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

Afro-Eurasian Intermediate-Frequency Teleconnection and Modulation by ENSO. By S. He et al. in the Journal of the Climate.

Impact of Convective Gravity Waves on the Tropical Middle Atmosphere During the Madden‐Julian Oscillation. By S. Kalisch, M.‐J. Kang, and H.‐Y. Chun in the Journal of Geophysical Research: Atmospheres.

A Parameterization of Turbulent‐scale and Mesoscale Orographic Drag in a Global Atmospheric Model. By M.-S. Koo, H.-J. Choi, and J.-Y. Han in the Journal of Geophysical Research: Atmospheres.

Resolving Future Arctic/Midlatitude Weather Connections. By J.E. Overland and M. Wang in Earth’s Future.

Polar stratospheric cloud climatology based on CALIPSO spaceborne lidar measurements from 2006 to 2017. By M.C. Pitts, L.R. Poole, and R. Gonzalez in Atmospheric Chemistry and Physics.

Trapped Gravity Waves and their Association with Turbulence in a Large Thunderstorm Anvil during PECAN. By S.B. Trier and R.D. Sharman in the Monthly Weather Review.