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

CMIP5/6 models project little change in the statistical characteristics of sudden stratospheric warmings in the 21st century. By J. Rao and G.I. Garfinkel in the Environmental Research Letters.

Equatorial waves, diurnal tides and small‐scale thermal variability in the tropical lower stratosphere from COSMIC‐2 radio occultation. By W.J. Randel, F. Wu, and A. Podglajen in the Journal of Geophysical Research: Atmospheres.

On the effects of the ocean on atmospheric CFC-11 lifetimes and emissions. By P. Wang et al. in PNAS.

Discussion papers – open for comment:

Observation and modelling of ozone-destructive halogen chemistry in a passive degassing volcanic plume. By L. Surl, T. Roberts, and S. Bekki in Atmospheric Chemistry and Physics.