This PhD studentship at the British Antarctic Survey (BAS) investigates whether the Antarctic ocean microlayer is a significant source of cloud-forming particles, specifically cloud condensation nuclei (CCN) and ice nucleating particles (INP). The project is embedded in the Atmosphere, Ice and Climate (AIC) team at BAS and involves combining aircraft vertical profiles with aerosol measurements from Rothera station to study sea surface aerosol emissions and new particle formation processes. Laboratory experiments will be conducted on sea water and ice samples in the aerosol and trace gas lab at BAS and at the biogeochemistry research centre at the University of Plymouth. There may be opportunities for polar fieldwork at research stations or aboard research vessels. The successful candidate will receive training in atmospheric measurement techniques, fieldwork planning, and will participate in team meetings and the BAS PhD cohort. The project is suitable for candidates with backgrounds in chemistry, physics, maths, environmental science, oceanography, marine science, geography, meteorology, or similar quantitative disciplines, and who are enthusiastic about atmospheric and marine sciences. Programming experience or willingness to learn is desirable. The studentship is fully funded under the UKRI NERC DLA scheme, covering tuition fees, a maintenance stipend (£20,780 p.a. for 2025/26), and a research training and support grant. International applicants are eligible, with the difference between 'home' and 'international' fees waived, though relocation, visa, and health surcharge costs are not covered. ARIES provides additional funding for training, travel, and conferences. The application deadline is 7 January 2026, and the position will commence on 1 October 2026. Applications are encouraged from all backgrounds, and the recruitment process values both academic and non-academic experience. The project offers a safe, inclusive research environment and may be undertaken full-time or part-time, subject to visa conditions. For more information and to apply, visit the University of Plymouth ARIES Doctoral Training Programme website.