Observed changes in Brewer–Dobson circulation for 1980–2018
Previous work has examined the Brewer–Dobson circulation (BDC) changes for 1980–2009 based on satellite Microwave Sounding Unit (MSU/AMSU) lower-stratospheric temperature ( T _LS ) observations and ERA-Interim reanalysis data. Here we examine the BDC changes for the longer period now available (1980...
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ftdoajarticles:oai:doaj.org/article:d8093f8e14a14a688df03c233ec5b3e3 2023-09-05T13:15:14+02:00 Observed changes in Brewer–Dobson circulation for 1980–2018 Qiang Fu Susan Solomon Hamid A Pahlavan Pu Lin 2019-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ab4de7 https://doaj.org/article/d8093f8e14a14a688df03c233ec5b3e3 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ab4de7 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ab4de7 1748-9326 https://doaj.org/article/d8093f8e14a14a688df03c233ec5b3e3 Environmental Research Letters, Vol 14, Iss 11, p 114026 (2019) Brewer–Dobson circulation ozone depletion and healing MSU/AMSU Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2019 ftdoajarticles https://doi.org/10.1088/1748-9326/ab4de7 2023-08-13T00:37:22Z Previous work has examined the Brewer–Dobson circulation (BDC) changes for 1980–2009 based on satellite Microwave Sounding Unit (MSU/AMSU) lower-stratospheric temperature ( T _LS ) observations and ERA-Interim reanalysis data. Here we examine the BDC changes for the longer period now available (1980–2018), which also allows analysis of both the ozone depletion (1980–1999) and ozone healing (2000–2018) periods. We provide observational evidence that the annual mean BDC accelerated for 1980–1999 but decelerated for 2000–2018, with the changes largely driven by the Southern Hemisphere (SH), which might be partly contributed by the effects of ozone depletion and healing. We also show that the annual mean BDC has accelerated in the last 40 years (at the 90% confidence level) with a relative strengthening of ∼1.7% per decade. This overall acceleration was driven by both Northern Hemisphere (40%) and SH (60%) cells. Significant SH radiative warming is also identified in September for 2000–2018 after excluding the year 2002 when a very rare SH stratospheric sudden warming occurred, supporting the view that healing of the Antarctic ozone layer has now begun to occur during the month of September. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Environmental Research Letters 14 11 114026 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Brewer–Dobson circulation ozone depletion and healing MSU/AMSU Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Brewer–Dobson circulation ozone depletion and healing MSU/AMSU Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Qiang Fu Susan Solomon Hamid A Pahlavan Pu Lin Observed changes in Brewer–Dobson circulation for 1980–2018 |
topic_facet |
Brewer–Dobson circulation ozone depletion and healing MSU/AMSU Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Previous work has examined the Brewer–Dobson circulation (BDC) changes for 1980–2009 based on satellite Microwave Sounding Unit (MSU/AMSU) lower-stratospheric temperature ( T _LS ) observations and ERA-Interim reanalysis data. Here we examine the BDC changes for the longer period now available (1980–2018), which also allows analysis of both the ozone depletion (1980–1999) and ozone healing (2000–2018) periods. We provide observational evidence that the annual mean BDC accelerated for 1980–1999 but decelerated for 2000–2018, with the changes largely driven by the Southern Hemisphere (SH), which might be partly contributed by the effects of ozone depletion and healing. We also show that the annual mean BDC has accelerated in the last 40 years (at the 90% confidence level) with a relative strengthening of ∼1.7% per decade. This overall acceleration was driven by both Northern Hemisphere (40%) and SH (60%) cells. Significant SH radiative warming is also identified in September for 2000–2018 after excluding the year 2002 when a very rare SH stratospheric sudden warming occurred, supporting the view that healing of the Antarctic ozone layer has now begun to occur during the month of September. |
format |
Article in Journal/Newspaper |
author |
Qiang Fu Susan Solomon Hamid A Pahlavan Pu Lin |
author_facet |
Qiang Fu Susan Solomon Hamid A Pahlavan Pu Lin |
author_sort |
Qiang Fu |
title |
Observed changes in Brewer–Dobson circulation for 1980–2018 |
title_short |
Observed changes in Brewer–Dobson circulation for 1980–2018 |
title_full |
Observed changes in Brewer–Dobson circulation for 1980–2018 |
title_fullStr |
Observed changes in Brewer–Dobson circulation for 1980–2018 |
title_full_unstemmed |
Observed changes in Brewer–Dobson circulation for 1980–2018 |
title_sort |
observed changes in brewer–dobson circulation for 1980–2018 |
publisher |
IOP Publishing |
publishDate |
2019 |
url |
https://doi.org/10.1088/1748-9326/ab4de7 https://doaj.org/article/d8093f8e14a14a688df03c233ec5b3e3 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Environmental Research Letters, Vol 14, Iss 11, p 114026 (2019) |
op_relation |
https://doi.org/10.1088/1748-9326/ab4de7 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ab4de7 1748-9326 https://doaj.org/article/d8093f8e14a14a688df03c233ec5b3e3 |
op_doi |
https://doi.org/10.1088/1748-9326/ab4de7 |
container_title |
Environmental Research Letters |
container_volume |
14 |
container_issue |
11 |
container_start_page |
114026 |
_version_ |
1776197052826386432 |