Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean
In both polar regions tropospheric ozone regularly decreases during springtime to negligible concentrations in the atmospheric boundary layer. Here we report the observation of a dramatic ozone depletion event in the atmospheric boundary layer in the vicinity of frost flower fields in the marginal i...
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ftawi:oai:epic.awi.de:13393 2023-09-05T13:15:53+02:00 Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean Jacobi, Hans-Werner Kaleschke, L. Richter, A. Rozanov, A. Burrows, J. P. 2006 application/pdf https://epic.awi.de/id/eprint/13393/ https://epic.awi.de/id/eprint/13393/1/Jac2005g.pdf https://doi.org/10.1029/2005JD006715 https://hdl.handle.net/10013/epic.23777 https://hdl.handle.net/10013/epic.23777.d001 unknown https://epic.awi.de/id/eprint/13393/1/Jac2005g.pdf https://hdl.handle.net/10013/epic.23777.d001 Jacobi, H. W. , Kaleschke, L. , Richter, A. , Rozanov, A. and Burrows, J. P. (2006) Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean , Journal of geophysical research-atmospheres, 111, D15309 . doi:10.1029/2005JD006715 <https://doi.org/10.1029/2005JD006715> , hdl:10013/epic.23777 EPIC3Journal of geophysical research-atmospheres, 111, D15309 Article isiRev 2006 ftawi https://doi.org/10.1029/2005JD006715 2023-08-22T19:50:34Z In both polar regions tropospheric ozone regularly decreases during springtime to negligible concentrations in the atmospheric boundary layer. Here we report the observation of a dramatic ozone depletion event in the atmospheric boundary layer in the vicinity of frost flower fields in the marginal ice zone of the Arctic Ocean monitored by instrumentation on board of the icebreaker RV Polarstern. The ozone mixing ratio decreased from approximately 40 to below 1 ppbV in less than 7 hours. The analyses of backward trajectories and the synoptical conditions demonstrate that the observed decrease was not caused by the transport of ozone-free air, but that the ozone depletion occurred locally. Accordingly, bromine oxide, which is formed during the photochemical destruction of ozone in the presence of reactive bromine compounds, was significantly enhanced: bromine oxide concentrations of approximately 1 · 109 molecules cm-3 are retrieved around the same location from satellite observations. The release of bromine on or, as a result of, the presence of frost flowers appears to be the most likely explanation for the activation of reactive bromine compounds and subsequent depletion of ozone. We conclude that areas in the polar regions covered with frost flowers are the sources of the bromine leading to tropospheric ozone depletion episodes and the observed clouds of bromine oxide. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Journal of Geophysical Research 111 D15 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
In both polar regions tropospheric ozone regularly decreases during springtime to negligible concentrations in the atmospheric boundary layer. Here we report the observation of a dramatic ozone depletion event in the atmospheric boundary layer in the vicinity of frost flower fields in the marginal ice zone of the Arctic Ocean monitored by instrumentation on board of the icebreaker RV Polarstern. The ozone mixing ratio decreased from approximately 40 to below 1 ppbV in less than 7 hours. The analyses of backward trajectories and the synoptical conditions demonstrate that the observed decrease was not caused by the transport of ozone-free air, but that the ozone depletion occurred locally. Accordingly, bromine oxide, which is formed during the photochemical destruction of ozone in the presence of reactive bromine compounds, was significantly enhanced: bromine oxide concentrations of approximately 1 · 109 molecules cm-3 are retrieved around the same location from satellite observations. The release of bromine on or, as a result of, the presence of frost flowers appears to be the most likely explanation for the activation of reactive bromine compounds and subsequent depletion of ozone. We conclude that areas in the polar regions covered with frost flowers are the sources of the bromine leading to tropospheric ozone depletion episodes and the observed clouds of bromine oxide. |
format |
Article in Journal/Newspaper |
author |
Jacobi, Hans-Werner Kaleschke, L. Richter, A. Rozanov, A. Burrows, J. P. |
spellingShingle |
Jacobi, Hans-Werner Kaleschke, L. Richter, A. Rozanov, A. Burrows, J. P. Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
author_facet |
Jacobi, Hans-Werner Kaleschke, L. Richter, A. Rozanov, A. Burrows, J. P. |
author_sort |
Jacobi, Hans-Werner |
title |
Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
title_short |
Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
title_full |
Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
title_fullStr |
Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
title_full_unstemmed |
Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean |
title_sort |
observation of a fast ozone loss in the marginal ice zone of the arctic ocean |
publishDate |
2006 |
url |
https://epic.awi.de/id/eprint/13393/ https://epic.awi.de/id/eprint/13393/1/Jac2005g.pdf https://doi.org/10.1029/2005JD006715 https://hdl.handle.net/10013/epic.23777 https://hdl.handle.net/10013/epic.23777.d001 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_source |
EPIC3Journal of geophysical research-atmospheres, 111, D15309 |
op_relation |
https://epic.awi.de/id/eprint/13393/1/Jac2005g.pdf https://hdl.handle.net/10013/epic.23777.d001 Jacobi, H. W. , Kaleschke, L. , Richter, A. , Rozanov, A. and Burrows, J. P. (2006) Observation of a fast ozone loss in the marginal ice zone of the Arctic Ocean , Journal of geophysical research-atmospheres, 111, D15309 . doi:10.1029/2005JD006715 <https://doi.org/10.1029/2005JD006715> , hdl:10013/epic.23777 |
op_doi |
https://doi.org/10.1029/2005JD006715 |
container_title |
Journal of Geophysical Research |
container_volume |
111 |
container_issue |
D15 |
_version_ |
1776197688780390400 |