A seasonal comparison of ozone photochemistry in the remote marine boundary layer
During the Austral winter of 1995, a series of measurements were made as part of the Southern Ocean Atmospheric Photochemistry Experiment-1 (SOAPEX-1) campaign at the Cape Grim Baseline Air Pollution station (41°S) on the northwestern tip of Tasmania, Australia. The measurements were complimentary t...
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ftumanchesterpub:oai:pure.atira.dk:publications/78c2f289-8244-4cf6-8c90-248f5c535490 2023-11-12T04:26:41+01:00 A seasonal comparison of ozone photochemistry in the remote marine boundary layer Monks, P S Salisbury, Gavin Holland, Greg Penkett, S. A. Ayers, G.P. 2000 https://research.manchester.ac.uk/en/publications/78c2f289-8244-4cf6-8c90-248f5c535490 https://doi.org/10.1016/S1352-2310(99)00504-X eng eng info:eu-repo/semantics/openAccess Monks , P S , Salisbury , G , Holland , G , Penkett , S A & Ayers , G P 2000 , ' A seasonal comparison of ozone photochemistry in the remote marine boundary layer ' , Atmospheric Environment , vol. 34 , no. 16 , pp. 2547 . https://doi.org/10.1016/S1352-2310(99)00504-X Peroxy radicals; Troposphere; Ozone budget; Photolysis article 2000 ftumanchesterpub https://doi.org/10.1016/S1352-2310(99)00504-X 2023-10-30T09:19:06Z During the Austral winter of 1995, a series of measurements were made as part of the Southern Ocean Atmospheric Photochemistry Experiment-1 (SOAPEX-1) campaign at the Cape Grim Baseline Air Pollution station (41°S) on the northwestern tip of Tasmania, Australia. The measurements were complimentary to similar ones made in the Austral summer during January–February 1995 and both sets of data are used to make a comparison of photochemistry in the remote marine boundary layer in summer and winter. Seasonal measurements of peroxy radicals are compared to both a steady-state analysis and a full model in order to elucidate their relationships to measured O3, Full-size image (<1 K) and H2O. Calculations of the seasonal concentrations and relationships of OH are consistent with both model and measurements. From a detailed analysis of the ozone budgets accounting for the contributions of photochemistry, deposition and entrainment processes, it is clear that on a seasonal basis there are two major controlling factors working in opposition. The net effect of photochemistry in the remote marine boundary layer is to destroy ozone; this is balanced by entrainment of ozone into the marine boundary layer from the lower free troposphere. Using the measured data, photochemistry represents the dominant loss process for ozone on a seasonal basis varying from 1.2 ppbv d−1 in summer (87% of the ozone loss) to 0.6 ppbv d−1 in the winter (64% of the ozone loss). It is clear that the level of photochemistry taking place in the marine boundary layer determines the lower bound for ozone levels. Article in Journal/Newspaper Southern Ocean The University of Manchester: Research Explorer Austral Grim ENVELOPE(-64.486,-64.486,-65.379,-65.379) Southern Ocean Atmospheric Environment 34 16 2547 2561 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
topic |
Peroxy radicals; Troposphere; Ozone budget; Photolysis |
spellingShingle |
Peroxy radicals; Troposphere; Ozone budget; Photolysis Monks, P S Salisbury, Gavin Holland, Greg Penkett, S. A. Ayers, G.P. A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
topic_facet |
Peroxy radicals; Troposphere; Ozone budget; Photolysis |
description |
During the Austral winter of 1995, a series of measurements were made as part of the Southern Ocean Atmospheric Photochemistry Experiment-1 (SOAPEX-1) campaign at the Cape Grim Baseline Air Pollution station (41°S) on the northwestern tip of Tasmania, Australia. The measurements were complimentary to similar ones made in the Austral summer during January–February 1995 and both sets of data are used to make a comparison of photochemistry in the remote marine boundary layer in summer and winter. Seasonal measurements of peroxy radicals are compared to both a steady-state analysis and a full model in order to elucidate their relationships to measured O3, Full-size image (<1 K) and H2O. Calculations of the seasonal concentrations and relationships of OH are consistent with both model and measurements. From a detailed analysis of the ozone budgets accounting for the contributions of photochemistry, deposition and entrainment processes, it is clear that on a seasonal basis there are two major controlling factors working in opposition. The net effect of photochemistry in the remote marine boundary layer is to destroy ozone; this is balanced by entrainment of ozone into the marine boundary layer from the lower free troposphere. Using the measured data, photochemistry represents the dominant loss process for ozone on a seasonal basis varying from 1.2 ppbv d−1 in summer (87% of the ozone loss) to 0.6 ppbv d−1 in the winter (64% of the ozone loss). It is clear that the level of photochemistry taking place in the marine boundary layer determines the lower bound for ozone levels. |
format |
Article in Journal/Newspaper |
author |
Monks, P S Salisbury, Gavin Holland, Greg Penkett, S. A. Ayers, G.P. |
author_facet |
Monks, P S Salisbury, Gavin Holland, Greg Penkett, S. A. Ayers, G.P. |
author_sort |
Monks, P S |
title |
A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
title_short |
A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
title_full |
A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
title_fullStr |
A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
title_full_unstemmed |
A seasonal comparison of ozone photochemistry in the remote marine boundary layer |
title_sort |
seasonal comparison of ozone photochemistry in the remote marine boundary layer |
publishDate |
2000 |
url |
https://research.manchester.ac.uk/en/publications/78c2f289-8244-4cf6-8c90-248f5c535490 https://doi.org/10.1016/S1352-2310(99)00504-X |
long_lat |
ENVELOPE(-64.486,-64.486,-65.379,-65.379) |
geographic |
Austral Grim Southern Ocean |
geographic_facet |
Austral Grim Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Monks , P S , Salisbury , G , Holland , G , Penkett , S A & Ayers , G P 2000 , ' A seasonal comparison of ozone photochemistry in the remote marine boundary layer ' , Atmospheric Environment , vol. 34 , no. 16 , pp. 2547 . https://doi.org/10.1016/S1352-2310(99)00504-X |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/S1352-2310(99)00504-X |
container_title |
Atmospheric Environment |
container_volume |
34 |
container_issue |
16 |
container_start_page |
2547 |
op_container_end_page |
2561 |
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1782340578210480128 |