Monitoring sudden stratospheric warmings  under climate change since 1980 based on  reanalysis data verified by radio occultation

Li, Ying; Kirchengast, Gottfried; Schwaerz, Marc; Yuan, Yunbin

doi:https://doi.org/10.5194/acp-23-1259-2023

Articles | Volume 23, issue 2

https://doi.org/10.5194/acp-23-1259-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-1259-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 2

Research article

|

24 Jan 2023

Research article |

| 24 Jan 2023

Monitoring sudden stratospheric warmings under climate change since 1980 based on reanalysis data verified by radio occultation

Ying Li, Gottfried Kirchengast, Marc Schwaerz, and Yunbin Yuan

Data sets

ERA5 reanalysis data ECMWF and C3S https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5

GNSS Radio Occultation Record (OPS 5.6 2001-2020) EOPAC Team https://doi.org/10.25364/WEGC/OPS5.6:2021.1

Short summary

We develop a new approach to monitor sudden stratospheric warming (SSW) events since 1980 and develop a 42-year SSW event climatology. Detection and evaluation results suggest that the new method is robust for SSW monitoring. We also found an increase in the duration of SSW main-phase warmings of about 5(±2) d over the three decades from the 1980s to the 2010s, raising the average duration from about 10 to 15 d, and the warming strength is also found increased.