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Ocean and Earth Science, National Oceanography Centre Southampton
(023) 8059 6110

Professor Toby Tyrrell BSc, MSc, PhD

Professor in Earth System Science

Professor Toby Tyrrell's photo
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Professor Toby Tyrrell is Professor in Earth System Science within Ocean and Earth Science, National Oceanography Centre Southampton at the University of Southampton.

BSc Civil Engineering, Southampton University (1988)
MSc Artificial Intelligence, Edinburgh University (1989)
PhD Edinburgh University (1993)

Fellow of the Challenger Society for Marine Science
Member of the American Geophysical Union
Fellow of the Geological Society






Research interests

Specialism: Ocean acidification

How organisms interact with their environments. Ecology of phytoplankton, coccolithophores in particular. Ocean acidification. Ocean biogeochemistry, including during extreme events in Earth’s ancient past such as the E/O and K/T boundaries. Ocean carbon cycle and its effect on future atmospheric CO2 levels. Marine cycles of N, P, C, Si. The control of biogenic element concentrations in the sea as a function of ecological competition between different functional groups of phytoplankton.

PhD Supervision

Dave Mackay, Claudia Fry, Christopher Daniels, Matthew Humphreys, Pippa Hayes, Lucie Munns, Kyle Mayers, Charlotte Walker, Jennifer Clarke.

Research group(s)

Marine Biogeochemistry

Research project(s)

UK ocean acidification impacts on the surface ocean (UKOARP)

Swire NOCS Ocean Monitoring System (SNOMS)

Past and Present Ocean Acidification

Understanding changes in Cenozoic carbonate chemistry

RAGNARoCC: Radiatively active gases from the North Atlantic Region and Climate Change

Head of Marine Biogeochemistry Group
Leader of NOCS Beacon Theme on Ocean Acidification
Coordinator of the sea-surface consortium, a major component (>£3m, 10 partner institutions) of the United Kingdom Ocean Acidification Research Programme.


Tyrrell, Toby (2013) On Gaia: A Critical Investigation of the Relationship between Life and Earth, Princeton, US, Princeton University Press, 312pp..



Book Section(s)

  • Coccolithophores - Tyrrell, T. and Young, J.R.. In Encyclopedia of Ocean Sciences, 2nd ed. - Steele, John H., Turekian, Karl K. and Thorpe, Steve A. (eds.)
    Published by:
    San Diego, US
    Page Range:
  • Biotic plunder: control of the environment by biological exhaustion of resources - Tyrrell, T.. In Scientists debate Gaia: the next Century - Schneider, S.H., Miller, J.R., Crist, E. and Boston, P.J. (eds.)
    Published by:
    Cambridge MA, USA
    Page Range:
  • Emiliania huxleyi: bloom observations and the conditions that induce them - Tyrrell, T. and Merico, A.. In Coccolithophores: from molecular processes to global impact - Thierstein, H.R. and Young, J.R. (eds.)
    Published by:
    Berlin, Germany
    Page Range:
  • Redfield ratio - Tyrrell, T.. In Encyclopedia of Ocean Sciences - Steele, John H., Thorpe, Steve A. and Turekian, Karl K. (eds.)
    Published by:
    San Diego, USA
    Page Range:


Coordinator of SOES3011 Biogeochemical Cycles in the Earth System
Coordinator of SOES3042 Computational Data Analysis

Professor Toby Tyrrell
Ocean and Earth Science, National Oceanography Centre Southampton University of Southampton Waterfront Campus European Way Southampton SO14 3ZH United Kingdom

Room Number: NOCS/164/05

Telephone: (023) 8059 6110
Facsimile: (023) 8059 3059

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