A selection of new science articles from the past week of interest to the SPARC community (a SPARC Office choice).

Teleconnections of the quasi‐biennial oscillation in a multi‐model ensemble of QBO‐resolving models. By J.A. Anstey et al., in the Quarterly Journal of the Royal Meteorological Society.

Analysis of recent lower-stratospheric ozone trends in chemistry climate models. By S. Dietmüller et al., in Atmospheric Chemistry and Physics.

Overview and update of the SPARC Data Initiative: comparison of stratospheric composition measurements from satellite limb sounders. By M.I. Hegglin et al., in Earth System Science Data.

Vertical structure of the Arctic spring transition in the middle atmosphere. By V. Matthias et al., in the Journal of Geophysical Research: Atmospheres.

Measurement report: regional trends of stratospheric ozone evaluated using the MErged GRIdded Dataset of Ozone Profiles (MEGRIDOP). By V. Sofieva et al., in Atmospheric Chemistry and Physics.  

Asymmetry and pathways of inter-hemispheric transport in the upper troposphere and lower stratosphere. By X. Yan et al., in Atmospheric Chemistry and Physics.