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

Facility for Weather and Climate Assessments (FACTS): A Community Resource for Assessing Weather and Climate Variability. By D. Murray et al. in the Bulletin of the American Meteorological Society.

Discussion Papers – open for comment:

Stratospheric aerosol layer perturbation caused by the 2019 Raikoke and Ulawun eruptions and climate impact. By C. Kloss et al. in Atmospheric Chemistry and Physics.

Changes in stratospheric aerosol extinction coefficient after the 2018 Ambae eruption as seen by OMPS-LP and ECHAM5-HAM. By E. Malinina et al. in Atmospheric Chemistry and Physics.

Potential of future stratospheric ozone loss in the mid-latitudes under climate change and sulfate geoengineering. By S. Robrecht et al. in Atmospheric Chemistry and Physics.

Ship- and island-based atmospheric soundings from the 2020 EUREC4A field campaign. By C.C. Stephan et al. in Earth System Science Data.