On the estimation of stratospheric age of air from correlations of multiple trace gases. - Voet, Florian; Ploeger, Felix; Laube, Johannes; Preusse, Peter; Konopka, Paul; Grooß, Jens-Uwe; Ungermann, Jörn; Sinnhuber, Björn-Martin; Höpfner, Michael; Funke, Bernd; Wetzel, Gerald; Johansson, Sören; et al. (Atmospheric Chemistry & Physics, 2025)