SPARC Science Update: 23 July – 5 August

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

A multi-model intercomparison of halogenated very short-lived substances (TransCom-VSLS): linking oceanic emissions and tropospheric transport for a reconciled estimate of the stratospheric source gas injection of bromine. By R. Hossaini et al. in Atmospheric Chemistry and Physics.

The QBO, Gravity Waves Forced by Tropical Convection, and ENSO. By M.A. Geller et al. in the Journal of Geophysical Research: Atmospheres.

Impact of the January 2012 solar proton event on polar mesospheric clouds. By C.G. Bardeen et al. in the Journal of Geophysical Research: Atmospheres.

Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region. By D.A. Newnham et al. in Atmospheric Measurement Techniques.

Upper-tropospheric CO and O3 budget during the Asian summer monsoon. By B. Barret et al. in Atmospheric Chemistry and Physics.

Tropopause Sharpening by Data Assimilation. By R. Pilch Kedzierski in Geophysical Research Letters.

Investigating possible Arctic – midlatitude teleconnections in a linear framework. By R. Sellevold et al. in the Journal of Climate.

Convection generated high frequency gravity waves as observed by MST radar and simulated by WRF model over the Indian tropical station of Gadanki. By P. Ghosh et al. in the Quarterly Journal of the Royal Meteorological Society.

MIPAS IMK/IAA CFC-11 (CCl3F) and CFC-12 (CCl2F2) measurements: accuracy, precision and long-term stability. By E. Eckert et al. in Atmospheric Measurement Techniques.

Robust response of the Amundsen Sea Low to stratospheric ozone depletion. By M.R. England et al. in Geophysical Research Letters.

Spectroscopic evidence of large aspherical β-NAT particles involved in denitrification in the December 2011 Arctic stratosphere. By W. Woiwode et al. in Atmospheric Chemistry and Physics.

Stratospheric gravity waves at Southern Hemisphere orographic hotspots: 2003–2014 AIRS/Aqua observations. By L. Hoffmann et al. in Atmospheric Chemistry and Physics.

Climate impacts of geoengineering in a delayed mitigation scenario. By S. Tilmes et al. in Geophysical Research Letters.

Asymmetry and nonlinearity of the influence of ENSO on the northern winter stratosphere. Part I: Observations. By J. Rao and R. Ren in the Journal of Geophysical Research: Atmospheres.

Asymmetry and nonlinearity of the influence of ENSO on the northern winter stratosphere. Part II: Model study with WACCM. By J. Rao and R. Ren in the Journal of Geophysical Research: Atmospheres.

Reassessing properties and radiative forcing of contrail cirrus using a climate model. By L. Bock and U. Burkhardt in the Journal of Geophysical Research: Atmospheres.

Validation of Aura MLS retrievals of temperature, water vapour and ozone in the upper troposphere and lower–middle stratosphere over the Tibetan Plateau during boreal summer. By X. Yan et al. in Atmospheric Measurement Techniques.

Regional and global temperature response to anthropogenic SO2 emissions from China in three climate models. By M. Kasoar et al. in Atmospheric Chemistry and Physics.

A potential-vorticity-based index for the East Asian winter monsoon. By W. Huang et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

The major stratospheric final warming in 2016: Dispersal of vortex air and termination of Arctic chemical ozone loss. By G.L. Manney and Z.D. Lawrence in Atmospheric Chemistry and Physics Discussions.

Harmonization and Diagnostics of MIPAS ESA CH4 and N2O Profiles Using Data Assimilation. By Q. Errera et al. in Atmospheric Measurement Techniques Discussions.

STEFLUX, a tool for investigating stratospheric intrusions: application to two WMO/GAW global stations. By D. Putero et al. in Atmospheric Chemistry and Physics Discussions.

Introduction to the SPARC Reanalysis Intercomparison Project (S-RIP) and overview of the reanalysis systems. By M. Fujiwara et al. in Atmospheric Chemistry and Physics Discussions.

Multi-model simulations of aerosol and ozone radiative forcing for the period 1990–2015. By G. Myhre et al. in Atmospheric Chemistry and Physics Discussions.

Tropospheric observations of CFC-114 and CFC-114a with a focus on long-term trends and emissions. By J.C. Laube et al. in Atmospheric Chemistry and Physics Discussions.