Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide
Volatile halogenated organic compounds containing bromine and iodine, which are naturally produced in the ocean, are involved in ozone depletion in both the troposphere and stratosphere. Three prominent compounds transporting large amounts of marine halogens into the atmosphere are bromoform (CHBr3)...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | https://doi.org/10.5194/acp-13-8915-2013 https://research.chalmers.se/en/publication/185316 |
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ftchalmersuniv:oai:research.chalmers.se:185316 2023-05-15T13:35:46+02:00 Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide Ziska, F. Quack, B. Abrahamsson, Katarina Archer, S. D. Atlas, E. Bell, T. A. Butler, J. H. Carpenter, L. J. Jones, C. E. Harris, N. R. P. Hepach, H. Heumann, K. G. Hughes, C. Kuss, J. Krüger, K. Liss, P. Moore, R. M. Orlikowska, A. Raimund, S Reeves, C.E. Reifenhäuser, W. Robinson, A. D. Schall, C. Tanhua, T. Tegtmeier, S. Turner, S. Wang, L. Wallace, D. Williams, J. Yamamoto, H. Yvon-Lewis, S. Yokouchi, Y. 2013 text https://doi.org/10.5194/acp-13-8915-2013 https://research.chalmers.se/en/publication/185316 unknown http://dx.doi.org/10.5194/acp-13-8915-2013 https://research.chalmers.se/en/publication/185316 Meteorology and Atmospheric Sciences MARINE BOUNDARY-LAYER HALOGENATED ORGANIC-COMPOUNDS PHOTOCHEMICAL PRODUCTION PHYTOPLANKTON CULTURES STRATOSPHERIC BROMINE TROPICAL TROPOPAUSE LAYER GAS-EXCHANGE WIND-SPEED ATLANTIC-OCEAN OZONE DEPLETION 2013 ftchalmersuniv https://doi.org/10.5194/acp-13-8915-2013 2022-12-11T07:13:52Z Volatile halogenated organic compounds containing bromine and iodine, which are naturally produced in the ocean, are involved in ozone depletion in both the troposphere and stratosphere. Three prominent compounds transporting large amounts of marine halogens into the atmosphere are bromoform (CHBr3), dibromomethane (CH2Br2) and methyl iodide (CH3I). The input of marine halogens to the stratosphere has been estimated from observations and modelling studies using low-resolution oceanic emission scenarios derived from top-down approaches. In order to improve emission inventory estimates, we calculate data-based high resolution global sea-to-air flux estimates of these compounds from surface observations within the HalOcAt (Halocarbons in the Ocean and Atmosphere) database (https://halocat.geomar.de/). Global maps of marine and atmospheric surface concentrations are derived from the data which are divided into coastal, shelf and open ocean regions. Considering physical and biogeochemical characteristics of ocean and atmosphere, the open ocean water and atmosphere data are classified into 21 regions. The available data are interpolated onto a 1 degrees x 1 degrees grid while missing grid values are interpolated with latitudinal and longitudinal dependent regression techniques reflecting the compounds' distributions. With the generated surface concentration climatologies for the ocean and atmosphere, global sea-to-air concentration gradients and sea-to-air fluxes are calculated. Based on these calculations we estimate a total global flux of 1.5/2.5 Gmol Br yr(-1) for CHBr3, 0.78/0.98 Gmol Br yr(-1) for CH2Br2 and 1.24/1.45 Gmol Br yr(-1) for CH3I (robust fit/ordinary least squares regression techniques). Contrary to recent studies, negative fluxes occur in each sea-to-air flux climatology, mainly in the Arctic and Antarctic regions. "Hot spots" for global polybromomethane emissions are located in the equatorial region, whereas methyl iodide emissions are enhanced in the subtropical gyre regions. Inter-annual and ... Other/Unknown Material Antarc* Antarctic Arctic Phytoplankton Chalmers University of Technology: Chalmers research Antarctic Arctic Atmospheric Chemistry and Physics 13 17 8915 8934 |
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Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Meteorology and Atmospheric Sciences MARINE BOUNDARY-LAYER HALOGENATED ORGANIC-COMPOUNDS PHOTOCHEMICAL PRODUCTION PHYTOPLANKTON CULTURES STRATOSPHERIC BROMINE TROPICAL TROPOPAUSE LAYER GAS-EXCHANGE WIND-SPEED ATLANTIC-OCEAN OZONE DEPLETION |
spellingShingle |
Meteorology and Atmospheric Sciences MARINE BOUNDARY-LAYER HALOGENATED ORGANIC-COMPOUNDS PHOTOCHEMICAL PRODUCTION PHYTOPLANKTON CULTURES STRATOSPHERIC BROMINE TROPICAL TROPOPAUSE LAYER GAS-EXCHANGE WIND-SPEED ATLANTIC-OCEAN OZONE DEPLETION Ziska, F. Quack, B. Abrahamsson, Katarina Archer, S. D. Atlas, E. Bell, T. A. Butler, J. H. Carpenter, L. J. Jones, C. E. Harris, N. R. P. Hepach, H. Heumann, K. G. Hughes, C. Kuss, J. Krüger, K. Liss, P. Moore, R. M. Orlikowska, A. Raimund, S Reeves, C.E. Reifenhäuser, W. Robinson, A. D. Schall, C. Tanhua, T. Tegtmeier, S. Turner, S. Wang, L. Wallace, D. Williams, J. Yamamoto, H. Yvon-Lewis, S. Yokouchi, Y. Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
topic_facet |
Meteorology and Atmospheric Sciences MARINE BOUNDARY-LAYER HALOGENATED ORGANIC-COMPOUNDS PHOTOCHEMICAL PRODUCTION PHYTOPLANKTON CULTURES STRATOSPHERIC BROMINE TROPICAL TROPOPAUSE LAYER GAS-EXCHANGE WIND-SPEED ATLANTIC-OCEAN OZONE DEPLETION |
description |
Volatile halogenated organic compounds containing bromine and iodine, which are naturally produced in the ocean, are involved in ozone depletion in both the troposphere and stratosphere. Three prominent compounds transporting large amounts of marine halogens into the atmosphere are bromoform (CHBr3), dibromomethane (CH2Br2) and methyl iodide (CH3I). The input of marine halogens to the stratosphere has been estimated from observations and modelling studies using low-resolution oceanic emission scenarios derived from top-down approaches. In order to improve emission inventory estimates, we calculate data-based high resolution global sea-to-air flux estimates of these compounds from surface observations within the HalOcAt (Halocarbons in the Ocean and Atmosphere) database (https://halocat.geomar.de/). Global maps of marine and atmospheric surface concentrations are derived from the data which are divided into coastal, shelf and open ocean regions. Considering physical and biogeochemical characteristics of ocean and atmosphere, the open ocean water and atmosphere data are classified into 21 regions. The available data are interpolated onto a 1 degrees x 1 degrees grid while missing grid values are interpolated with latitudinal and longitudinal dependent regression techniques reflecting the compounds' distributions. With the generated surface concentration climatologies for the ocean and atmosphere, global sea-to-air concentration gradients and sea-to-air fluxes are calculated. Based on these calculations we estimate a total global flux of 1.5/2.5 Gmol Br yr(-1) for CHBr3, 0.78/0.98 Gmol Br yr(-1) for CH2Br2 and 1.24/1.45 Gmol Br yr(-1) for CH3I (robust fit/ordinary least squares regression techniques). Contrary to recent studies, negative fluxes occur in each sea-to-air flux climatology, mainly in the Arctic and Antarctic regions. "Hot spots" for global polybromomethane emissions are located in the equatorial region, whereas methyl iodide emissions are enhanced in the subtropical gyre regions. Inter-annual and ... |
author |
Ziska, F. Quack, B. Abrahamsson, Katarina Archer, S. D. Atlas, E. Bell, T. A. Butler, J. H. Carpenter, L. J. Jones, C. E. Harris, N. R. P. Hepach, H. Heumann, K. G. Hughes, C. Kuss, J. Krüger, K. Liss, P. Moore, R. M. Orlikowska, A. Raimund, S Reeves, C.E. Reifenhäuser, W. Robinson, A. D. Schall, C. Tanhua, T. Tegtmeier, S. Turner, S. Wang, L. Wallace, D. Williams, J. Yamamoto, H. Yvon-Lewis, S. Yokouchi, Y. |
author_facet |
Ziska, F. Quack, B. Abrahamsson, Katarina Archer, S. D. Atlas, E. Bell, T. A. Butler, J. H. Carpenter, L. J. Jones, C. E. Harris, N. R. P. Hepach, H. Heumann, K. G. Hughes, C. Kuss, J. Krüger, K. Liss, P. Moore, R. M. Orlikowska, A. Raimund, S Reeves, C.E. Reifenhäuser, W. Robinson, A. D. Schall, C. Tanhua, T. Tegtmeier, S. Turner, S. Wang, L. Wallace, D. Williams, J. Yamamoto, H. Yvon-Lewis, S. Yokouchi, Y. |
author_sort |
Ziska, F. |
title |
Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
title_short |
Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
title_full |
Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
title_fullStr |
Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
title_full_unstemmed |
Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
title_sort |
global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-8915-2013 https://research.chalmers.se/en/publication/185316 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic Phytoplankton |
genre_facet |
Antarc* Antarctic Arctic Phytoplankton |
op_relation |
http://dx.doi.org/10.5194/acp-13-8915-2013 https://research.chalmers.se/en/publication/185316 |
op_doi |
https://doi.org/10.5194/acp-13-8915-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
17 |
container_start_page |
8915 |
op_container_end_page |
8934 |
_version_ |
1766070119542292480 |