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

Effects of mixing on resolved and unresolved scales on stratospheric age of air. By S. Dietmüller et al. in Atmospheric Chemistry and Physics.

New AIM/CIPS Global Observations of Gravity Waves near 50-55 km. By C.E. Randall et al. in Geophysical Research Letters.

Sensitivity of Sudden Stratospheric Warmings to Previous Stratospheric Conditions. By A. de la Camara et al. in the Journal of the Atmospheric Sciences.

Improved consistency of climate projections over Europe after accounting for atmospheric circulation variability. By C. Saffioti et al. in the Journal of Climate.

Observations and fine-scale model simulations of gravity waves over Davis, East Antarctica (69S, 78E). By S.P. Alexander et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

Multi-model Impacts of Climate Change on Pollution Transport from Global Emission Source Regions. By R.M. Doherty et al. in Atmospheric Chemistry and Physics Discussions.

Nonlinear response of tropical lower stratospheric temperature and water vapor to ENSO. By C.I. Garfinkel et al. in Atmospheric Chemistry and Physics Discussions.

Space-Time Variability of UTLS Chemical Distribution in the Asian Summer Monsoon Viewed by Limb and Nadir Satellite Sensors. By J. Luo et al. in Atmospheric Chemistry and Physics Discussions.

Dynamics and composition of the Asian summer monsoon anticyclone. By K.-D. Gottschaldt et al. in Atmospheric Chemistry and Physics Discussions.