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

Synoptic-scale zonal available potential energy increases in the Northern Hemisphere. By K.A. Bowley E.H. Atallah, and J.R. Gyakum in the Journal of the Atmospheric Sciences.

Stratospheric aerosol radiative forcing simulated by the chemistry climate model EMAC using aerosol CCI satellite data. By C. Brühl et al. in Atmospheric Chemistry and Physics.

Historical Tropospheric and Stratospheric Ozone Radiative Forcing Using the CMIP6 Database. By R. Checa‐Garcia et al. in the Geophysical Research Letters.

GRACILE: a comprehensive climatology of atmospheric gravity wave parameters based on satellite limb soundings. By M. Ern et al. in Earth System Science Data.

A systematic wavelet-based exploratory analysis of climatic variables. By M. Gallegati in Climatic Change.

Multidecadal fluctuation of the wintertime Arctic Oscillation pattern and its implication. By H. Gong et al. in the Journal of Climate.

The early 20th century warming: Anomalies, causes, and consequences. By G.C. Hegerl et al. in Wiley Interdisciplinary Reviews: Climate Change.