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

Predictability of Sudden Stratospheric Warmings in the ECMWF extended range forecast system. By A.Y. Karpechko in the Monthly Waether Review.

The Extrapolar SWIFT model (version 1.0): fast stratospheric ozone chemistry for global climate models. By D. Kreyling et al. in Geoscientific Model Development.

Historical tropospheric and stratospheric ozone radiative forcing using the CMIP6 database. By R.Checa-Garcia et al. in the Geophysical Research Letters.

Climate Models Are Uncertain, but We Can Do Something About It. By K.S. Carslaw, et al. in EOS.

First Successful Hindcasts of the 2016 Disruption of the Stratospheric Quasi-biennial Oscillation. By S. Watanabe et al. in the Geophysical Research Letters.

Statistical analysis of inertial gravity wave parameters in the lower stratosphere over Northern China. By L. Chen, et al. in Climate Dynamics.

The Effects of Deep Convection on Regional Temperature Structure in the Tropical Upper Troposphere and Lower Stratosphere. By B.R. Johnston, F. Xie, and C. Liu in the Journal of Geophysical Research: Atmospheres.

First Reprocessing of Southern Hemisphere ADditional OZonesondes (SHADOZ) Profile Records: 3. Uncertainty in Ozone Profile and Total Column. By J.C. Witte et al. in the Journal of Geophysical Research: Atmospheres.