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

Evaluating CMIP5 models using GPS radio occultation COSMIC temperature in UTLS region during 2006–2013: twenty-first century projection and trends. By P. Kishore et al. in Climate Dynamics.

Does ocean-coupling matter for the northern extra-tropical response to projected Arctic sea ice loss? By C. Deser et al. in Geophysical Research Letters.

Large scale atmospheric warming in winter and the Arctic sea ice retreat. By S. Dobricic et al. in the Journal of Climate.

Stratospheric gravity wave momentum flux from radio occultations. By T. Schmidt et al. in the Journal of Geophysical Research: Atmospheres.

The Upward Branch of the Brewer-Dobson Circulation Quantified by Tropical Stratospheric Water Vapor and Carbon Monoxide Measurements from the Aura Microwave Limb Sounder. By K. Minschwaner et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

A multi-wavelength classification method for polar stratospheric cloud types using infrared limb spectra. By R. Spang et al. in Atmospheric Measurement Techniques Discussions.

Evaluation of UTLS carbon monoxide simulations in GMI and GEOS-Chem chemical transport models using Aura MLS observations. By L. Huang et al. in Atmospheric Chemistry and Physics Discussions.

The impact of lightning on tropospheric ozone chemistry using a new global parametrisation. By D.L. Finney et al. in Atmospheric Chemistry and Physics Discussions.