A selection of new science articles from the past week of interest to the SPARC community (a SPARC Office choice).
Improving Background-Error Covariances in a 3D Ensemble-Variational Data Assimilation System for Regional NWP. By J-F. Caron et al. in the Monthly Weather Review.
The mechanisms leading to a stratospheric hydration by overshooting convection. By T. Dauhut et al. in the Journal of the Atmospheric Sciences.
The MIPAS/Envisat climatology (2002–2012) of polar stratospheric cloud volume density profiles. By M. Höpfner et al. in Atmospheric Measurement Techniques.
Shape of Atlantic Tropical Cyclone Tracks and the Indian Monsoon. By P. Kelly et al. in the Geophysical Research Letters.
On the Seasonal Evolution and Impacts of Stratosphere‐Troposphere Coupling in the Southern Hemisphere. By E.-P. Lim, H.H. Handon, and D.W.J. Thompson in the Journal of Geophysical Research: Atmospheres.
Verification of an approximate thermodynamic equation with application to study on Arctic stratospheric temperature changes. By R. Liu and Y. Fu in the Journal of the Atmospheric Sciences.
Role of Finite-Amplitude Eddies and Mixing in the Life Cycle of Stratospheric Sudden Warmings. By S.W. Lubis, C.S.Y. Huang, and N. Nakamura in the Journal of the Atmospheric Sciences.
Radiosondes show that after decades of cooling the lower stratosphere is now warming. By R. Philipona et al. in the Journal of Geophysical Research: Atmospheres.
Volcanic radiative forcing from 1979 to 2015. By A. Schmidt et al. in the Journal of Geophysical Research: Atmospheres.
A Tropical Stochastic Skeleton Model for the MJO, El Niño, and Dynamic Walker Circulation: A Simplified GCM. By S. Thual, A.J. Majda, and N. Chen in the Journal of the Climate.
Mesoscale circulations and organized convection in African Easterly Waves. By L. Tomassini in the Journal of the Atmospheric Sciences.
Discussion papers – open for comment:
The influence of mixing on stratospheric circulation changes in the 21st century. By R. Eichinger et al. in Atmospheric Chemistry and Physics.
The importance of interactive chemistry for stratosphere–troposphere–coupling. By S. Haase and K. Matthes in Atmospheric Chemistry and Physics.
Influence of Arctic Stratospheric Ozone on Surface Climate in CCMI models. By O. Harari et al. in Atmospheric Chemistry and Physics.
Indications for a potential synchronization between the phase evolution of the Madden-Julian oscillation and the solar 27-day cycle. By C.G. Hoffmann and C. von Savigny in Atmospheric Chemistry and Physics.
The global overturning diabatic circulation of the stratosphere as a metric for the Brewer-Dobson Circulation. By M. Linz et al. in Atmospheric Chemistry and Physics.