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

Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. By R. Hossaini et al. in Nature Geoscience.

Improvements in statistical forecasts of monthly and bi-monthly surface air temperatures from stratospheric predictor. By A.Y Karpechko in the Quarterly Journal of the Royal Meteorological Society.

Global survey of concentric gravity waves in AIRS images and ECMWF analysis. By J. Gong et al. in the Journal of Geophysical Research: Atmospheres.

Quantifying the effects of mixing and residual circulation on trends of stratospheric mean age of air. By F. Ploeger et al. in Geophysical Research Letters.

Discussion papers – open for comment

Impact of the 2009 major stratospheric sudden warming on the composition of the stratosphere. By M. Tao et al. in Atmospheric Chemistry and Physics Discussions.

Global distributions of overlapping gravity waves in HIRDLS data. By C.J. Wright et al. in Atmospheric Chemistry and Physics Discussions.

Data assimilation of satellite retrieved ozone, carbon monoxide and nitrogen dioxide with ECMWF’s Composition-IFS. By A. Inness et al. in Atmospheric Chemistry and Physics Discussions.

A perturbed parameter model ensemble to investigate 1991 Mt Pinatubo’s initial sulfur mass emission. By J.-X. Sheng et al. in Atmospheric Chemistry and Physics Discussions.