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Dr Dafydd Gwyn Evans

Job Title
Research Scientist – Physical Oceanography
Site
Southampton

Biography

Research Interests

  • Physical oceanographer interested in the dynamics of the ocean on a range of spatial and temporal scales.
  • The roles of diabatic and adiabatic process in driving the global overturning circulation using water mass transformation frameworks.
  • Flow-topography interactions and their roles in modulating the global ocean energy budget.
  • Estimating the turbulent dissipation rate from ocean gliders.

Field Experience

  • RAPID Eastern Boundary (PSO) - RRS Discovery : Recovery and deployment of RAPID eastern boundary moorings.
  • MeRMEED (PSO) - R/V Walton Smith: Using microstructure profilers and ocean gliders to measure turbulence where mesocale eddies interact with steep and rough topography. Western subtropical Atlantic, 3 cruises, 2016-2018.
  • DIMES UK4 - RRS James Clark Ross: Vertical microstructure profiler deployment, CTD and mooring deployments. South Atlantic, 2013.
  • BATS and Hydrostation 'S' (PSO) - R/V Atlantic Explorer: CTD, ADCP, deployment of autonomous floats and Lagrangian drifting arrays. Monthly cruises, 2009-2012.
  • Great Belt Cruise - R/V Melville: CTD, DIC/Alkalinity. South Atlantic, 2011. 

Awards

  • University of Southampton faculty of environmental and life sciences Dean’s Award for outstanding contributions in research - 2018.

Links

Committee Memberships

Early Career Scientist representative for the EGU Ocean Sciences Division - 2019-2020

Projects

SNAP-DRAGON - Subpolar North Atlantic Processes - Dynamics and pRedictability of vAriability in Gyre and OverturNing (NOC PI for project extension)

DEFIANT - Drivers and Effects of Fluctuations in sea Ice in the ANTarctic (NOC PI)

CLASS - Climate Linked Atlantic Sector Science WP1.1

MeRMEED - MEchanisms Responsible for Mesoscale Eddy Energy Dissipation 

BATS / Hydrostation 'S' - Bermuda Atlantic Time-series Study

Profile photo

Publications

Authors

Fernández Castro, Bieito; Groeskamp, Sjoerd; Broullón, Espe; Clement, Louis ORCID: https://orcid.org/0000-0002-6935-9455; Evans, D. Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Naveira Garabato, Alberto C.; Williams, Richard G.. 2026 Global Observational Estimates of Thermohaline Transformations by Interior Ocean Mixing. Journal of Physical Oceanography. 10.1175/JPO-D-25-0265.1

Publication year

2026

Publication type

Article

Authors

Savage, Anna C.; Waterhouse, Amy F. ORCID: https://orcid.org/0000-0003-2264-9831; MacKinnon, Jennifer A.; Yu, Xiaolong; Naveira Garabato, Alberto C.; Evans, Dafydd Gwynn ORCID: https://orcid.org/0000-0002-6328-4093; Frajka-Williams, Eleanor; Thomas, Leif N.. 2025 Observations of Upper-Ocean Kinetic Energy Transfers between Near-Inertial Internal Waves and Low-Frequency Dynamics. Journal of Physical Oceanography, 55 (10). 1625-1643. 10.1175/JPO-D-23-0230.1

Publication year

2025

Publication type

Article

Authors

Bennetts, Luke G.; Shakespeare, Callum J.; Vreugdenhil, Catherine A.; Foppert, Annie; Gayen, Bishakhdatta; Meyer, Amelie; Morrison, Adele K.; Padman, Laurie; Phillips, Helen E.; Stevens, Craig L.; Toffoli, Alessandro; Constantinou, Navid C.; Cusack, Jesse M.; Cyriac, Ajitha; Doddridge, Edward W.; England, Matthew H.; Evans, D. Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Heil, Petra; Hogg, Andrew McC.; Holmes, Ryan M.; Huneke, Wilma G. C.; Jones, Nicole L.; Keating, Shane R.; Kiss, Andrew E.; Kraitzman, Noa; Malyarenko, Alena; McConnochie, Craig D.; Meucci, Alberto; Montiel, Fabien; Neme, Julia; Nikurashin, Maxim; Patel, Ramkrushnbhai S.; Peng, Jen‐Ping; Rayson, Matthew; Rosevear, Madelaine G.; Sohail, Taimoor; Spence, Paul; Stanley, Geoffrey J.. 2024 Closing the loops on Southern Ocean dynamics: From the circumpolar current to ice shelves and from bottom mixing to surface waves. Reviews of Geophysics, 62 (3). 10.1029/2022RG000781

Publication year

2024

Publication type

Article

Authors

Sanchez-Franks, A. ORCID: https://orcid.org/0000-0002-4831-5461; Holliday, N. P. ORCID: https://orcid.org/0000-0002-9733-8002; Evans, D. G. ORCID: https://orcid.org/0000-0002-6328-4093; Fried, N.; Tooth, O.; Chafik, L.; Fu, Y.; Li, F.; de Jong, M. F.; Johnson, H. L.. 2024 The Irminger Gyre as a key driver of the subpolar North Atlantic overturning. Geophysical Research Letters, 51 (8). 10.1029/2024GL108457

Publication year

2024

Publication type

Article

Authors

Buckley, Martha W.; Lozier, M. Susan; Desbruyères, Damien; Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093. 2023 Buoyancy forcing and the subpolar Atlantic meridional overturning circulation. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 381 (2262). 10.1098/rsta.2022.0181

Publication year

2023

Publication type

Article

Publication year

2023

Publication type

Article

Authors

Evans, D. Gwyn ORCID: https://orcid.org/0000-0002-6328-4093. 2022 RAPID report for research expedition DY146. 4 February – 9 March 2022, RRS Discovery. Research Expedition Report No. 76. Southampton, National Oceanography Centre, 158pp. (National Oceanography Centre Cruise Report, 76)

Publication year

2022

Publication type

Monograph

Publication year

2022

Publication type

Article

Authors

Savita, Abhishek; Zika, Jan D.; Domingues, Catia M. ORCID: https://orcid.org/0000-0001-5100-4595; Marsland, Simon J.; Evans, Gwyn Dafydd ORCID: https://orcid.org/0000-0002-6328-4093; Dias, Fabio Boeira; Holmes, Ryan M.; Hogg, Andrew McC.. 2021 Super Residual Circulation: a new perspective on ocean vertical heat transport. Journal of Physical Oceanography. 10.1175/JPO-D-21-0008.1

Publication year

2021

Publication type

Article

Publication year

2021

Publication type

Conference item

Authors

Evans, Dafydd ORCID: https://orcid.org/0000-0002-6328-4093; Frajka-Williams, Eleanor ORCID: https://orcid.org/0000-0001-8773-7838; Naveira Garabato, Alberto C.; Polzin, Kurt L.; Forryan, Alexander. 2020 Mesoscale eddy dissipation by a “zoo” of submesoscale processes at a western boundary. Journal of Geophysical Research: Oceans, 125 (11), e2020JC016246. 10.1029/2020JC016246

Publication year

2020

Publication type

Article

Authors

Fernández-Castro, Bieito; Evans, Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Frajka-Williams, Eleanor ORCID: https://orcid.org/0000-0001-8773-7838; Vic, Clément; Naveira-Garabato, Alberto C.. 2020 Breaking of internal waves and turbulent dissipation in an anticyclonic mode Water Eddy. Journal of Physical Oceanography, 50 (7). 1893-1914. 10.1175/JPO-D-19-0168.1

Publication year

2020

Publication type

Article

Authors

Yu, Xiaolong; Naveira Garabato, Alberto C.; Martin, Adrian ORCID: https://orcid.org/0000-0002-1202-8612; Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Su, Zhan. 2019 Wind‐forced symmetric instability at a transient mid‐ocean front. Geophysical Research Letters, 46 (20). 11281-11291. 10.1029/2019GL084309

Publication year

2019

Publication type

Article

Authors

Evans, Dafydd ORCID: https://orcid.org/0000-0002-6328-4093. 2019 RV Walton Smith Cruise WS18066, 4 - 16 March 2018. MerMEED microstructure cruise report. Southampton, National Oceanography Centre, 70pp. (National Oceanography Centre Cruise Report, 54)

Publication year

2019

Publication type

Monograph

Authors

Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Lucas, Natasha Sarah; Hemsley, Victoria; Frajka-Williams, Eleanor ORCID: https://orcid.org/0000-0001-8773-7838; Naveira Garabato, Alberto C.; Martin, Adrian ORCID: https://orcid.org/0000-0002-1202-8612; Painter, Stuart C.; Inall, Mark E.; Palmer, Matthew R.. 2018 Annual cycle of turbulent dissipation estimated from seagliders. Geophysical Research Letters, 45 (19). 10,560-10,569. 10.1029/2018GL079966

Publication year

2018

Publication type

Article

Authors

Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Zika, Jan D.; Naveira Garabato, Alberto C.; Nurser, A. J. George. 2018 The cold transit of Southern Ocean upwelling. Geophysical Research Letters, 45 (24). 10.1029/2018GL079986

Publication year

2018

Publication type

Article

Authors

Naveira Garabato, Alberto C.; MacGilchrist, Graeme A.; Brown, Peter J. ORCID: https://orcid.org/0000-0002-1152-1114; Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Meijers, Andrew J.S. ORCID: https://orcid.org/0000-0003-3876-7736; Zika, Jan D.. 2017 High-latitude ocean ventilation and its role in Earth's climate transitions. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 375, 20160324. 15, pp. 10.1098/rsta.2016.0324

Publication year

2017

Publication type

Article

Authors

Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Toole, John; Forget, Gael; Zika, Jan D.; Naveira Garabato, Alberto C.; Nurser, A. J. George; Yu, Lisan. 2017 Recent wind-driven variability in Atlantic water mass distribution and meridional overturning circulation. Journal of Physical Oceanography, 47 (3). 633-647. 10.1175/JPO-D-16-0089.1

Publication year

2017

Publication type

Article

Publication year

2016

Publication type

Article

Authors

Duchez, Aurélie; Frajka-Williams, Eleanor ORCID: https://orcid.org/0000-0001-8773-7838; Josey, Simon A. ORCID: https://orcid.org/0000-0002-1683-8831; Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Grist, Jeremy P. ORCID: https://orcid.org/0000-0003-1068-9211; Marsh, Robert; McCarthy, Gerard D.; Sinha, Bablu; Berry, David I..; Hirschi, Joël J.-M.. 2016 Drivers of exceptionally cold North Atlantic Ocean temperatures and their link to the 2015 European heat wave. Environmental Research Letters, 11 (7). 074004. 10.1088/1748-9326/11/7/074004

Publication year

2016

Publication type

Article

Authors

Duchez, Aurelie; Desbruyeres, Damien; Hirschi, Joel J-M.; Frajka-Williams, Eleanor; Josey, Simon ORCID: https://orcid.org/0000-0002-1683-8831; Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093. 2016 The tale of a surprisingly cold blob in the North Atlantic. US CLIVAR Variations, 14 (2). 19-23.

Publication year

2016

Publication type

Article

Authors

Evans, Dafydd Gwyn ORCID: https://orcid.org/0000-0002-6328-4093; Zika, Jan D.; Naveira Garabato, Alberto C.; Nurser, A.J. George. 2014 The imprint of Southern Ocean overturning on seasonal water mass variability in Drake Passage. Journal of Geophysical Research: Oceans, 119 (11). 7987-8010. 10.1002/2014JC010097

Publication year

2014

Publication type

Article