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Nested Timescales of Antarctic Climate Change from Sedimentary Archives and Satellite Imagery

Ronne Entrance in the Bellingshausen Sea where sediment cores were collected in 2025. Surveys were completed days after a major iceberg calving event (imaged), yielding the first observations of an intact sub-ice shelf environment across ~350 km² of newly exposed seafloor.
Project Description

This interdisciplinary PhD project investigates recent and historical climate change in West Antarctica by integrating sediment core analysis with satellite remote sensing. The student will analyse newly collected sediment cores from the Bellingshausen Sea, obtained during the FKt250110 “Climate Connections at the Ice–Sea Interface” expedition. These cores offer a rare opportunity to reconstruct environmental conditions over centennial timescales and will be processed in UCL Geography’s state-of-the-art laboratories. 

To complement this palaeoenvironmental record, remote sensing data, for example from the Sentinel satellites, will be used to explore modern ice-shelf and sea-ice dynamics, sediment transport, and their relationship to atmospheric and oceanic changes. Observational meteorological and reanalysis data will support interpretation of satellite signals and sediment deposition processes. 

By combining long-term sediment records with high-resolution satellite data, this project aims to bridge the gap between modern observations and the deeper-time environmental history of the region. The integration of methods will provide insight into the drivers of recent change and the potential for cascading impacts on Antarctic and Southern Ocean systems. 

The research will contribute to understanding Antarctica’s response to a warming climate, with high relevance for global sea-level rise and climate feedbacks. 

Research themes
Project Specific Training

The student will develop essential skills in Python programming for the processing, analysis, and visualisation of satellite remote sensing data. Training will be provided through structured online courses (e.g., Copernicus tutorials, ESA resources, or Coursera/MOOC platforms), with no direct financial cost. Additional training in sediment analysis techniques (e.g., diatom taxonomy, biomarker extraction) will be provided through in-house supervision and specialist workshops (e.g., BOSCORF). The student will also be encouraged to engage with the range of UCL topic groups (such as Ocean Atmosphere and Cryosphere Dynamics) for broader skill development. 

Potential Career Trajectory

This interdisciplinary project equips the student with a broad skill set applicable to both academic and non-academic careers. Laboratory training (e.g., microfossil identification, biomarker analysis, sedimentary geochemistry) prepares the student for roles in academia as well as environmental or climate science laboratories. Remote sensing and Python programming skills open pathways into Earth Observation roles in governmental agencies (e.g., ESA, NASA), NGOs, or the private sector (e.g., climate risk consulting, satellite data analytics). The project’s relevance to climate change and Antarctic systems also positions the student for careers in science communication, policy, and international environmental organisations. 

Project supervisor/s
Aleksandr Montelli
Geography
University College London
s.montelli@ucl.ac.uk
Rosemary Willatt
Earth Sciences
University College London
r.willatt@ucl.ac.uk