Investigating mixotrophy in Antarctic cycles
MACS looks at Antarctica’s rapidly changing seasonal sea ice. As the planet warms microalgae growing in ice and water are affected and this, in turn, affects our climate system.
Professor Michael Meredith is an oceanographer and Science Leader at the British Antarctic Survey (BAS) in Cambridge, UK, and Professorial Fellow in Oceanography at Murray Edwards College, University of Cambridge. He is head of the Polar Oceans team at BAS, which has research foci on determining the role of the polar oceans on global climate, the ice sheets, and the interdisciplinary ocean system. He is a Fellow of the Royal Geographical Society, and a NERC Individual Merit Promotion (Band 2) scientist. He has published more than 200 papers in international journals, and was the inaugural chair of the Southern Ocean Observing System. He led the design and delivery of the multi-institute, £10M ORCHESTRA programme, which is unravelling the role of the Southern Ocean in controlling global climate. He was recently Coordinating Lead Author for the IPCC Special Report on Oceans and Cryosphere in a Changing Climate.
In 2018, Michael was awarded the Tinker-Muse Prize for Science and Policy in Antarctica, in recognition of his contributions to the study of the Southern Ocean and its global impacts, and the Challenger Medal, for exceptional contributions to Marine Science. In 2020, he was awarded the Polar Medal. In 2021, Michael was elected to serve as President of the Challenger Society for Marine Science, the UK’s pre-eminent learned body for research of the ocean.
For more information about the science that Michael does, please read this article in the Cambridge Independent newspaper, or watch this presentation delivered at the California Institute of Technology.
In numbers:-
Journal papers: 200+
Citations: 20,000+
H-index: 70+
Career research income: >£17M
Research expeditions: 17 (5 as Principal Scientist)
Professional experience:-
2009 – present: Science Leader, British Antarctic Survey, Cambridge, U.K.
2022 – present: Professorial Fellow in Oceanography, Murray Edwards College, University of Cambridge, U.K.
2020 – present: NERC Individual Merit Promotion 2.
2020 – present: Honorary Professor, School of Earth Sciences, University of Bristol, U.K.
2012 – 2020: NERC Individual Merit Promotion 3.
2013 – present: Professor, UHI. Scottish Association for Marine Science, Oban, U.K.
2014 – 2016: Deputy Director of Science, British Antarctic Survey, Cambridge, U.K.
2004 – 2009: Head of Atmosphere & Ocean Group (UG7), British Antarctic Survey, Cambridge, U.K.
2002 – 2004: Senior Scientific Officer, Proudman Oceanographic Laboratory, U.K.
2000 – 2002: Senior Scientific Officer, British Antarctic Survey, Cambridge, U.K.
1999 – 2000: NERC Research Fellow, University of East Anglia, Norwich, U.K.
1995 – 1999: Senior Research Associate, University of East Anglia, Norwich, U.K.
Education:-
1992-1995, Ph.D., University of East Anglia, UK. (CASE studentship with Proudman Oceanographic Lab., Bidston, UK). Thesis: “On the temporal variability of the transport through Drake Passage”
1990-1991, M.Sc., Oceanography, University of Southampton, UK. John Raymont Memorial Prize for best Masters’ degree performance.
1987-1990, B.Sc.(Hons), Physics, University of Southampton, UK.
The role of the polar oceans in large-scale climate variability.
Physical forcing of the marine ecosystem, and bio-physical interaction in the Southern Ocean.
Climatic changes in Southern Ocean properties, circulation and fluxes.
Dynamics and variability of the Antarctic Circumpolar Current and Southern Ocean overturning.
The use of geochemical tracers in oceanography.
The Arctic Ocean freshwater budget.
Emerging technologies and their use in ocean observing systems.
&c.
Current/Recent Projects
(200+ journal papers published; 20,000+ citations; H-index 70+. Citation details available on Google Scholar; many preprints available on ResearchGate)
Selected Recent Publications
Zhou, S., A. Meijers, M.P. Meredith, E.P. Abrahamsen, P.R. Holland, A. Silvano, J.-B. Sallée and S. Østerhus. “A multidecadal decline in the densest water exported from the Weddell Sea, Antarctica, forced by wind-driven sea ice changes”. Nature Climate Change, 10.1038/s41558-023-01695-4, 2023.
Venables, H.J., M.P. Meredith, K. Hendry, P. ten Hoopen, H. Peat, A. Chapman, J. Beaumont, R. Piper, A. Miller, P. Mann, H. Rossetti, A. Massey, T. Souster, S. Reeves, M. Fenton, S. Heiser, S. Pountney, S. Reed, Z. Waring, M. Clark, E. Bolton, R. Mathews, H. London, A. Clement, E. Stuart, A. Reichardt, M. Brandon, M. Leng, C. Arrowsmith, A. Annett, S. Henley and A. Clarke. “Sustained, year-round oceanographic measurements from Rothera Research Station, Antarctica, 1997-2017”. Nature Scientific Data, 10, 265, 10.1038/s41597-023-02172-5, 2023.
Meredith, M.P., M.E. Inall, J.A. Brearley, T. Ehmen, K. Sheen, D. Munday, A. Cook, K. Retallick, K. Van Landeghem, L. Gerrish, A. Annett, F. Carvalho, R. Jones, A.C. Naveira Garabato, C.Y.S. Bull, B.J. Wallis, A.E. Hogg and J. Scourse. “Internal tsunamigenesis and ocean mixing driven by glacier calving in Antarctica”. Science Advances, 8, 47, 10.1126/sciadv.add0720, 2022
Jones, R., Annett, A., Sherrell, R., Flanagan, O., Woodward, M., Meredith, M., Scourse, J., & Lohan, M. (2025). Surface seawater concentration data collected from the West Antarctic Peninsula during the Icebergs 3 JR19002 cruise in January 2020 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/deaec6fa-9654-426d-ba67-756776b25cd7
Clarke, A., Meredith, M., Venables, H., Hendry, K., Peat, H., ten Hoopen, P., Brandon, M., Henley, S., Annett, A., Leng, M., Arrowsmith, C., Chapman, A., Beaumont, J., Piper, R., Miller, A., Mann, P., Rossetti, H., Massey, A., Souster, T., … Clement, A. (2022). Quasi-weekly, year-round oceanographic and ice measurements at the coastal Western Antarctic Peninsula from 1997 to 2018 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/50acb5b7-5b42-44cd-a98e-790bd367f204
Leng, M., Arrowsmith, C., & Meredith, M. (2018). Analysis of d18O and salinity from sea ice and meltwater pool water samples collected in April 2016 in the Weddell Sea and Scotia Sea of the Southern Ocean during the marine survey JR15006 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01103
MACS looks at Antarctica’s rapidly changing seasonal sea ice. As the planet warms microalgae growing in ice and water are affected and this, in turn, affects our climate system.
POLOMINTS investigates how glacier calving triggers internal tsunamis, reshaping polar ocean mixing and influencing climate, ecosystems, and carbon cycling.
PRESCIENT supports long-term, strategically important measurements and capabilities for the wider science community.
The European Space Agency (ESA) Southern Ocean-Ice Shelf Interactions (SO-ICE) project is a collaborative research project bringing together the ESA Polar+ Ice Shelves and 4D Antarctica projects, and the European Commission Southern Ocean Carbon and Heat Impact on Climate (SO-CHIC) project, in order to improve understanding of the processes controlling ice-ocean interactions in Antarctica.
As part of the BAS Polar Oceans team’s long-term monitoring programme, we have been observing this outflow using moored instruments since 2007, in collaboration with Lamont-Doherty Earth Observatory , who have been observing this region since 2004.
SO-CHIC is a European research project investigating how the Southern Ocean regulates global climate through heat and carbon exchanges.
OCEAN:ICE studies how Antarctic ice and Southern Ocean processes drive sea-level rise and influence global climate, using new data and advanced ice–ocean–climate models.
The recent extreme swings in Antarctic sea ice extent emphasise the need to increase our knowledge of the drivers and climate implications of Antarctic sea ice loss.
BIOPOLE studies how climate change is affecting the release of nutrients from the polar regions, and their redistribution around the world’s oceans.
Understanding the Ocean Regulation of Climate by Heat, Carbon Sequestration and Transports
DynOPO investigated the flow of Antarctic Bottom Water through the Orkney Passage, a submarine valley connecting the Atlantic Ocean to the Weddell Sea. The project tested whether winds over the Weddell Sea regulate the volume and temperature of this deep, cold water mass by altering turbulent mixing.
Understanding Antarctic Bottom Water (AABW) and its affect on global ocean circulation.
As the Arctic sea ice minimum approaches this month, we share a blog from Professor Mike Meredith at British Antarctic Survey about how the region is rapidly changing in our […]
Scientists have collected measurements close to a giant iceberg, giving an unprecedented window into the impact of meltwater on the surrounding Southern Ocean and ecosystem.
An international research team, led by British Antarctic Survey (BAS), has been awarded £3.7M to advance a ground-breaking study on how underwater tsunamis are triggered by glacier calving around Antarctica.
The Royal Society Publishing Photography Competition celebrates the power of photography in capturing scientific phenomena happening all around us, and the role great images play in making science accessible to a wide audience.
Leading UK climate science organisations are driving forwards a national alliance focused on climate solutions for society, led by new co-directors including Professor Michael Meredith from British Antarctic Survey.
Scientists are warning that apparently stable glaciers in Antarctica can change rapidly and lose large quantities of ice as a result of warmer oceans.
A series of studies on the Southern Ocean, which encircles Antarctica, reveal how it is changing. A special issue of the Journal Proceedings of the Royal Society, led by the […]
Scientists on a research vessel in Antarctica watched the front of a glacier disintegrate and their measurements ‘went off the scale’. As well as witnessing disruptions on the ocean surface, […]
British Antarctic Survey (BAS) scientists will participate in the 27th session of the United National Framework Convention on Climate Change Conference of Parties (COP27), hosted by the Arab Republic of […]
In 2011, Frozen Planet gave BBC viewers an unprecedented insight into life in the Poles. The final episode featured British Antarctic Survey (BAS) glaciologist Dr Andy Smith using explosives to […]
A new report by the UN Intergovernmental Panel on Climate Change (IPCC) published today (28 February) has outlined the causes, impacts and solutions to climate change.
New research by scientists at British Antarctic Survey and Bielefeld University explains how the chaotic formation of genetic islands can occur in marine molluscs. Usually, the individuals of a population […]
Warming water and receding sea ice in the Western Antarctic Peninsula is changing the local plankton community with potential consequences for climate change, according to an international team of researchers. […]
CAMBRIDGE: British Antarctic Survey welcomes the publication of the Intergovernmental Panel on Climate Change (IPCC) Working Group 1 component of its Sixth Assessment Report. This assessment brings together the latest advances in […]
BAS researchers have contributed to a new briefing paper about the Arctic published this week (25 June 2020). Working with a team at the Grantham Institute at Imperial College London, […]
Two British Antarctic Survey (BAS) staff have been awarded the Polar Medal, and one member of staff has been awarded a prestigious Second Clasp. The announcement was published in the […]
If you would like to hear more about the recent IPCC special reports on Oceans and Cryosphere in a Changing Climate and Climate change and Land Use, come to our panel discussion on Thursday 28 November. You will hear short summaries of the reports and join in the debate.
MONACO: Hundreds of scientists and Government representatives met in Monaco this week to finalise the new Intergovernmental Panel on Climate Change Special Report on the Ocean and Cryosphere in a […]
The debut mission involving the autonomous submarine Autosub Long Range – affectionately known as Boaty McBoatface – has for the first time shed light on a key process linking increasing […]
The prestigious Challenger Medal for excellence in marine science has been awarded to British Antarctic Survey (BAS) oceanographer Professor Mike Meredith. Presented every two years by the Challenger Society – […]
Report published July 2018
The seas around the Antarctic Peninsula are biologically extremely rich, but are climatically sensitive, having experienced some of the fastest warming globally in recent decades. A special issue of the […]
Professor Mike Meredith wins prize
The Intergovernmental Panel on Climate Change (IPCC) has selected Professor Mike Meredith from British Antarctic Survey (BAS) to be a coordinating lead author for a Special Report on the Ocean […]
The unmanned submersible Boaty McBoatface was deployed in the Antarctic for the first time.
Interactions of ocean and atmosphere
A new study has found for the first time that ocean warming is the primary cause of retreat of glaciers on the Antarctic Peninsula. The Peninsula is one of the largest current contributors to sea-level rise and this new finding will enable researchers to make better predictions of ice loss from this region.
Oceanographers discover ‘Taylor columns’ are widespread in Southern Ocean according to new research published recently in the Journal of Geophysical Research Lead author Professor Mike Meredith, a Senior Oceanographer at […]
Antarctic sea-level rising faster than global rate A new study of satellite data from the last 19 years reveals that fresh water from melting glaciers has caused the sea-level around […]
The Southern Ocean: new insights into circulation, carbon and climate A special issue of the Philosophical Transactions of the Royal Society A has been published today (Monday 2 June) which […]
New polar research ship for UK Chancellor of the Exchequer, the Rt Hon George Osborne MP announced this week (Friday 25 April 2014) that the Government has earmarked more than […]
New research sheds light on history of polar current Research conducted by a team that included scientists from British Antarctic Survey reveals the ocean current moving around the South Pole […]
Honorary Professorship for BAS polar ocean expert Michael Meredith Polar ocean expert, Michael Meredith, has been made an honorary Professor by the University of the Highlands and Islands. The professorship […]
Professor Michael Meredith joins the Scottish Association for Marine Science Eminent Antarctic oceanographer, Professor Michael Meredith this week joined the staff at the Scottish Association for Marine Science (SAMS) on […]
The papers are: CLARKE A. & GASTON K.J. 2006. Climate, energy and diversity. Proceedings of the Royal Society of London Series B, 273, 2257–2266. This is a very important paper […]