What is already known:
What this study adds:
Stratosphere-troposphere exchange via extreme extratropical convection has implications for climate change. We test the ability of the ARW-WRF model to simulate the physical aspects of a real case of extreme extratropical convection that injected cloud particles into the stratosphere. We find that the model resolves storm structure sufficiently, and proceed to examine the representation of trace gas transport within the same case of convection. Additionally, distributions of trace gas concentrations across the nested model domain are considered in diagnosing irreversible transport. Trace gas transport is seen in model output within the cloud, but little evidence exists for out of cloud transport.