SPARC Science Update: 9 -15 July

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

Evidence of global warming impact on the evolution of the Hadley Circulation in ECMWF centennial reanalyses. By R. D’Agostino and P. Lionello in Climate Dynamics.

On the climatological probability of the vertical propagation of stationary planetary waves. By K. Karami et al. in Atmospheric Chemistry and Physics.

Observations of PAN and its confinement in the Asian summer monsoon anticyclone in high spatial resolution. By J. Ungermann et al. in Atmospheric Chemistry and Physics.

Chemical analysis of refractory stratospheric aerosol particles collected within the arctic vortex and inside polar stratospheric clouds. By M. Ebert et al. in Atmospheric Chemistry and Physics.

The Transient Response of the Southern Ocean to Stratospheric Ozone Depletion. By W.J.M. Seviour et al. in the Journal of Climate.

Tropical waves and the quasi-biennial oscillation in a 7-km global climate simulation. By L.A. Holt et al. in the Journal of the Atmospheric Sciences.

Effects of polar stratospheric clouds in the Nimbus 7 LIMS Version 6 data set. By E. Remsberg and V.L. Harvey in Atmospheric Measurement Techniques.

A comparative analysis of UV nadir-backscatter and infrared limb-emission ozone data assimilation. By R. Dragani in Atmospheric Chemistry and Physics.

The Impact of SST Biases on Projections of Anthropogenic Climate Change: A Greater Role for Atmosphere-only Models? By J. He and B.J. Soden in Geophysical Research Letters.

Assessing risks of solar geoengineering starts with accurate aerosol radiative properties. By J.A. Dykema et al. in Geophysical Research Letters.

Discussion papers – open for comment

Observational evidence for aerosols increasing upper tropospheric humidity. By L. Riuttanen et al. in Atmospheric Chemistry and Physics Discussions.

A mid-latitude stratosphere dynamical index for attribution of stratospheric variability and improved ozone and temperature trend analysis. By W.T. Ball et al. in Atmospheric Chemistry and Physics Discussions.

Spectral analysis of atmospheric composition: application to surface ozone model–measurement comparisons. By D.R. Bowdalo et al. in Atmospheric Chemistry and Physics Discussions.

Two mechanisms of stratospheric ozone loss in the Northern hemisphere, studied using data assimilation of Odin/SMR atmospheric observations. By K. Sagi et al. in Atmospheric Chemistry and Physics Discussions.