SPARC Science update: 25 September – 1 October

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


North American Weather Regimes Are Becoming More Persistent: Is Arctic Amplification a Factor? By J.A. Francis, N. Skific, and S.J. Vavrus in the Geophysical Research Letters.

Gravitational separation of the stratospheric air over Syowa, Antarctica and its connection with meteorological fields. By S. Ishidoya et al. in the Atmospheric Science Letters.

Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation. By M.-J. Kang et al. in the Journal of the Atmospheric Sciences.

Prediction of the Madden-Julian Oscillation: A Review. By H. Kim, F. Vitart and D.E. Waliser in the Journal of the Climate.

The circulation response to resolved versus parametrized orographic drag over complex mountain terrains. By A. van Niekerk, I. Sandu, and S. Vosper in the Journal of Advances in Modeling Earth Systems.

Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies. By M. Rapp, A. Dörnbrack and P. Preusse in the Geophysical Research Letters.

Effect of upper- and lower-level baroclinicity on the persistence of the leading mode of midlatitude jet variability. By L. Robert, G. Rivière and F. Codron in the Journal of the Atmospheric Sciences.

Dynamics and predictability of the El Niño-Southern Oscillation: An Australian perspective on progress and challenges. By A. Santoso et al. in the Bulletin of the American Meteorological Society.

Comparison of Subseasonal‐to‐Seasonal Model Forecasts for Major Stratospheric Sudden Warmings. By M. Taguchi in the Journal of Geophysical Research: Atmospheres.

How well do stratospheric reanalyses reproduce high-resolution satellite temperature measurements? By C.J. Wright and N.P. Hindley in Atmospheric Chemistry and Physics.

Full Access On the Choice of Momentum Control Variables and Covariance Modeling for Mesoscale Data Assimilation. By Q. Xu in the Journal of the Atmospheric Sciences.