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

Rapid transport of East Asian pollution to the deep tropics. By M.J. Ashford et al. in Atmospheric Chemistry and Physics.

Stratospheric ozone depletion from future nitrous oxide increases. By W. Wang et al. in Atmospheric Chemistry and Physics.

On the hiatus in the acceleration of tropical upwelling since the beginning of the 21st century. By J. Aschmann et al. in Atmospheric Chemistry and Physics.

The use of SMILES data to study ozone loss in the Arctic winter 2009/2010 and comparison with Odin/SMR data using assimilation techniques. By K. Sagi et al. in Atmospheric Chemistry and Physics.

The impact of volcanic aerosol on the Northern Hemisphere stratospheric polar vortex: mechanisms and sensitivity to forcing structure. By M. Toohey et al. in Atmospheric Chemistry and Physics.

Solar cycle in current reanalyses: (non)linear attribution study. By A. Kuchar et al. in Atmospheric Chemistry and Physics Discussions.

Iodine chemistry in the troposphere and its effect on ozone. By A. Saiz-Lopez et al. in Atmospheric Chemistry and Physics.