since decades the UTLS region has been recognized as a challenge for modelling and observations. Many new measurements are available, as well as modelling and theory progressed over the last years and highlighting new perspectives on UTLS relevant processes related to aerosol distribution, cirrus formation, small scale dynamics or climate aspects.

We therefore encourage you to submit an abstract to the 2024 UTLS-workshop held at the Johannes Gutenberg University in Mainz, Germany from the 11-14 March 2024. The workshop will focus on new observations, combined measurement and modelling studies, which are relevant for UTLS research.

Confirmed keynote speakers are Bill Randel, Andrew Gettelman, Albert Herzog, Christina Williamson.

Abstract submission will be open until 15 December.

Please visit the conference page at

https://tp-challenges2024.uni-mainz.de/ to register.

Please also feel free to forward this announcement to whoever might be interested. Your help in this regard would be appreciated. We also apologize for the case you are receiving the announcement several times.

Best regards

Peter Hoor and Aurelia Müller