Articles | Volume 23, issue 24
https://doi.org/10.5194/acp-23-15351-2023
© Author(s) 2023. 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-23-15351-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Dec 2023
Research article |
| 15 Dec 2023
| 15 Dec 2023
In situ measurements of perturbations to stratospheric aerosol and modeled ozone and radiative impacts following the 2021 La Soufrière eruption
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
Corey Pedersen
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
John Dykema
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
Jean-Paul Vernier
NASA Langley Research Center, Hampton, Virginia 23666, USA
National Institute of Aerospace, Hampton, Virginia 23666, USA
Sandro Vattioni
Institute of Atmospheric and Climate Science, ETH Zürich, 8092 Zurich, Switzerland
Amit Kumar Pandit
National Institute of Aerospace, Hampton, Virginia 23666, USA
Andrea Stenke
Institute of Atmospheric and Climate Science, ETH Zürich, 8092 Zurich, Switzerland
Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
Elizabeth Asher
Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, USA
now at: Global Monitoring Laboratory, National Oceanic and Atmospheric Administration (NOAA), Boulder, Colorado 80309, USA
Troy Thornberry
Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration (NOAA), Boulder, Colorado 80309, USA
Michael A. Todt
Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, USA
now at: Finnish Meteorological Institute (FMI), 00560 Helsinki, Finland
Thao Paul Bui
NASA Ames Research Center, Moffett Field, California 94043, USA
Jonathan Dean-Day
Bay Area Environmental Research Institute, Petaluma, California 94035, USA
Frank N. Keutsch
CORRESPONDING AUTHOR
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
Data sets
Dynamics and Chemistry of the Summer Stratosphere Airborne Data Products NASA/LARC/SD/ASDC https://doi.org/10.5067/ASDC/DCOTSS-Aircraft-Data_1
CALIPSO Lidar Level 1B profile data, V4-11, NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/CAL_LID_L1-Standard-V4-11
Short summary
In 2021, the eruption of La Soufrière released sulfur dioxide into the stratosphere, resulting in a spread of volcanic aerosol over the Northern Hemisphere. We conducted extensive aircraft and balloon-borne measurements after that, revealing enhanced particle concentration and altered size distribution due to the eruption. The eruption's impact on ozone depletion was minimal, contributing ~0.6 %, and its global radiative forcing effect was modest, mainly affecting tropical and midlatitude areas.
In 2021, the eruption of La Soufrière released sulfur dioxide into the stratosphere, resulting...
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