Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-)
Atmospheric chemistry directly above snowpacks is strongly influenced by ultraviolet (UV) radiation initiated emissions of chemicals from the snowpack. The emission of gases from the snowpack to the atmosphere is in part due to chemical reactions between hydroxyl radical, OH (produced from photolysi...
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ftholloway:oai:repository.royalholloway.ac.uk:35efaa20-2b51-1404-5a20-003dc0336f58/1 2023-05-15T16:29:47+02:00 Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) France, JL King, Martin Lee-Taylor, J 2007-1-1 application/pdf https://repository.royalholloway.ac.uk/items/35efaa20-2b51-1404-5a20-003dc0336f58/1/ eng eng file://localhost/Users/martin/Documents/Papers/2007/France/ATMOSPHERIC%20ENVIRONMENT%202007%20France-1.pdf https://repository.royalholloway.ac.uk/items/35efaa20-2b51-1404-5a20-003dc0336f58/1/ Atmospheric Environment, 41 (26) No3 Formaldehyde Nitrate Chemistry Interstitial Air South-Pole Greenland Troposphere Summit Snow Ice H2O2 Alert 2000 Hno3 Boundary-Layer Hydroxyl Ozone Radical Hydrogen Peroxide Faculty of Science\Earth Sciences Research Groups and Centres\Earth Sciences\Ancient and Modern Earth Systems Research Groups and Centres\Earth Sciences\Geochemistry info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion 2007 ftholloway 2022-09-26T13:01:37Z Atmospheric chemistry directly above snowpacks is strongly influenced by ultraviolet (UV) radiation initiated emissions of chemicals from the snowpack. The emission of gases from the snowpack to the atmosphere is in part due to chemical reactions between hydroxyl radical, OH (produced from photolysis of hydrogen peroxide (H2O2) or nitrate (NO3-) and impurities in the snowpack. The work presented here is a radiative-transfer modelling study to calculate the depth-integrated production rates of hydroxyl radical from the photolysis of hydrogen peroxide and nitrate anion in snow for four different snowpacks and for solar zenith angles 30 degrees-90 degrees. This work also demonstrates the importance of hydrogen peroxide photolysis to produce hydroxyl radical relative to nitrate photolysis with (a) different snowpacks, (b) different ozone column depths, and (c) snowpack depths. The importance of hydrogen peroxide photolysis over nitrate photolysis for hydroxyl radical production increases with increasing depth in snowpack, column ozone depth, and solar zenith angle. With a solar zenith angle of 60 degrees the production of hydroxyl radical from hydrogen peroxide photolysis accounts for 91-99% of all hydroxyl radical production from hydrogen peroxide and nitrate photolysis. (C) 2007 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Greenland South pole Royal Holloway University of London: Royal Holloway Digital Repository Greenland South Pole |
institution |
Open Polar |
collection |
Royal Holloway University of London: Royal Holloway Digital Repository |
op_collection_id |
ftholloway |
language |
English |
topic |
No3 Formaldehyde Nitrate Chemistry Interstitial Air South-Pole Greenland Troposphere Summit Snow Ice H2O2 Alert 2000 Hno3 Boundary-Layer Hydroxyl Ozone Radical Hydrogen Peroxide Faculty of Science\Earth Sciences Research Groups and Centres\Earth Sciences\Ancient and Modern Earth Systems Research Groups and Centres\Earth Sciences\Geochemistry |
spellingShingle |
No3 Formaldehyde Nitrate Chemistry Interstitial Air South-Pole Greenland Troposphere Summit Snow Ice H2O2 Alert 2000 Hno3 Boundary-Layer Hydroxyl Ozone Radical Hydrogen Peroxide Faculty of Science\Earth Sciences Research Groups and Centres\Earth Sciences\Ancient and Modern Earth Systems Research Groups and Centres\Earth Sciences\Geochemistry France, JL King, Martin Lee-Taylor, J Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
topic_facet |
No3 Formaldehyde Nitrate Chemistry Interstitial Air South-Pole Greenland Troposphere Summit Snow Ice H2O2 Alert 2000 Hno3 Boundary-Layer Hydroxyl Ozone Radical Hydrogen Peroxide Faculty of Science\Earth Sciences Research Groups and Centres\Earth Sciences\Ancient and Modern Earth Systems Research Groups and Centres\Earth Sciences\Geochemistry |
description |
Atmospheric chemistry directly above snowpacks is strongly influenced by ultraviolet (UV) radiation initiated emissions of chemicals from the snowpack. The emission of gases from the snowpack to the atmosphere is in part due to chemical reactions between hydroxyl radical, OH (produced from photolysis of hydrogen peroxide (H2O2) or nitrate (NO3-) and impurities in the snowpack. The work presented here is a radiative-transfer modelling study to calculate the depth-integrated production rates of hydroxyl radical from the photolysis of hydrogen peroxide and nitrate anion in snow for four different snowpacks and for solar zenith angles 30 degrees-90 degrees. This work also demonstrates the importance of hydrogen peroxide photolysis to produce hydroxyl radical relative to nitrate photolysis with (a) different snowpacks, (b) different ozone column depths, and (c) snowpack depths. The importance of hydrogen peroxide photolysis over nitrate photolysis for hydroxyl radical production increases with increasing depth in snowpack, column ozone depth, and solar zenith angle. With a solar zenith angle of 60 degrees the production of hydroxyl radical from hydrogen peroxide photolysis accounts for 91-99% of all hydroxyl radical production from hydrogen peroxide and nitrate photolysis. (C) 2007 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
France, JL King, Martin Lee-Taylor, J |
author_facet |
France, JL King, Martin Lee-Taylor, J |
author_sort |
France, JL |
title |
Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
title_short |
Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
title_full |
Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
title_fullStr |
Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
title_full_unstemmed |
Hydroxyl (OH) radical production rates in snowpacks from photolysis of hydrogen peroxide (H2O2) and nitrate (NO3-) |
title_sort |
hydroxyl (oh) radical production rates in snowpacks from photolysis of hydrogen peroxide (h2o2) and nitrate (no3-) |
publishDate |
2007 |
url |
https://repository.royalholloway.ac.uk/items/35efaa20-2b51-1404-5a20-003dc0336f58/1/ |
geographic |
Greenland South Pole |
geographic_facet |
Greenland South Pole |
genre |
Greenland South pole |
genre_facet |
Greenland South pole |
op_source |
Atmospheric Environment, 41 (26) |
op_relation |
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_version_ |
1766019484570615808 |