Editor’s note: Greg McFarquhar, director of the University of Oklahoma’s Cooperative Institute for Mesoscale Meteorological Studies and principal investigator for the Measurements of Aerosols, Radiation, and Clouds over the Southern Ocean (MARCUS) campaign, sent this update. Here I am on the Aurora Australis supply vessel in Hobart, Australia, before its voyage to the Antarctic. All instruments…

Editor’s note: Greg McFarquhar, a professor of atmospheric sciences at the University of Illinois at Urbana-Champaign and principal investigator (PI) for the Measurements of Aerosols, Radiation, and Clouds over the Southern Ocean (MARCUS) campaign, sent this update. I recently visited the Aurora Australis supply vessel with fellow MARCUS PIs Roj Marchand from the University of Washington…