SPARC Science Update: 22-28 July

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

Investigation on the abnormal quasi-two day wave activities during sudden stratospheric warming period of January 2006. By S.-Y. Gu et al. in Atmospheric Chemistry and Physics.

Understanding the timescales of the tropospheric circulation response to abrupt CO2 forcing in the Southern Hemisphere: Seasonality and the role of the stratosphere. By K.M. Grise and L.M Polvani in the Journal of Climate.

Remarkable separability of circulation response to Arctic sea ice loss and greenhouse gas forcing. By K.E. McCusker et al. in Geophysical Research Letters.

Classifying the tropospheric precursor patterns of sudden stratospheric warmings. By M. Bao et al. in Geophysical Research Letters.

Retrieval of volcanic SO2 from HIRS/2 using optimal estimation. By G.M. Miles et al. in Atmospheric Measurement Techniques.

Global atmospheric chemistry – which air matters. By M.J. Prather et al. in Atmospheric Chemistry and Physics.

OMI-measured increasing SO2 emissions due to energy industry expansion and relocation in northwestern China. By Z. Ling et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

Retrieving Vertical Ozone Profiles from Measurements of Global Spectral Irradiance. By G. Bernhard et al. in Atmospheric Measurement Techniques Discussions.

Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO. By V. Silverman et al. in Atmospheric Chemistry and Physics Discussions.

Intraseasonal to interannual variability of Kelvin wave momentum fluxes as derived from high-resolution radiosonde data. By J.P. Sjoberg et al. in Atmospheric Chemistry and Physics Discussions.