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

An Objective Analysis of the QBO in ERA-Interim and the Community Atmosphere Model, Version 5. By A. Solomon et al. in Geophysical Research Letters.

The relevance of the location of blocking highs for stratospheric variability in a changing climate. By B. Ayarzagüena et al. in the Journal of Climate.

Can inertia-gravity waves persistently alter the tropopause inversion layer? By D. Kunkel et al. in Geophysical Research letters.

Signatures of Naturally Induced Variability in the Atmosphere using Multiple Reanalysis Datasets. By D.M. Mitchell et al. in the Quarterly Journal of the Royal Meteorological Society.