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

Ground-based assessment of the bias and long-term stability of 14 limb and occultation ozone profile data records. By D. Hubert et al. in Atmospheric Measurement Techniques.

An Observationally Constrained Evaluation of the Oxidative Capacity in the Tropical Western Pacific Troposphere. By J.M. Nicely et al. in the Journal of Geophysical Research: Atmospheres.

Decadal climate prediction with a refined anomaly initialisation approach. By D. Volpi et al. in Climate Dynamics.

Sensitivity of volcanic aerosol dispersion to meteorological conditions: a Pinatubo case study. By A.C. Jones et al. in the Journal of Geophysical Research: Atmospheres.

Role of quasiresonant planetary wave dynamics in recent boreal spring-to-autumn extreme events. By V. Petroukhov et al. in the Proceedings of the National Academy of Sciences of the United States of America.

Future Aerosol Reductions and Widening of the Northern Tropical Belt. By R.J. Allen and O. Ajoku in the Journal of Geophysical Research: Atmospheres.

Zonal-mean circulation response to reduced air-sea momentum roughness. By I. Polichtchouk and T.G. Shepherd in the Quarterly Journal of the Royal Meteorological Society.

A two-dimensional Stockwell transform for gravity wave analysis of AIRS measurements. By N.P. Hindley et al. in Atmospheric Measurement Techniques.

Discussion papers – open for comment

Effect of volcanic aerosol on stratospheric NO₂ and N₂O₅ from 2002–2014 as measured by Odin-OSIRIS and Envisat-MIPAS. By C. Adams et al. in Atmospheric Chemistry and Physics Discussions.

Trends of tropical tropospheric ozone from twenty years of European satellite measurements and perspectives for Sentinel-5 Precursor. By K.-P. Heue et al. in Atmospheric Measurement Techniques Discussions.

First detection of ammonia (NH₃) in the Asian monsoon upper troposphere. By M. Höpfner et al. in Atmospheric Chemistry and Physics Discussions.

Global distribution of CO₂ in the Upper-Troposphere and Stratosphere. By M. Diallo et al. in Atmospheric Chemistry and Physics Discussions.

Atmospheric abundance and global emissions of perfluorocarbons CF₄, C₂F₆ and C₃F₈ since 1900 inferred from ice core, firn, air archive and in situ measurements. By C.M. Trudinger et al. in Atmospheric Chemistry and Physics Discussions.

Direct Inversion of Circulation and Mixing from Tracer Measurements: I. Method. By T. von Clarmann and U. Grabowski in Atmospheric Chemistry and Physics Discussions.

Recent divergences in stratospheric water vapor measurements by frost point hygrometers and the Aura Microwave Limb Sounder. By D.F. Hurst et al. in Atmospheric Measurement Techniques Discussions.

Altitude Registration of Limb-Scattered Radiation. By L. Moy et al. in Atmospheric Measurement Techniques Discussions.