SPARC Science Update: 16-22 July

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

A three-dimensional analysis on the role of atmospheric waves in the climatology and interannual variability of stratospheric final warming in the Southern Hemisphere. By S. Harano et al. in the Journal of Geophysical Research: Atmospheres.

Effect of tropical cyclones on the stratosphere-troposphere exchange observed using satellite observations over the north Indian Ocean. By M. Venkat Ratnam et al. in Atmospheric Chemistry and Physics.

A semi-empirical model for mesospheric and stratospheric NOy produced by energetic particle precipitation. By B. Funke et al. in Atmospheric Chemistry and Physics.

Interannual variability of the boreal summer tropical UTLS in observations and CCMVal-2 simulations. By M. Kunze et al. in Atmospheric Chemistry and Physics.

How stratospheric are deep stratospheric intrusions? LUAMI 2008. By T. Trickl et al. in Atmospheric Chemistry and Physics.

Retrieval of Ozone Profiles from Geostationary Infrared Sounder Observations using Principal Component Analysis. By P. Jindal et al. in the Quarterly Journal of the Royal Meteorological Society.

Longitudinal Asymmetric Trends of Tropical Cold-point Tropopause Temperature and Their Link to Strengthened Walker Circulation. By D. Hu et al. in the Journal of Climate.

Influence of tropical Pacific sea surface temperature on the genesis of Gulf Stream cyclones. By S. Schemm et al. in the Journal of the Atmospheric Sciences.

Discussion papers – open for comment

Evidence of horizontal and vertical transport of water in the Southern Hemisphere Tropical Tropopause Layer (TTL) from high-resolution balloon observations. By S.M. Khaykin et al. in Atmospheric Chemistry and Physics Discussions.

Influence of enhanced Asian NOx emissions on ozone in the Upper Troposphere and Lower Stratosphere (UTLS) in chemistry climate model simulations. By C. Roy et al. in Atmospheric Chemistry and Physics Discussions.

Influence of the spatial distribution of gravity wave activity on the middle atmospheric circulation and transport. By P. Šácha et al. in Atmospheric Chemistry and Physics Discussions.

Tropical temperature variability and Kelvin wave activity in the UTLS from GPS RO measurements. By B. Scherllin-Pirscher et al. in Atmospheric Chemistry and Physics Discussions.

CFC-11, CFC-12 and HCFC-22 ground-based remote sensing FTIR measurements at Reunion Island and comparisons with MIPAS/ENVISAT data. By M. Zhou et al. in Atmospheric Measurement Techniques Discussions.