TEAMx (www.teamx-programme.org) is an international research programme that aims at improving our qualitative and quantitative understanding of transport and exchange processes in the atmosphere over mountainous terrain and at evaluating how well these processes are represented in numerical weather and climate prediction models. One of its main scientific goals is to provide a unique observational dataset to study the exchange processes over a broad range of spatial and temporal scales. To this purpose, several measurement campaigns were conducted in the European Alps, including the one-year long TEAMx Observational Campaign (TOC) that took place between 2024 and 2025 targeting multiple processes contributing to the total exchange within the atmosphere, the HEFEX campaigns on Hintereisferner investigating glacier-atmosphere exchange processes, and additional smaller test campaigns in preparation for the TOC.

This session welcomes all contributions related to the TEAMx research programme, including observational studies resulting from one of the measurement campaigns as well as model and climatological studies.