The importance of interactive chemistry for stratosphere–troposphere–coupling
Recent observational and modeling studies suggest that stratospheric ozone depletion not only influences the surface climate in the Southern Hemisphere (SH), but also impacts Northern Hemisphere (NH) spring, which implies a strong interaction between dynamics and chemistry. Here, we systematically a...
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ftoceanrep:oai:oceanrep.geomar.de:44711 2023-05-15T18:02:17+02:00 The importance of interactive chemistry for stratosphere–troposphere–coupling Haase, Sabine Matthes, Katja 2019-03-18 text https://oceanrep.geomar.de/id/eprint/44711/ https://oceanrep.geomar.de/id/eprint/44711/1/acp-19-3417-2019.pdf https://doi.org/10.5194/acp-19-3417-2019 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/44711/1/acp-19-3417-2019.pdf Haase, S. and Matthes, K. (2019) The importance of interactive chemistry for stratosphere–troposphere–coupling. Open Access Atmospheric Chemistry and Physics, 19 (5). pp. 3417-3432. DOI 10.5194/acp-19-3417-2019 <https://doi.org/10.5194/acp-19-3417-2019>. doi:10.5194/acp-19-3417-2019 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2019 ftoceanrep https://doi.org/10.5194/acp-19-3417-2019 2023-04-07T15:42:02Z Recent observational and modeling studies suggest that stratospheric ozone depletion not only influences the surface climate in the Southern Hemisphere (SH), but also impacts Northern Hemisphere (NH) spring, which implies a strong interaction between dynamics and chemistry. Here, we systematically analyze the importance of interactive chemistry with respect to the representation of stratosphere–troposphere coupling and in particular the effects on NH surface climate during the recent past. We use the interactive and specified chemistry version of NCAR's Whole Atmosphere Community Climate Model coupled to an ocean model to investigate differences in the mean state of the NH stratosphere as well as in stratospheric extreme events, namely sudden stratospheric warmings (SSWs), and their surface impacts. To be able to focus on differences that arise from two-way interactions between chemistry and dynamics in the model, the specified chemistry model version uses a time-evolving, model-consistent ozone field generated by the interactive chemistry model version. We also test the effects of zonally symmetric versus asymmetric prescribed ozone, evaluating the importance of ozone waves in the representation of stratospheric mean state and variability. The interactive chemistry simulation is characterized by a significantly stronger and colder polar night jet (PNJ) during spring when ozone depletion becomes important. We identify a negative feedback between lower stratospheric ozone and atmospheric dynamics during the breakdown of the stratospheric polar vortex in the NH, which contributes to the different characteristics of the PNJ between the simulations. Not only the mean state, but also stratospheric variability is better represented in the interactive chemistry simulation, which shows a more realistic distribution of SSWs as well as a more persistent surface impact afterwards compared with the simulation where the feedback between chemistry and dynamics is switched off. We hypothesize that this is also related to the ... Article in Journal/Newspaper polar night OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Atmospheric Chemistry and Physics 19 5 3417 3432 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Recent observational and modeling studies suggest that stratospheric ozone depletion not only influences the surface climate in the Southern Hemisphere (SH), but also impacts Northern Hemisphere (NH) spring, which implies a strong interaction between dynamics and chemistry. Here, we systematically analyze the importance of interactive chemistry with respect to the representation of stratosphere–troposphere coupling and in particular the effects on NH surface climate during the recent past. We use the interactive and specified chemistry version of NCAR's Whole Atmosphere Community Climate Model coupled to an ocean model to investigate differences in the mean state of the NH stratosphere as well as in stratospheric extreme events, namely sudden stratospheric warmings (SSWs), and their surface impacts. To be able to focus on differences that arise from two-way interactions between chemistry and dynamics in the model, the specified chemistry model version uses a time-evolving, model-consistent ozone field generated by the interactive chemistry model version. We also test the effects of zonally symmetric versus asymmetric prescribed ozone, evaluating the importance of ozone waves in the representation of stratospheric mean state and variability. The interactive chemistry simulation is characterized by a significantly stronger and colder polar night jet (PNJ) during spring when ozone depletion becomes important. We identify a negative feedback between lower stratospheric ozone and atmospheric dynamics during the breakdown of the stratospheric polar vortex in the NH, which contributes to the different characteristics of the PNJ between the simulations. Not only the mean state, but also stratospheric variability is better represented in the interactive chemistry simulation, which shows a more realistic distribution of SSWs as well as a more persistent surface impact afterwards compared with the simulation where the feedback between chemistry and dynamics is switched off. We hypothesize that this is also related to the ... |
format |
Article in Journal/Newspaper |
author |
Haase, Sabine Matthes, Katja |
spellingShingle |
Haase, Sabine Matthes, Katja The importance of interactive chemistry for stratosphere–troposphere–coupling |
author_facet |
Haase, Sabine Matthes, Katja |
author_sort |
Haase, Sabine |
title |
The importance of interactive chemistry for stratosphere–troposphere–coupling |
title_short |
The importance of interactive chemistry for stratosphere–troposphere–coupling |
title_full |
The importance of interactive chemistry for stratosphere–troposphere–coupling |
title_fullStr |
The importance of interactive chemistry for stratosphere–troposphere–coupling |
title_full_unstemmed |
The importance of interactive chemistry for stratosphere–troposphere–coupling |
title_sort |
importance of interactive chemistry for stratosphere–troposphere–coupling |
publisher |
Copernicus Publications (EGU) |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/44711/ https://oceanrep.geomar.de/id/eprint/44711/1/acp-19-3417-2019.pdf https://doi.org/10.5194/acp-19-3417-2019 |
genre |
polar night |
genre_facet |
polar night |
op_relation |
https://oceanrep.geomar.de/id/eprint/44711/1/acp-19-3417-2019.pdf Haase, S. and Matthes, K. (2019) The importance of interactive chemistry for stratosphere–troposphere–coupling. Open Access Atmospheric Chemistry and Physics, 19 (5). pp. 3417-3432. DOI 10.5194/acp-19-3417-2019 <https://doi.org/10.5194/acp-19-3417-2019>. doi:10.5194/acp-19-3417-2019 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-19-3417-2019 |
container_title |
Atmospheric Chemistry and Physics |
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19 |
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5 |
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3417 |
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3432 |
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