Disentangling the Advective Brewer‐Dobson Circulation Change
Abstract Climate models robustly project acceleration of the Brewer‐Dobson circulation (BDC) in response to climate change. However, the BDC trends simulated by comprehensive models are poorly constrained by observations, which cannot even determine the sign of potential trends. Additionally, the ch...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-06-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2023GL105919 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849725835910578176 |
|---|---|
| author | P. Šácha R. Zajíček A. Kuchař R. Eichinger P. Pišoft H. E. Rieder |
| author_facet | P. Šácha R. Zajíček A. Kuchař R. Eichinger P. Pišoft H. E. Rieder |
| author_sort | P. Šácha |
| collection | DOAJ |
| description | Abstract Climate models robustly project acceleration of the Brewer‐Dobson circulation (BDC) in response to climate change. However, the BDC trends simulated by comprehensive models are poorly constrained by observations, which cannot even determine the sign of potential trends. Additionally, the changing structure of the troposphere and stratosphere has received increasing attention in recent years. The extent to which vertical shifts of the circulation are driving the acceleration is under debate. In this study, we present a novel method that enables the attribution of advective BDC changes to structural changes of the circulation and of the stratosphere itself. Using this method allows studying the advective BDC trends in unprecedented detail and sheds new light into discrepancies between different data sets (reanalyses and models) at the tropopause and in the lower stratosphere. Our findings provide insights into the reliability of model projections of BDC changes and offer new possibilities for observational constraints. |
| format | Article |
| id | doaj-art-a8ee70a1168c4b67ae3a760c7d79b17c |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-a8ee70a1168c4b67ae3a760c7d79b17c2025-08-20T03:10:21ZengWileyGeophysical Research Letters0094-82761944-80072024-06-015112n/an/a10.1029/2023GL105919Disentangling the Advective Brewer‐Dobson Circulation ChangeP. Šácha0R. Zajíček1A. Kuchař2R. Eichinger3P. Pišoft4H. E. Rieder5Department of Atmospheric Physics, Faculty of Mathematics and Physics Charles University Praha Czech RepublicDepartment of Atmospheric Physics, Faculty of Mathematics and Physics Charles University Praha Czech RepublicInstitute of Meteorology and Climatology, University of Natural Resources and Life Sciences, Vienna (BOKU) Vienna AustriaDepartment of Atmospheric Physics, Faculty of Mathematics and Physics Charles University Praha Czech RepublicDepartment of Atmospheric Physics, Faculty of Mathematics and Physics Charles University Praha Czech RepublicInstitute of Meteorology and Climatology, University of Natural Resources and Life Sciences, Vienna (BOKU) Vienna AustriaAbstract Climate models robustly project acceleration of the Brewer‐Dobson circulation (BDC) in response to climate change. However, the BDC trends simulated by comprehensive models are poorly constrained by observations, which cannot even determine the sign of potential trends. Additionally, the changing structure of the troposphere and stratosphere has received increasing attention in recent years. The extent to which vertical shifts of the circulation are driving the acceleration is under debate. In this study, we present a novel method that enables the attribution of advective BDC changes to structural changes of the circulation and of the stratosphere itself. Using this method allows studying the advective BDC trends in unprecedented detail and sheds new light into discrepancies between different data sets (reanalyses and models) at the tropopause and in the lower stratosphere. Our findings provide insights into the reliability of model projections of BDC changes and offer new possibilities for observational constraints.https://doi.org/10.1029/2023GL105919Brewer‐Dobson circulationresidual mean circulationtropical upwellingGHG‐induced changestropopausestratosphere |
| spellingShingle | P. Šácha R. Zajíček A. Kuchař R. Eichinger P. Pišoft H. E. Rieder Disentangling the Advective Brewer‐Dobson Circulation Change Geophysical Research Letters Brewer‐Dobson circulation residual mean circulation tropical upwelling GHG‐induced changes tropopause stratosphere |
| title | Disentangling the Advective Brewer‐Dobson Circulation Change |
| title_full | Disentangling the Advective Brewer‐Dobson Circulation Change |
| title_fullStr | Disentangling the Advective Brewer‐Dobson Circulation Change |
| title_full_unstemmed | Disentangling the Advective Brewer‐Dobson Circulation Change |
| title_short | Disentangling the Advective Brewer‐Dobson Circulation Change |
| title_sort | disentangling the advective brewer dobson circulation change |
| topic | Brewer‐Dobson circulation residual mean circulation tropical upwelling GHG‐induced changes tropopause stratosphere |
| url | https://doi.org/10.1029/2023GL105919 |
| work_keys_str_mv | AT psacha disentanglingtheadvectivebrewerdobsoncirculationchange AT rzajicek disentanglingtheadvectivebrewerdobsoncirculationchange AT akuchar disentanglingtheadvectivebrewerdobsoncirculationchange AT reichinger disentanglingtheadvectivebrewerdobsoncirculationchange AT ppisoft disentanglingtheadvectivebrewerdobsoncirculationchange AT herieder disentanglingtheadvectivebrewerdobsoncirculationchange |