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

Unusual stratospheric ozone anomalies observed in 22 years of measurements from Lauder, New Zealand. By G. E. Nedoluha et al. in Atmospheric Chemistry and Physics.

Evaluating the advective Brewer-Dobson circulation in three reanalyses for the period 1979–2012. By M. Abalos et al. in the Journal of Geophysical Research: Atmospheres.

The role of convective overshooting clouds in tropical stratosphere–troposphere dynamical coupling. By K. Kodera et al. in Atmospheric Chemistry and Physics.

Lagrangian analysis of microphysical and chemical processes in the Antarctic stratosphere: a case study. By L. Di Liberto et al. in Atmospheric Chemistry and Physics.

Momentum forcing of the quasi-biennial oscillation by equatorial waves in recent reanalyses. By Y.-H. Kim and H.-Y. Chun in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

Ozonesonde profiles from the West Pacific Warm Pool. By R. Newton et al. in Atmospheric Chemistry and Physics Discussions.

Trend analysis of the 20 years time series of stratospheric ozone profiles observed by the GROMOS microwave radiometer at Bern. By L. Moreira et al. in Atmospheric Chemistry and Physics Discussions.