SPARC Science update: 21 July – 30 July

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


Analysis of the Initiation of an Extreme North Pacific Jet Retraction using Piecewise Tendency Diagnosis. By M. Breeden and J.E. Martin in the Quarterly Journal of the Royal Meteorological Society.

Lidar observations of stratospheric gravity waves from 2011 to 2015 at McMurdo (77.84 °S, 166.69°E), Antarctica: Part II. Potential energy densities, lognormal distributions, and seasonal variations. By X. Chu et al. in the Journal of Geophysical Research: Atmospheres.

Limited angle tomography of mesoscale gravity waves by the infrared limb-sounder GLORIA. By I. Krisch et al in Atmospheric Measurement Techniques.

The impact of mountain waves on an idealized baroclinically unstable large-scale flow. By M.Q. Menchaca and D.R. Durran in the Journal of the Atmospheric Sciences.

The Role of Gravity Wave Drag Optimization in the Splitting of the Antarctic Vortex in the 2002 Sudden Stratospheric Warming. By G. Scheffler, M. Pulido, and C. Rodas in the Geophysical Research Letters.

Recent poleward shift of tropical cyclone formation linked to Hadley cell expansion. By S. Sharmila and K.J.E. Walsh in Nature: Climate Change

A Lagrangian model diagnosis of stratospheric contributions to tropical mid‐tropospheric air. By M. Tao et al. in the Journal of Geophysical Research: Atmospheres.

On the role of heterogeneous chemistry in ozone depletion and recovery. By C. Wilka et al. in the Geophysical Research Letters.