H. J. Bergin, M. Bottenheim, J. Boxe, C. S. Carver, G. Chen, G. Crawford, J. H. Dominé, F. Frey, M. M. Guzmán, M. I. Heard, D. E. Helmig, D. Hoffmann, M. R. Honrath, R. E. Huey, L. G. Hutterli, M. Jacobi, H. W. Klán, P. Lefer, B. McConnell, J. Plane, J. Sander, R. Savarino, J. Shepson, P. B. Simpson, W. R. Sodeau, J. R. von Glasow, R. Weller, R. Wolff, E. W. Zhu, T. |
author_sort |
Grannas, A. M. |
title |
An overview of snow photochemistry: evidence, mechanisms and impacts |
title_short |
An overview of snow photochemistry: evidence, mechanisms and impacts |
title_full |
An overview of snow photochemistry: evidence, mechanisms and impacts |
title_fullStr |
An overview of snow photochemistry: evidence, mechanisms and impacts |
title_full_unstemmed |
An overview of snow photochemistry: evidence, mechanisms and impacts |
title_sort |
overview of snow photochemistry: evidence, mechanisms and impacts |
publisher |
European Geosciences Union |
publishDate |
2007 |
url |
https://authors.library.caltech.edu/8960/ https://authors.library.caltech.edu/8960/1/GRAacpd07.pdf https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://authors.library.caltech.edu/8960/1/GRAacpd07.pdf Grannas, A. M. and Jones, A. E. and Dibb, J. and Ammann, M. and Anastasio, C. and Beine, H. J. and Bergin, M. and Bottenheim, J. and Boxe, C. S. and Carver, G. and Chen, G. and Crawford, J. H. and Dominé, F. and Frey, M. M. and Guzmán, M. I. and Heard, D. E. and Helmig, D. and Hoffmann, M. R. and Honrath, R. E. and Huey, L. G. and Hutterli, M. and Jacobi, H. W. and Klán, P. and Lefer, B. and McConnell, J. and Plane, J. and Sander, R. and Savarino, J. and Shepson, P. B. and Simpson, W. R. and Sodeau, J. R. and von Glasow, R. and Weller, R. and Wolff, E. W. and Zhu, T. (2007) An overview of snow photochemistry: evidence, mechanisms and impacts. Atmospheric Chemistry and Physics Discussions, 7 (2). pp. 4165-4283. ISSN 1680-7367. https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07 <https://resolver.caltech.edu/CaltechAUTHORS:GRAacpd07> |
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