Photochemical Impact on Ozone Fluxes in Coastal Waters
Ozone fluxes, derived from gradient measurements in Northeast Atlantic coastal waters, were observed to depend on both tide height and solar radiation. Peak ozone fluxes of −0.26±0.04 μg m-2 s-1 occurred during low-tide conditions when exposed microalgae fields contributed to the flux footprint. Ad...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2012/943785 |
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| author | L. Coleman P. McVeigh H. Berresheim M. Martino C. D. O'Dowd |
| author_facet | L. Coleman P. McVeigh H. Berresheim M. Martino C. D. O'Dowd |
| author_sort | L. Coleman |
| collection | DOAJ |
| description | Ozone fluxes, derived from gradient measurements in Northeast Atlantic coastal waters, were observed to depend on both tide height and solar radiation. Peak ozone fluxes of −0.26±0.04 μg m-2 s-1 occurred during low-tide conditions when exposed microalgae fields contributed to the flux footprint. Additionally, at mid-to-high tide, when water surfaces contribute predominantly to the flux footprint, fluxes of the order of −0.12±0.03 μg m-2 s-1 were observed. Considering only fluxes over water covered surfaces, and using an advanced ozone deposition model that accounts for surface-water chemistry enhancing the deposition sink, it is demonstrated that a photochemical enhancement reaction with dissolved organic carbon (DOC) is required to explain the enhanced ozone deposition during daylight hours. This sink amounts to an ozone loss rate of up to 0.6 ppb per hour under peak solar irradiance and points to a missing sink in the marine boundary layer ozone budget. |
| format | Article |
| id | doaj-art-eb378ee466e64710b1fbc64e33f0cfec |
| institution | DOAJ |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-eb378ee466e64710b1fbc64e33f0cfec2025-08-20T03:21:18ZengWileyAdvances in Meteorology1687-93091687-93172012-01-01201210.1155/2012/943785943785Photochemical Impact on Ozone Fluxes in Coastal WatersL. Coleman0P. McVeigh1H. Berresheim2M. Martino3C. D. O'Dowd4School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, IrelandSchool of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, IrelandSchool of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, IrelandLaboratory for Global Marine and Atmospheric Chemistry, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UKSchool of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, IrelandOzone fluxes, derived from gradient measurements in Northeast Atlantic coastal waters, were observed to depend on both tide height and solar radiation. Peak ozone fluxes of −0.26±0.04 μg m-2 s-1 occurred during low-tide conditions when exposed microalgae fields contributed to the flux footprint. Additionally, at mid-to-high tide, when water surfaces contribute predominantly to the flux footprint, fluxes of the order of −0.12±0.03 μg m-2 s-1 were observed. Considering only fluxes over water covered surfaces, and using an advanced ozone deposition model that accounts for surface-water chemistry enhancing the deposition sink, it is demonstrated that a photochemical enhancement reaction with dissolved organic carbon (DOC) is required to explain the enhanced ozone deposition during daylight hours. This sink amounts to an ozone loss rate of up to 0.6 ppb per hour under peak solar irradiance and points to a missing sink in the marine boundary layer ozone budget.http://dx.doi.org/10.1155/2012/943785 |
| spellingShingle | L. Coleman P. McVeigh H. Berresheim M. Martino C. D. O'Dowd Photochemical Impact on Ozone Fluxes in Coastal Waters Advances in Meteorology |
| title | Photochemical Impact on Ozone Fluxes in Coastal Waters |
| title_full | Photochemical Impact on Ozone Fluxes in Coastal Waters |
| title_fullStr | Photochemical Impact on Ozone Fluxes in Coastal Waters |
| title_full_unstemmed | Photochemical Impact on Ozone Fluxes in Coastal Waters |
| title_short | Photochemical Impact on Ozone Fluxes in Coastal Waters |
| title_sort | photochemical impact on ozone fluxes in coastal waters |
| url | http://dx.doi.org/10.1155/2012/943785 |
| work_keys_str_mv | AT lcoleman photochemicalimpactonozonefluxesincoastalwaters AT pmcveigh photochemicalimpactonozonefluxesincoastalwaters AT hberresheim photochemicalimpactonozonefluxesincoastalwaters AT mmartino photochemicalimpactonozonefluxesincoastalwaters AT cdodowd photochemicalimpactonozonefluxesincoastalwaters |