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

Impact of Volcanic Aerosols on Stratospheric Ozone Recovery. By V. Naik et al. in the Journal of Geophysical Research: Atmospheres.

The characteristics of the lower stratospheric gravity wave field above Halley (75°S, 26°W), Antarctica, from radiosonde observations. By T. Moffat-Griffin and S.-R. Colwell in the Journal of Geophysical Research: Atmospheres.

Mirrored Changes in Antarctic Ozone and Stratospheric Temperature in the late 20th versus early 21st Centuries. By S. Solomon et al. in the Journal of Geophysical Research: Atmospheres.

Gravity Wave Spectra in the Lower Stratosphere Diagnosed from Project Loon Balloon Trajectories. By M.R. Schoeberl et al. in the Journal of Geophysical Research: Atmospheres.

Dynamical Heating of the Arctic Atmosphere during the Springtime Transition. By X. Long and W.A. Robinson in the Journal of Climate.

Contributions of climate feedbacks to changes in atmospheric circulation. By P. Ceppi and T.G. Shepherd in the Journal of Climate.

Connecting Tropical Climate Change with Southern Ocean Heat Uptake. By Y.-T- Hwang et al. in Geophysical Research Letters.

The relationship between northern hemisphere winter blocking and tropical modes of variability. By G. Gollan and R.J. Greatbatch in the Journal of Climate.

Discussion papers – open for comment

The Network for the Detection of Atmospheric Composition Change (NDACC): History, status and perspectives. By M. de Mazière et al. in Atmospheric Chemistry and Physics Discussions.

VESPA-22: a ground-based microwave spectrometer for long-term measurements of Polar stratospheric water vapor. By G. Mevi et al. in Atmospheric Measurement Techniques Discussions.

Drift corrected Odin-OSIRIS ozone product: algorithm and updated stratospheric ozone trends. By A.E. Bourassa et al. in Atmospheric Measurement Techniques Discussions.