Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations
Tropospheric bromine radicals in the Arctic efficiently remove ambient ozone and oxidize gaseous elemental mercury. Ground-based bromine monoxide (BrO) observations from the Arctic Ocean and Utqiagvik (formerly Barrow) are combined with Modern Era Retrospective Analysis for Research and Applications...
Published in: | Journal of Geophysical Research: Atmospheres |
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Language: | English |
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2020
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Online Access: | https://doi.org/10.1029/2019JD032139 https://diginole.lib.fsu.edu/islandora/object/fsu%3A774309/datastream/TN/view/Arctic%20Reactive%20Bromine%20Events%20Occur%20In%20Two%20Distinct%20Sets%20Of%20Environmental%20Conditions.jpg |
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ftfloridasu:oai:diginole.lib.fsu.edu:fsu_774309 2024-06-09T07:42:21+00:00 Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations Swanson, William F. (author) Graham, Kelly A. (author) Halfacre, John W. (author) Holmes, Christopher D. (author) Shepson, Paul B. (author) Simpson, William R. (author) 2020-05-27 computer online resource 1 online resource application/pdf https://doi.org/10.1029/2019JD032139 https://diginole.lib.fsu.edu/islandora/object/fsu%3A774309/datastream/TN/view/Arctic%20Reactive%20Bromine%20Events%20Occur%20In%20Two%20Distinct%20Sets%20Of%20Environmental%20Conditions.jpg English eng Journal of Geophysical Research-Atmospheres--2169-897X fsu:774309 iid: FSU_libsubv1_wos_000537788100015 doi:10.1029/2019JD032139 https://diginole.lib.fsu.edu/islandora/object/fsu%3A774309/datastream/TN/view/Arctic%20Reactive%20Bromine%20Events%20Occur%20In%20Two%20Distinct%20Sets%20Of%20Environmental%20Conditions.jpg Text journal article 2020 ftfloridasu https://doi.org/10.1029/2019JD032139 2024-05-10T08:08:09Z Tropospheric bromine radicals in the Arctic efficiently remove ambient ozone and oxidize gaseous elemental mercury. Ground-based bromine monoxide (BrO) observations from the Arctic Ocean and Utqiagvik (formerly Barrow) are combined with Modern Era Retrospective Analysis for Research and Applications version 2 reanalysis meteorological fields to determine how BrO varies with environmental conditions. The mean seasonal BrO abundance varies from year to year (p < 0.001), while regional variance in mean BrO is not statistically significant (p > 0.11). Principal component analysis derived three important principal components from the environmental data set. The third principal component explains the most variance in BrO and is correlated with low ozone and cold temperatures. This principal component is consistent with high BrO during ozone depletion events at cold temperatures and can work concurrently with each of the other two principal compoynents to generate two distinct environmental types of high BrO events. The first principal component consists of a less-stable, thick, mixed layer and low atmospheric pressure and is consistent with observations of high BrO in low-pressure systems (e.g., storms). The second principal component consists of cold and stable conditions and is consistent with high BrO under surface-based temperature inversions. Our principal component regression model predicted the both the vertical column density of BrO in the lowest 2 km of the troposphere (R = 0.45) and the vertical column density of BrO in the lowest 200 m (R = 0.54). This statistical description of two types of reactive bromine events may help to harmonize space-based and ground-based observations. Arctic, blowing snow, boundary-layer, bromine, explosion event, halogen activation, meteorology, molecular bromine, ozone depletion events, sea ice, sea-salt aerosols, statistical analysis, surface ozone, tropospheric bro columns, tropospheric chemistry, vertical-distribution The publisher's version of record is availible ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice Florida State University: DigiNole Commons Arctic Arctic Ocean Journal of Geophysical Research: Atmospheres 125 10 |
institution |
Open Polar |
collection |
Florida State University: DigiNole Commons |
op_collection_id |
ftfloridasu |
language |
English |
description |
Tropospheric bromine radicals in the Arctic efficiently remove ambient ozone and oxidize gaseous elemental mercury. Ground-based bromine monoxide (BrO) observations from the Arctic Ocean and Utqiagvik (formerly Barrow) are combined with Modern Era Retrospective Analysis for Research and Applications version 2 reanalysis meteorological fields to determine how BrO varies with environmental conditions. The mean seasonal BrO abundance varies from year to year (p < 0.001), while regional variance in mean BrO is not statistically significant (p > 0.11). Principal component analysis derived three important principal components from the environmental data set. The third principal component explains the most variance in BrO and is correlated with low ozone and cold temperatures. This principal component is consistent with high BrO during ozone depletion events at cold temperatures and can work concurrently with each of the other two principal compoynents to generate two distinct environmental types of high BrO events. The first principal component consists of a less-stable, thick, mixed layer and low atmospheric pressure and is consistent with observations of high BrO in low-pressure systems (e.g., storms). The second principal component consists of cold and stable conditions and is consistent with high BrO under surface-based temperature inversions. Our principal component regression model predicted the both the vertical column density of BrO in the lowest 2 km of the troposphere (R = 0.45) and the vertical column density of BrO in the lowest 200 m (R = 0.54). This statistical description of two types of reactive bromine events may help to harmonize space-based and ground-based observations. Arctic, blowing snow, boundary-layer, bromine, explosion event, halogen activation, meteorology, molecular bromine, ozone depletion events, sea ice, sea-salt aerosols, statistical analysis, surface ozone, tropospheric bro columns, tropospheric chemistry, vertical-distribution The publisher's version of record is availible ... |
author2 |
Swanson, William F. (author) Graham, Kelly A. (author) Halfacre, John W. (author) Holmes, Christopher D. (author) Shepson, Paul B. (author) Simpson, William R. (author) |
format |
Article in Journal/Newspaper |
title |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
spellingShingle |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
title_short |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
title_full |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
title_fullStr |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
title_full_unstemmed |
Arctic Reactive Bromine Events Occur In Two Distinct Sets Of Environmental Conditions: A Statistical Analysis Of 6 Years Of Observations |
title_sort |
arctic reactive bromine events occur in two distinct sets of environmental conditions: a statistical analysis of 6 years of observations |
publishDate |
2020 |
url |
https://doi.org/10.1029/2019JD032139 https://diginole.lib.fsu.edu/islandora/object/fsu%3A774309/datastream/TN/view/Arctic%20Reactive%20Bromine%20Events%20Occur%20In%20Two%20Distinct%20Sets%20Of%20Environmental%20Conditions.jpg |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice |
op_relation |
Journal of Geophysical Research-Atmospheres--2169-897X fsu:774309 iid: FSU_libsubv1_wos_000537788100015 doi:10.1029/2019JD032139 https://diginole.lib.fsu.edu/islandora/object/fsu%3A774309/datastream/TN/view/Arctic%20Reactive%20Bromine%20Events%20Occur%20In%20Two%20Distinct%20Sets%20Of%20Environmental%20Conditions.jpg |
op_doi |
https://doi.org/10.1029/2019JD032139 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
125 |
container_issue |
10 |
_version_ |
1801371257283805184 |