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

Future Directions for the World Climate Research Programme. By G. Brasseur and D. Carlson in EOS.

On the accuracy of stratospheric aerosol extinction derived from in situ size distribution measurements and surface area density derived from remote SAGE II and HALOE extinction measurements. By M. Kovilakam and T. Deshler in the Journal of Geophysical Research: Atmospheres.

Decadal hindcasts initialised using observed surface wind stress: Evaluation and Prediction out to 2024. By M. Thoma et al. in Geophysical Research Letters.

Temporal variations of flux and altitude of sulfur dioxide emissions during volcanic eruptions: implications for long-range dispersal of volcanic clouds. By M. Boichu et al. in Atmospheric Chemistry and Physics.

A tropospheric chemistry reanalysis for the years 2005–2012 based on an assimilation of OMI, MLS, TES, and MOPITT satellite data. By K. Miyazaki et al. in Atmospheric Chemistry and Physics.

Stratospheric response to intraseasonal changes in incoming solar radiation. By C.I. Garfinkel et al. in the Journal of Geophysical Research: Atmospheres.

Self Acceleration and Instability of Gravity Wave Packets: 1. Effects of Temporal Localization. By D.C. Fritts et al. in the Journal of Geophysical Research: Atmospheres.

Two decades of water vapor measurements with the FISH fluorescence hygrometer: a review. By J. Meyer et al. in Atmospheric Chemistry and Physics.

Extended and refined multi sensor reanalysis of total ozone for the period 1970–2012. By R.J. van der A et al. in Atmospheric Measurement Techniques.

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

Discussion papers – open for comment

The imprint of stratospheric transport on column-averaged methane. By A. Ostler et al. in Atmospheric Chemistry and Physics Discussions.

Implications of model bias in carbon monoxide for methane lifetime. By S.A. Strode et al. in Atmospheric Chemistry and Physics Discussions.