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

Towards a chemical reanalysis in a coupled chemistry-climate model: An evaluation of MOPITT CO assimilation and its impact on tropospheric composition. By B. Gaubert et al. in the Journal of Geophysical Research: Atmospheres.

An intensified hydrological cycle in the simulation of geoengineering by cirrus cloud thinning using ice crystal fall speed changes. By L.S. Jackson et al. in the Journal of Geophysical Research: Atmospheres.

Convective Transport of Formaldehyde to the Upper Troposphere and Lower Stratosphere and Associated Scavenging in Thunderstorms over the Central United States during the 2012 DC3 Study. By A. Fried et al. in the Journal of Geophysical Research: Atmospheres.

Impact of major volcanic eruptions on stratospheric water vapour. By M. Löffler et al. in Atmospheric Chemistry and Physics.

Space-based detection of missing sulfur dioxide sources of global air pollution. By C.A. McLinden et al. in Nature Geoscience.

Distinct effects of anthropogenic aerosols on the East Asian summer monsoon between multi-decadal strong and weak monsoon stages. By X. Xie et al. in the Journal of Geophysical Research: Atmospheres.

Ubiquitous Influence of Waves on Tropical High Cirrus Cloud. By J.-E. Kim et al. in Geophysical Research Letters.

30 years of upper air soundings on board of R/V POLARSTERN. By A. Driemel et al. in Earth System Science Data.

Spectral distribution of gravity wave momentum fluxes over the antarctic peninsula from concordiasi super-pressure balloon data. By R.L. Walterscheid et al. in the Journal of Geophysical Research Letters: Atmospheres.

Summertime nitrate aerosol in the upper troposphere and lower stratosphere over the Tibetan Plateau and the South Asian summer monsoon region. By Y. Gu et al. in Atmospheric Chemistry and Physics.

Representation of the tropical stratospheric zonal wind in global atmospheric reanalyses. By Y. Kawatani et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

A comparison of Loon balloon observations and stratospheric reanalyses products. By L.S. Friedrich et al. in Atmospheric Chemistry and Physics Discussions.

Impacts of heterogeneous uptake of dinitrogen pentoxide and chlorine activation on ozone and reactive nitrogen partitioning: Improvement and application of WRF-Chem model in southern China. By Q. Li et al. in Atmospheric Chemistry and Physics Discussions.