Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone
The quasi-biennial oscillation (QBO), as the dominant mode in the equatorial stratosphere, modulates the dynamical circulation and the distribution of trace gases in the stratosphere. While the zonal mean QBO signals in stratospheric ozone have been relatively well documented, the zonal (longitudina...
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ftcopernicus:oai:publications.copernicus.org:acp101821 2023-05-15T13:38:41+02:00 Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone Wang, Wuke Hong, Jin Shangguan, Ming Wang, Hongyue Jiang, Wei Zhao, Shuyun 2022-10-21 application/pdf https://doi.org/10.5194/acp-22-13695-2022 https://acp.copernicus.org/articles/22/13695/2022/ eng eng doi:10.5194/acp-22-13695-2022 https://acp.copernicus.org/articles/22/13695/2022/ eISSN: 1680-7324 Text 2022 ftcopernicus https://doi.org/10.5194/acp-22-13695-2022 2022-10-24T16:22:41Z The quasi-biennial oscillation (QBO), as the dominant mode in the equatorial stratosphere, modulates the dynamical circulation and the distribution of trace gases in the stratosphere. While the zonal mean QBO signals in stratospheric ozone have been relatively well documented, the zonal (longitudinal) differences in the QBO ozone signals have been less studied. Using satellite-based total column ozone (TCO) data from 1979 to 2020, zonal mean ozone data from 1984 to 2020, three-dimensional (3-D) ozone data from 2002 to 2020, and ERA5 reanalysis and model simulations from 1979 to 2020, we demonstrate that the influences of the QBO (using a QBO index at 20 hPa) on stratospheric ozone are zonally asymmetric. The global distribution of stratospheric ozone varies significantly during different QBO phases. During QBO westerly (QBOW) phases, the TCO and stratospheric ozone are anomalously high in the tropics, while in the subtropics they are anomalously low over most of the areas, especially during the winter–spring of the respective hemisphere. This confirms the results from previous studies. In the polar region, the TCO and stratospheric ozone (50–10 hPa) anomalies are seasonally dependent and zonally asymmetric. During boreal winter (December–February, DJF), positive anomalies of the TCO and stratospheric ozone are evident during QBOW over the regions from North America to the North Atlantic (120 ∘ W–30 ∘ E), while significant negative anomalies exist over other longitudes in the Arctic. In boreal autumn (September–November, SON), the TCO and stratospheric ozone are anomalously high from Greenland to Eurasia (60 ∘ W–120 ∘ E) but anomalously low in other regions over the Arctic. Weak positive TCO and stratospheric ozone anomalies exist over the South America sector (90 ∘ W–30 ∘ E) of the Antarctic, while negative anomalies of the TCO and stratospheric ozone are seen in other longitudes. The consistent features of TCO and stratospheric ozone anomalies indicate that the QBO signals in TCO are mainly determined by the ... Text Antarc* Antarctic Arctic Greenland North Atlantic Copernicus Publications: E-Journals Antarctic Arctic Greenland The Antarctic Atmospheric Chemistry and Physics 22 20 13695 13711 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The quasi-biennial oscillation (QBO), as the dominant mode in the equatorial stratosphere, modulates the dynamical circulation and the distribution of trace gases in the stratosphere. While the zonal mean QBO signals in stratospheric ozone have been relatively well documented, the zonal (longitudinal) differences in the QBO ozone signals have been less studied. Using satellite-based total column ozone (TCO) data from 1979 to 2020, zonal mean ozone data from 1984 to 2020, three-dimensional (3-D) ozone data from 2002 to 2020, and ERA5 reanalysis and model simulations from 1979 to 2020, we demonstrate that the influences of the QBO (using a QBO index at 20 hPa) on stratospheric ozone are zonally asymmetric. The global distribution of stratospheric ozone varies significantly during different QBO phases. During QBO westerly (QBOW) phases, the TCO and stratospheric ozone are anomalously high in the tropics, while in the subtropics they are anomalously low over most of the areas, especially during the winter–spring of the respective hemisphere. This confirms the results from previous studies. In the polar region, the TCO and stratospheric ozone (50–10 hPa) anomalies are seasonally dependent and zonally asymmetric. During boreal winter (December–February, DJF), positive anomalies of the TCO and stratospheric ozone are evident during QBOW over the regions from North America to the North Atlantic (120 ∘ W–30 ∘ E), while significant negative anomalies exist over other longitudes in the Arctic. In boreal autumn (September–November, SON), the TCO and stratospheric ozone are anomalously high from Greenland to Eurasia (60 ∘ W–120 ∘ E) but anomalously low in other regions over the Arctic. Weak positive TCO and stratospheric ozone anomalies exist over the South America sector (90 ∘ W–30 ∘ E) of the Antarctic, while negative anomalies of the TCO and stratospheric ozone are seen in other longitudes. The consistent features of TCO and stratospheric ozone anomalies indicate that the QBO signals in TCO are mainly determined by the ... |
format |
Text |
author |
Wang, Wuke Hong, Jin Shangguan, Ming Wang, Hongyue Jiang, Wei Zhao, Shuyun |
spellingShingle |
Wang, Wuke Hong, Jin Shangguan, Ming Wang, Hongyue Jiang, Wei Zhao, Shuyun Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
author_facet |
Wang, Wuke Hong, Jin Shangguan, Ming Wang, Hongyue Jiang, Wei Zhao, Shuyun |
author_sort |
Wang, Wuke |
title |
Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
title_short |
Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
title_full |
Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
title_fullStr |
Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
title_full_unstemmed |
Zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
title_sort |
zonally asymmetric influences of the quasi-biennial oscillation on stratospheric ozone |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-13695-2022 https://acp.copernicus.org/articles/22/13695/2022/ |
geographic |
Antarctic Arctic Greenland The Antarctic |
geographic_facet |
Antarctic Arctic Greenland The Antarctic |
genre |
Antarc* Antarctic Arctic Greenland North Atlantic |
genre_facet |
Antarc* Antarctic Arctic Greenland North Atlantic |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-22-13695-2022 https://acp.copernicus.org/articles/22/13695/2022/ |
op_doi |
https://doi.org/10.5194/acp-22-13695-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
20 |
container_start_page |
13695 |
op_container_end_page |
13711 |
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1766109623002071040 |