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

Wintertime atmospheric response to Atlantic multidecadal variability: effect of stratospheric representation and ocean–atmosphere coupling. By Y. Peings and G. Magnusdottir in Climate Dynamics.

Synoptic-Scale Behavior of the Extratropical Tropopause Inversion Layer. By R.P. Kedzierski et al. in Geophysical Research Letters.

Methyl chloride as a tracer of tropical tropospheric air in the lowermost stratosphere inferred from IAGOS-CARIBIC passenger aircraft measurements. By T. Umezawa et al. in the Journal of Geophysical Research: Atmospheres.

An assessment of upper-troposphere and lower-stratosphere water vapor in MERRA, MERRA2 and ECMWF reanalyses using Aura MLS observations. By J.H. Jiang et al. in the Journal of Geophysical Research: Atmospheres.

Methane and nitrous oxide retrievals from MIPAS-ENVISAT. By J. Plieninger et al. in Atmospheric Measurement Techniques.

Evaluation of methods for gravity wave extraction from middle-atmospheric lidar temperature measurements. By B. Ehard et al. in Atmospheric Measurement Techniques.

Did the 2011 Nabro eruption affect the optical properties of ice clouds? By A. Meyer et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

Carbon monoxide climatology derived from the trajectory mapping of global MOZAIC-IAGOS data. By M. Osman et al. in Atmospheric Chemistry and Physics Discussions.

Climatic impacts of stratospheric geoengineering with sulfate, black carbon and titania injection. By A.C. et al. in Atmospheric Chemistry and Physics Discussions.

Drivers of changes in stratospheric and tropospheric ozone between year 2000 and 2100. By A. Banerjee et al. in Atmospheric Chemistry and Physics Discussions.