The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere
Rising greenhouse gases (GHG) and decreasing anthropogenic ozone-depleting substances (ODS) are the main drivers of the stratospheric climate evolution in the 21st century. However, the coupling between stratospheric composition, radiation and dynamics is subject to many uncertainties, which is part...
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Online Access: | https://doi.org/10.1088/1748-9326/acb0e6 https://doaj.org/article/b357c1dd7459484a99dadc08a46f7e91 |
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ftdoajarticles:oai:doaj.org/article:b357c1dd7459484a99dadc08a46f7e91 2023-09-05T13:17:06+02:00 The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere Jessica Kult-Herdin Timofei Sukhodolov Gabriel Chiodo Ramiro Checa-Garcia Harald E Rieder 2023-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/acb0e6 https://doaj.org/article/b357c1dd7459484a99dadc08a46f7e91 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/acb0e6 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acb0e6 1748-9326 https://doaj.org/article/b357c1dd7459484a99dadc08a46f7e91 Environmental Research Letters, Vol 18, Iss 2, p 024032 (2023) stratosphere temperature GHG ODS interactive chemistry Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2023 ftdoajarticles https://doi.org/10.1088/1748-9326/acb0e6 2023-08-13T00:36:51Z Rising greenhouse gases (GHG) and decreasing anthropogenic ozone-depleting substances (ODS) are the main drivers of the stratospheric climate evolution in the 21st century. However, the coupling between stratospheric composition, radiation and dynamics is subject to many uncertainties, which is partly because of the simplistic representation of ozone (O _3 ) in many current climate models. Changes in ozone due to heterogeneous chemistry are known to be the largest during springtime in the Arctic, which is also a season with very active stratosphere–troposphere coupling. The focus of this study is to investigate the role of varying ozone levels driven by changing GHG and ODS for the Arctic polar cap stratosphere. We use two state-of-the-art chemistry-climate models with ocean coupling in two configurations (prescribed ozone fields vs. interactive ozone chemistry) for three different scenarios: preindustrial conditions—1 × CO _2 , year 2000 conditions (peak anthropogenic ODS levels) and extreme future conditions—4 × CO _2 . Our results show that in the upper and middle stratosphere CO _2 thermal cooling is the dominant effect determining the temperature response under 4 × CO _2 , and outweighs warming effects of ozone by about a factor of ten. In contrast, in the lower stratosphere, the effects of O _3 warming and CO _2 cooling under 4 × CO _2 are largely offsetting each other. ODS driven variations in O _3 affect both the temperature mean and variability, and are responsible for the tight springtime coupling between composition and dynamics under year 2000 conditions in comparison to simulations under 1 × CO _2 or 4 × CO _2 . Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 18 2 024032 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
stratosphere temperature GHG ODS interactive chemistry Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
stratosphere temperature GHG ODS interactive chemistry Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Jessica Kult-Herdin Timofei Sukhodolov Gabriel Chiodo Ramiro Checa-Garcia Harald E Rieder The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
topic_facet |
stratosphere temperature GHG ODS interactive chemistry Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Rising greenhouse gases (GHG) and decreasing anthropogenic ozone-depleting substances (ODS) are the main drivers of the stratospheric climate evolution in the 21st century. However, the coupling between stratospheric composition, radiation and dynamics is subject to many uncertainties, which is partly because of the simplistic representation of ozone (O _3 ) in many current climate models. Changes in ozone due to heterogeneous chemistry are known to be the largest during springtime in the Arctic, which is also a season with very active stratosphere–troposphere coupling. The focus of this study is to investigate the role of varying ozone levels driven by changing GHG and ODS for the Arctic polar cap stratosphere. We use two state-of-the-art chemistry-climate models with ocean coupling in two configurations (prescribed ozone fields vs. interactive ozone chemistry) for three different scenarios: preindustrial conditions—1 × CO _2 , year 2000 conditions (peak anthropogenic ODS levels) and extreme future conditions—4 × CO _2 . Our results show that in the upper and middle stratosphere CO _2 thermal cooling is the dominant effect determining the temperature response under 4 × CO _2 , and outweighs warming effects of ozone by about a factor of ten. In contrast, in the lower stratosphere, the effects of O _3 warming and CO _2 cooling under 4 × CO _2 are largely offsetting each other. ODS driven variations in O _3 affect both the temperature mean and variability, and are responsible for the tight springtime coupling between composition and dynamics under year 2000 conditions in comparison to simulations under 1 × CO _2 or 4 × CO _2 . |
format |
Article in Journal/Newspaper |
author |
Jessica Kult-Herdin Timofei Sukhodolov Gabriel Chiodo Ramiro Checa-Garcia Harald E Rieder |
author_facet |
Jessica Kult-Herdin Timofei Sukhodolov Gabriel Chiodo Ramiro Checa-Garcia Harald E Rieder |
author_sort |
Jessica Kult-Herdin |
title |
The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
title_short |
The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
title_full |
The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
title_fullStr |
The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
title_full_unstemmed |
The impact of different CO2 and ODS levels on the mean state and variability of the springtime Arctic stratosphere |
title_sort |
impact of different co2 and ods levels on the mean state and variability of the springtime arctic stratosphere |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
https://doi.org/10.1088/1748-9326/acb0e6 https://doaj.org/article/b357c1dd7459484a99dadc08a46f7e91 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Environmental Research Letters, Vol 18, Iss 2, p 024032 (2023) |
op_relation |
https://doi.org/10.1088/1748-9326/acb0e6 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acb0e6 1748-9326 https://doaj.org/article/b357c1dd7459484a99dadc08a46f7e91 |
op_doi |
https://doi.org/10.1088/1748-9326/acb0e6 |
container_title |
Environmental Research Letters |
container_volume |
18 |
container_issue |
2 |
container_start_page |
024032 |
_version_ |
1776198407200702464 |