Summary
AIRBOX, a mobile air chemistry laboratory was deployed on the Australian ice-breaker, the RSV Aurora Australis for the 2018/2019 Antarctic resupply voyages. A comprehensive suite of atmospheric chemistry observations were made from ozone, mercury, CN, CCN, Nephelometer, MAAP, and radon in-situ monitors, alongside air filter, eddy covariance flux, sea-state cameras, MAX-DOAS, miniMPL, CIMS, NAIS and ACSM instruments. The voyages occurring from October 2018 to late March 2019 resupplied the Australian bases of Davis (68.6oS, 78.0oE), Casey (66.2oS, 110.5oE), Mawson (67.6oS, 62.87oE), and Macquarie Island (54,6oS, 158.9oE) returning between each voyage to Hobart (42.9oS, 147.3oE) in Tasmania, Australia. The atmospheric chemistry measurements of 2018/2019 built on the mercury and MAXDOAS observations deployed concurrently for 2017/2018 resupply season where the ARM facility was on the Aurora Australis. We present preliminary results exploring case studies of the aerosol number and composition across the atmospheric polar front region and linking sea-state to aerosol composition for this vastly under-sampled region. We show some initial model-observation comparisons using ACCESS – the Australian climate model based on the Unified Model of the UK Meteorological Office.