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

Influence of the El Niño–Southern Oscillation on entry stratospheric water vapor in coupled chemistry–ocean CCMI and CMIP6 models. By C.I. Garfinkel et al. in Atmospheric Chemistry and Physics.

The politics and governance of research into solar geoengineering. By D. McLaren and O. Corry in WIREs Climate Change.

How Atmospheric Chemistry and Transport Drive Surface Variability of N2O and CFC‐11. By D.J. Ruiz et al. in the Journal of Geophysical Research: Atmospheres.

Potential of Mid‐tropospheric Water Vapor Isotopes to Improve Large‐Scale Circulation and Weather Predictability. By K. Toride et al. in the Geophysical Research Letters.

The unusual stratospheric Arctic winter 2019/20: Chemical ozone loss from satellite observations and TOMCAT chemical transport model. By M. Weber et al. in the Journal of Geophysical Research: Atmospheres.