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

Northern Hemisphere Stratospheric Pathway of different El Niño flavors in stratosphere-resolving CMIP5 models. By N. Calvo et al. in Climate Dynamics.

Natural Variations of Tropical Width and Recent Trends. By D.F. Mantsis et al. in Geophysical Research Letters.

Causes of interannual variability over the southern hemispheric tropospheric ozone maximum. By J. Liu et al. in Atmospheric Chemistry and Physics.

Modulating Effects of Planetary Wave 3 on a Stratospheric Sudden Warming Event in 2005. By C. Shi et al. in the Journal of the Atmospheric Sciences.

Discussion papers – open for comment

Satellite Measurements of Stratospheric GravityWaves over the Andes/Drake Passage Region Using a 3D S-Transform Technique. By C.J. Wright et al. in Atmospheric Chemistry and Physics Discussions.

Brominated VSLS and their influence on ozone under a changing climate. By S. Falk et al. in Atmospheric Chemistry and Physics Discussions.

A quantitative analysis of the reactions involved in stratospheric polar ozone depletion. By I. Wohltmann et al. in Atmospheric Chemistry and Physics Discussions.

Impact of uncertainties in inorganic chemical rate constants on tropospheric composition and ozone radiative forcing. By B. Newsome and M. Evans in Atmospheric Chemistry and Physics Discussions.