A selection of new science articles from the past week of interest to the SPARC community (a SPARC Office choice).
Role of Finite-Amplitude Rossby Waves and Nonconservative Processes in Downward Migration of Extratropical Flow Anomalies. By S.W. Lubis, C.S.Y. Huang, and N. Nakamura in the Journal of the Atmospheric Sciences.
Recently amplified arctic warming has contributed to a continual global warming trend. By J. Huang et al. in Nature Climate Change.
Current sources of carbon tetrachloride (CCl4) in our atmosphere. By D. Sherry et al. in the Environmental Research Letters.
An intercomparison of stratospheric gravity wave potential energy densities from METOP GPS radio occultation measurements and ECMWF model data. By M. Rapp et al. in Atmospheric Measurement Techniques.
Optimizing the Definition of a Sudden Stratospheric Warming. By A.H. Butler and E.P. Gerber in the Journal of Climate.
Lower-stratospheric control of the frequency of sudden stratospheric warming events. By P. Martineau et al. in the Journal of Geophysical Research: Atmospheres.
The Role of Zonal Asymmetry in the Enhancement and Suppression of Sudden Stratospheric Warming Variability by the Madden–Julian Oscillation. By W. Kang and E. Tziperman in the Journal of Climate.
On the interaction of observation and prior error correlations in data assimilation. By A.M. Fowler, S.L. Dance, and J.A. Waller in the Quarterly Journal of the Royal Meteorological Society.
On the reproducibility of the September 2002 vortex splitting event in the Antarctic stratosphere achieved without satellite observations. By S. Noguchi and C. Kobayashi in the Quarterly Journal of the Royal Meteorological Society.
Synoptic Formation of Double Tropopauses. By C. Liu and E. Barnes in the Journal of Geophysical Research: Atmospheres.
On the Climate Impacts of Upper Tropospheric and Lower Stratospheric Ozone. By Y. Xia, Y. Huang, and Y. Hu in the Journal of Geophysical Research: Atmospheres.
MJO-Related Intraseasonal Variation in the Stratosphere: Gravity Waves and Zonal Winds. By M.J. Alexander et al. in the Journal of Geophysical Research: Atmospheres.
Discussion papers – open for comment
Impact of tropical lower stratospheric cooling on deep convective activity: (I) Recent trends in tropical circulation. By K. Kodera et al. in Atmospheric Chemistry and Physics Discussions.