Prof. Paul Halloran
Affiliations. University of Exeter, Faculty of Environment, Science and Economy, Geography
907
Laver Building, Streatham Campus
University of Exeter, Exeter, UK
Paul Halloran is a Professor in Ocean and Climate Science within the College of Life and Environmental Sciences at the University of Exeter, where he moved in 2013. His research group focuses on the role of the oceans within climate change, particularly biogeochemical cycling, variability, and predictability.
Building on his multi-disciplinary background, Paul’s group tackles questions relating to climate change impacts on society and potential solutions in novel ways. Paul obtained his undergraduate degree and PhD in the Department of Earth Sciences, Oxford, where he worked with Prof. Ros Rickaby to examine ENSO change over the Pliocene, develop new geochemical climate proxy techniques, and study the effects of ocean acidification on calcifying phytoplankton.
After his PhD, Paul joined the Met Office Hadley Centre , where he worked as a scientist and later senior scientist in ocean biogeochemical modeling. He contributed significantly to the development and application of the Earth System Model HadGEM2-ES, investigating biogeochemical feedbacks, aerosol impacts, and system reversibility.
selected publications
- SeaCURE Report Phase 2 Public Facing Final Report2026
- Cool La Niña during the warmth of the Pliocene?Science, 2005
- The impacts of Direct Ocean Carbon Capture and Storage (DOCCS) discharge on marine organismsIn American Geophysical Union, Ocean Sciences Meeting, 2026
- Seawater carbonate chemistry based carbon dioxide removal: towards commonly agreed principles for carbon monitoring, reporting, and verificationFrontiers in Climate, 2025
- Phytoplankton calcification in a high-CO2 worldscience, 2008
- Aerosols implicated as a prime driver of twentieth-century North Atlantic climate variabilityNature, 2012