Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-11025-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-11025-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Sep 2025
Research article |
| 23 Sep 2025
| 23 Sep 2025
Volcanic aerosol modification of the stratospheric circulation in E3SMv2 – Part 1: Wave–mean flow interaction
Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
Christiane Jablonowski
Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
Thomas Ehrmann
Sandia National Laboratories, Albuquerque, NM, USA
Diana Bull
Sandia National Laboratories, Albuquerque, NM, USA
Benjamin Wagman
Sandia National Laboratories, Albuquerque, NM, USA
Benjamin Hillman
Sandia National Laboratories, Albuquerque, NM, USA
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Short summary
Simulations of the 1991 Mt. Pinatubo eruption are used to study how radiative heating by volcanic aerosols alters stratospheric winds. We found that heating of the tropical stratosphere by volcanic aerosols drives increased wind speeds in the midlatitude vortex region. A theoretical framework is then used to identify the dynamical origin of these enhanced winds, which we find to be a combination of a strengthened global circulation and a modification of large-scale atmospheric waves.
Simulations of the 1991 Mt. Pinatubo eruption are used to study how radiative heating by...
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