SPARC Science update: 13 September – 19 September

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

Introduction to Special Collection “The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences”. By G.L. Manney, A.H. Butler, K. Wargan, and J.-U. Groß in the Journal of Geophysical Reseach: Atmospheres.

Surface-to-space atmospheric waves from Hunga Tonga–Hunga Ha’apai eruption. By C. Wright et al. in Nature.

How Unexpected Was the 2021 Pacific Northwest Heatwave? By K.A. McKinnon and I.R. Simpson in the Geophysical Research letters.

Identification of smoke and sulfuric acid aerosol in SAGE III/ISS extinction spectra. By T.N. Knepp et al. in Atmospheric Measurement Techniques.

Abundant Nitrate and Nitric Acid Aerosol in the Upper troposphere and Lower Stratosphere. By P. Yu et al. in the Geophysical Research Letters.

Discussion papers – open for comment:

Gravity waves generated by the high graupel/hail loading through buoyancy oscillations in an overshooting hailstorm. By X. Guo, X. Guo, and D. Fu in Atmospheric Chemistry and Physics.