1,2,1,2,1,2,- 1institute of Applied Physics (IAP), University of Bern, Bern, Switzerland (alistair.bell@unibe.ch)
- 2Oeschger Centre for Climate Change Research (OCCR), University of Bern, Bern, Switzerland
- 3High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, USA
The 2022 Hunga volcanic eruption, which injected approximately 150 Tg of water vapour directly into the stratosphere, was an unprecedented event and provided a basis for a multitude of middle atmospheric studies. Changes in water vapour in the stratosphere and above affect the chemical composition of the middle atmosphere, the heating and cooling rates in this region, and the longwave downwelling fluxes at the surface.
In this study, we focus on the radiative impact of the changes in the water vapour mixing ratio at two locations where continuous profiling of water vapour has been performed using high-spectral-resolution microwave radiometers. The radiative transfer schemes included in the Whole Atmosphere Community Climate Model (WACCM-X (SD)) are compared to a line-by-line radiative transfer scheme from the Atmospheric Radiative Transfer Simulator (ARTS) to assess the accuracy of these radiative transfer schemes in analysing differences in heating rates and fluxes in the middle atmosphere.
How to cite: Bell, A., Stober, G., Shi, G., Liu, H., and Murk, A.: Radiative Effects of Hunga Volcanic Eruption in the Middle Atmosphere: A Model and Observation-Based Analysis, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-16379, https://doi.org/10.5194/egusphere-egu25-16379, 2025.
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