Articles | Volume 25, issue 4
https://doi.org/10.5194/acp-25-2047-2025
https://doi.org/10.5194/acp-25-2047-2025
Research article
 | 
17 Feb 2025
Research article |  | 17 Feb 2025

Impact of SO2 injection profiles on simulated volcanic forcing for the 2009 Sarychev eruptions – investigating the importance of using high-vertical-resolution methods when compiling SO2 data

Emma Axebrink, Moa K. Sporre, and Johan Friberg

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Cited articles

Andersson, S., Martinsson, B., Vernier, J., Friberg, J., Brenninkmeijer, C., Hermann, M., Velthoven, P., and Zahn, A.: Significant radiative impact of volcanic aerosol in the lowermost stratosphere, Nat. Commun., 6, 7692, https://doi.org/10.1038/ncomms8692, 2015. a, b
Appenzeller, C., Holton, J. R., and Rosenlof, K. H.: Seasonal variation of mass transport across the tropopause, J. Geophys. Res.-Atmos., 101, 15071–15078, https://doi.org/10.1029/96JD00821, 1996. a
Axebrink, E., Friberg, J., and Sporre, M. K.: Data for: Impact of SO2 injection profiles on simulated volcanic forcing for the Sarychev 2009 eruptions – investigating the importance of using high vertical resolution methods when compiling SO2 data, Zenodo [data set], https://doi.org/10.5281/zenodo.11192344, 2024. a
CALIOP data are produced by NASA Langley Research Centre: CAL_LID_L1-Standard-V4-51, NASA [data set], https://doi.org/10.5067/CALIOP/CALIPSO/CAL_LID_L1-Standard-V4-51, 2023. a
Carboni, E., Grainger, R. G., Mather, T. A., Pyle, D. M., Thomas, G. E., Siddans, R., Smith, A. J. A., Dudhia, A., Koukouli, M. E., and Balis, D.: The vertical distribution of volcanic SO2 plumes measured by IASI, Atmos. Chem. Phys., 16, 4343–4367, https://doi.org/10.5194/acp-16-4343-2016, 2016. a
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Short summary
We investigate the importance of using high-vertical-resolution (HR) SO2 data when simulating volcanic eruptions' impact on the stratospheric aerosol load and climate, using WACCM, and compare simulations with aerosol observations from CALIOP. Simulations with HR SO2 data match the observations well, whereas simulations with the model's default low-resolution (LR) data underestimate the aerosol load by ~ 50 %. The resulting climate cooling is twice as high for the HR than the LR SO2 data.
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