loading page

Impact of Sudden Stratospheric Warmings on the Stratosphere-to-Troposphere Transport of Ozone
  • +2
  • Jae Won Lee,
  • Amy Hawes Butler,
  • John R Albers,
  • Yutian Wu,
  • Simon H Lee
Jae Won Lee
Lamont-Doherty Earth Observatory of Columbia University

Corresponding Author:[email protected]

Author Profile
Amy Hawes Butler
NOAA Chemical Sciences Laboratory
Author Profile
John R Albers
University of Colorado Boulder
Author Profile
Yutian Wu
Lamont-Doherty Earth Observatory of Columbia University
Author Profile
Simon H Lee
Columbia University
Author Profile

Abstract

not-yet-known not-yet-known not-yet-known unknown 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.
27 Sep 2024Submitted to ESS Open Archive
28 Sep 2024Published in ESS Open Archive