On the identification of ozone recovery
As ozone depleting substances decline, stratospheric ozone is displaying signs of healing in the Antarctic lower stratosphere. Here we focus on higher altitudes and the global stratosphere. Two key processes that can influence ozone recovery are evaluated: dynamical variability and solar proton even...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://doi.org/10.1029/2018GL077955 |
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ftncar:oai:drupal-site.org:articles_21723 2023-09-05T13:13:22+02:00 On the identification of ozone recovery Stone, Kane A. (author) Solomon, Susan (author) Kinnison, Douglas E. (author) 2018-05-28 https://doi.org/10.1029/2018GL077955 en eng Geophysical Research Letters--Geophys. Res. Lett.--00948276 VolcanEESM: Global volcanic sulphur dioxide (SO2) emissions database from 1850 to present - Version 1.0--10.5285/76ebdc0b-0eed-4f70-b89e-55e606bcd568 articles:21723 ark:/85065/d7d50qr4 doi:10.1029/2018GL077955 Copyright 2018 American Geophysical Union. article Text 2018 ftncar https://doi.org/10.1029/2018GL077955 2023-08-14T18:47:42Z As ozone depleting substances decline, stratospheric ozone is displaying signs of healing in the Antarctic lower stratosphere. Here we focus on higher altitudes and the global stratosphere. Two key processes that can influence ozone recovery are evaluated: dynamical variability and solar proton events (SPEs). A nine-member ensemble of free-running simulations indicates that dynamical variability dominates the relatively small ozone recovery signal over 1998-2016 in the subpolar lower stratosphere, particularly near the tropical tropopause. The absence of observed recovery there to date is therefore not unexpected. For the upper stratosphere, high latitudes (50-80 degrees N/S) during autumn and winter show the largest recovery. Large halogen-induced odd oxygen loss there provides a fingerprint of seasonal sensitivity to chlorine trends. However, we show that SPEs also have a profound effect on ozone trends within this region since 2000. Thus, accounting for SPEs is important for detection of recovery in the upper stratosphere. Article in Journal/Newspaper Antarc* Antarctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic Geophysical Research Letters 45 10 5158 5165 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
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ftncar |
language |
English |
description |
As ozone depleting substances decline, stratospheric ozone is displaying signs of healing in the Antarctic lower stratosphere. Here we focus on higher altitudes and the global stratosphere. Two key processes that can influence ozone recovery are evaluated: dynamical variability and solar proton events (SPEs). A nine-member ensemble of free-running simulations indicates that dynamical variability dominates the relatively small ozone recovery signal over 1998-2016 in the subpolar lower stratosphere, particularly near the tropical tropopause. The absence of observed recovery there to date is therefore not unexpected. For the upper stratosphere, high latitudes (50-80 degrees N/S) during autumn and winter show the largest recovery. Large halogen-induced odd oxygen loss there provides a fingerprint of seasonal sensitivity to chlorine trends. However, we show that SPEs also have a profound effect on ozone trends within this region since 2000. Thus, accounting for SPEs is important for detection of recovery in the upper stratosphere. |
author2 |
Stone, Kane A. (author) Solomon, Susan (author) Kinnison, Douglas E. (author) |
format |
Article in Journal/Newspaper |
title |
On the identification of ozone recovery |
spellingShingle |
On the identification of ozone recovery |
title_short |
On the identification of ozone recovery |
title_full |
On the identification of ozone recovery |
title_fullStr |
On the identification of ozone recovery |
title_full_unstemmed |
On the identification of ozone recovery |
title_sort |
on the identification of ozone recovery |
publishDate |
2018 |
url |
https://doi.org/10.1029/2018GL077955 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Geophysical Research Letters--Geophys. Res. Lett.--00948276 VolcanEESM: Global volcanic sulphur dioxide (SO2) emissions database from 1850 to present - Version 1.0--10.5285/76ebdc0b-0eed-4f70-b89e-55e606bcd568 articles:21723 ark:/85065/d7d50qr4 doi:10.1029/2018GL077955 |
op_rights |
Copyright 2018 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2018GL077955 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
10 |
container_start_page |
5158 |
op_container_end_page |
5165 |
_version_ |
1776204671009947648 |