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

Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005–2021. By M.J. Prather, L. Froidevaux.2, and N.J. Livesey inAtmospheric Chemistry and Physics.

Research on the unusual spring 2020 Arctic stratospheric ozone depletion above Ny-Ålesund, Norway. By Q. Li et al. in Atmospheric Chemistry and Physics.

Interactive stratospheric aerosol models’ response to different amounts and altitudes of SO2 injection during the 1991 Pinatubo eruption. By I. Quaglia et al. in Atmospheric Chemistry and Physics.

Reconstructing volcanic radiative forcing since 1990, using a comprehensive emission inventory and spatially resolved sulfur injections from satellite data in a chemistry-climate model. By J. Schallock et al. in Atmospheric Chemistry and Physics.

A history of the 1.5°C target. By B. Cointe and H. Guillemot in WIREs Climate Change.