| Title: |
Impact of sudden stratospheric warmings on the stratosphere-to-troposphere transport of ozone |
| Authors: |
Lee, Jaewon; Butler, Amy H.; Albers, John R.; Wu, Yutian; Lee, Simon H. |
| Contributors: |
University of St Andrews.School of Earth & Environmental Sciences |
| Publication Year: |
2025 |
| Collection: |
University of St Andrews: Digital Research Repository |
| Subject Terms: |
Sudden stratospheric warming; Stratosphere-troposphere coupling; Chemical transport; Ozone; Subseasonal-to-seasonal; ENSO; DAS; MCC |
| Description: |
Funding: J. L. and Y. W. are supported by the U.S. National Science Foundation award AGS‐1802248. ; Sudden stratospheric warmings (SSWs) can significantly impact tropospheric weather systems. Previous studies suggest that SSWs may also influence stratosphere-to-troposphere transport (STT), but their spatial and temporal distribution and mechanisms are not fully understood. The complex relationships between SSWs and the El Niño-Southern Oscillation (ENSO) have also made it difficult to isolate the effects of SSWs on STT. From an idealized ENSO simulation with the WACCM4 model using a stratospheric origin ozone tracer, we investigate the effect of SSWs on the STT of ozone under different ENSO phases. We find a significant increase in lower tropospheric ozone from the SSW onset up to 3 months later over the Arctic, North America, and Europe, regardless of the ENSO phase. This study highlights the significant influence of SSWs on STT on a subseasonal scale. Our results also emphasize the need to consider SSWs when addressing the ENSO impact on STT. ; Peer reviewed |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
Geophysical Research Letters; 313434300; 85215321662; https://hdl.handle.net/10023/31312; https://www.scopus.com/pages/publications/85215321662 |
| DOI: |
10.1029/2024GL112588 |
| Availability: |
https://hdl.handle.net/10023/31312; https://doi.org/10.1029/2024GL112588; https://www.scopus.com/pages/publications/85215321662 |
| Rights: |
© 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Accession Number: |
edsbas.66AE1540 |
| Database: |
BASE |