Professor Yueng-Djern Lenn

Professor in Physical Oceanography

y.lenn@bangor.ac.uk

Professor Yueng-Djern Lenn
311 Craig MairÌý
School of Ocean Sciences
Â鶹Íø, Wales
Menai Bridge LL59 5AB
UK
Ìý
tel:+44 1248388658
e-mail:y.lenn AT bangor.ac.uk
Ìý
I am a polar physical oceanographer andÌýmy interests lie in understanding the physical processes integral to ocean overturning that impact climate in the polar oceans. My Southern Ocean research has focused on Drake Passage eddy heat and momentum fluxes, the surface Ekman layer that constitute the upper limb of the overturning circulation, and diapycnal mixing driving water mass transformation in the thermocline at the Antarctic continental slope. My Arctic research focuses on water mass transformations occurring in the continental shelf seas and along the Arctic continental slope that link the Arctic to the global overturning circulation, most recently investigating the role of different mixing mechanisms (i.e. double diffusion and turbulent mixing drive by tides or winds) in fluxing heat and other properties from the warm Atlantic Water into overlying Arctic halocline and mixed layer. ÌýÌý
Ìý
I am also the schools liason for the School of Ocean Sciences, co-ordinating most school visits to Ocean Sciences by schools as well as providing support for colleagues who visit schools. ÌýOther outreach events I support include school STEM Careers Fairs and other Science Fairs. ÌýThese activities include events organised in partnership with STEMCymru and other similar organisations seeking to promote STEM in Wales and beyond.Ìý
Ìý
Research Area:
Ìý
  • PhD: Observations of Antarctic Circumpolar Current Dynamics and Small-scale variability near the Antarctic peninsula
    Scripps Institution of Oceanography, La Jolla, 2006
  • MSc: Medical Radiation Physics
    University College London, 1998
  • MA: EXPERIMENTAL AND THEORETICAL PHYSICS
    Cambridge University, 1997

PhD students: Will Stewart, Â鶹Íø (from September 2022)

Recent Phd Students: ÌýBen Barton, Universite de Bretagne Occidentale &. Jess Mead Silvester, Â鶹Íø

Current modules:

ONS1001: Environmental Data & Analysis

DXX1005: ÌýEarth Systems & Processes

OSX1005: Introducing the Oceans

OSX2005: ÌýEarth and Ocean Observation

OSX2006: TIdes, Waves & Sampling

OSX3002: ÌýMarine Ecosystems & Processes

OSX4010: Key Concepts & Techniques

OSX4012: ÌýPractical Oceanography

OSX4015: Climate & Climate Change

OSX4408: Field and Lab Oceanography

The PhD projects I propose usually stem from my current research interests and focus mainly on processes that drive fluxes of heat, freshwater and momentum within the polar ocean and between the ocean, cryosphere and atmosphere.Ìý Past students have studied how tidal forcing drives vertical fluxes of heat from Upper Circumpolar Deep Water into the surrounding colder fresher Antarctic-source waters along the Antarctic Peninsular continental slope, as welll as how warm Atlantic Water is contributing to sea ice loss in the Arctic Barents Sea.Ìý I have also supervised projects studying wind-driven mixing at the base of the open ocean mixed-layer and the role of wind-forcing in driving Arctic mixing.Ìý

2024

  • Published
    Marsh, R., Dey, D., Lenn, Y.-D. & Roberts, E. M., 17 Jul 2024, In: Climate Dynamics. 62, 8, p. 8227-8253 27 p.
    Research output: Contribution to journal › Article › peer-review

2022

  • Published
    Barton, B., Lique, C., Lenn, Y.-D. & Talandier, C., 3 Nov 2022, In: Journal of Geophysical Research: Oceans. 127, 11, e2021JC018280.
    Research output: Contribution to journal › Article › peer-review
  • Published
    von Appen, W., Baumann, T. M., Janout, M., Koldunov, N., Lenn, Y.-D., Pickart, R., Scott, R. & Wang, Q., 27 Apr 2022, In: Oceanography. 35, 2
    Research output: Contribution to journal › Article › peer-review
  • Published
    Scannell, B., Lenn, Y.-D. & Rippeth, T., 3 Feb 2022, In: Ocean Science. 18, 1, p. 169–192
    Research output: Contribution to journal › Article › peer-review
  • Published
    Shultz, K., Lincoln, B., Povazhnyy, V., Rippeth, T., Lenn, Y.-D., Janout, M., Alkire, M., Scannell, B. & Torres-Valdes, S., 16 Mar 2022, In: Geophysical Research Letters. 49, 5, e2021GL096152.
    Research output: Contribution to journal › Article › peer-review
  • Published
    Lenn, Y.-D., Nehama, F. & Mavume, A., 13 Sept 2022, Journey Through Tides. Green, M. & Duarte, J. (eds.). Elsevier
    Research output: Chapter in Book/Report/Conference proceeding › Chapter

2021

  • Published
    Lenn, Y.-D. (Editor) & Green, M. (Editor), 21 Mar 2021, The Ivy Press. 160 p. (30-Second....)
    Research output: Book/Report › Book
  • Published
    MacKinnon, J., Lenn, Y.-D., Simmons, H. L., Hargrove, J., Thomson, J., Peacock, T., Alford, M. H., Barton, B. I., Boury, S., Brenner, S. D., Couto, N., Danielson, S. L., Fine, E. C., Graber, H. C., Guthrie, J., Hopkins, J. E., Jayne, S. R., Jeon, C., Klenz, T. & Lee, C. M. & 9 others, Lucas, A. J., Lund, B., Mahaffey, C., Norman, L., Rainville, L., Smith, M. M., Thomas, L. N., Torres-Valdes, S. & Wood, K. R., 23 Apr 2021, In: Nature Communications. 12, 1, p. 2418
    Research output: Contribution to journal › Article › peer-review
  • Published
    Lenn, Y.-D., Fer, I., Timmermans, M.-L. & MacKinnon, J. A., 5 Oct 2021, Ocean Mixing: Drivers, Mechanisms, Impacts. Meredith, M. & Garabato, A. (eds.). Elsevier, p. 275-299
    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review
  • Published
    Schulz, K., Janout, M. A., Lenn, Y.-D., Castillo, E. R., Polyakov, I., Mohrholz, V., Tippenhauer, S., Reeve, K., Holemann, J., Rabe, B. & Vredenborg, M., Feb 2021, In: Journal of Geophysical Research: Oceans. 126, 2, e2020JC016375.
    Research output: Contribution to journal › Article › peer-review

2020

  • Published
    Barton, B., Lique, C. & Lenn, Y.-D., Aug 2020, In: Journal of Geophysical Research: Oceans. 125, 8, e2019JC015449.
    Research output: Contribution to journal › Article › peer-review

2019

  • Published
    Polyakov, I. V., Padman, L., Lenn, Y.-D., Pnyushkov, A., Rember, R. & Ivanov, V. V., 4 Jan 2019, In: Journal of Physical Oceanography. 49, 1, p. 227-246
    Research output: Contribution to journal › Article › peer-review
  • Published
    Roemmich, D., Alford, M. H., Claustre, H., Johnson, K., King, B., Moum, J., Oke, P., Owens, W. B., Pouliquen, S., Purkey, S., Scanderbeg, M., Suga, T., Wijffels, S., Zilberman, N., Bakker, D., Baringer, M., Belbeoch, M., Bittig, H. C., Boss, E. & Calil, P. & 60 others, Carse, F., Carval, T., Chai, F., Conchubhair, D. Ó., d’Ortenzio, F., Dall’Olmo, G., Desbruyeres, D., Fennel, K., Fer, I., Ferrari, R., Forget, G., Freeland, H., Fujiki, T., Gehlen, M., Greenan, B., Hallberg, R., Hibiya, T., Hosoda, S., Jayne, S., Jochum, M., Johnson, G. C., Kang, K., Kolodziejczyk, N., Körtzinger, A., Traon, P.-Y. L., Lenn, Y.-D., Maze, G., Mork, K. A., Morris, T., Nagai, T., Nash, J., Garabato, A. N., Olsen, A., Pattabhi, R. R., Prakash, S., Riser, S., Schmechtig, C., Schmid, C., Shroyer, E., Sterl, A., Sutton, P., Talley, L., Tanhua, T., Thierry, V., Thomalla, S., Toole, J., Troisi, A., Trull, T. W., Turton, J., Velez-Belchi, P. J., Walczowski, W., Wang, H., Wanninkhof, R., Waterhouse, A. F., Waterman, S., Watson, A., Wilson, C., Wong, A. P. S., Xu, J. & Yasuda, I., 2 Aug 2019, In: Frontiers in Marine Science. 6, 439
    Research output: Contribution to journal › Article › peer-review
  • Published
    Rippeth, T., Vlasenko, V., Stashchuk, N., Koslov, I., Scannell, B., Green, M., Lincoln, B. & Lenn, Y.-D., 11 Nov 2019, ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, OMAE2019-96621
    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2018

  • Published
    Barton, B., Lenn, Y.-D. & Lique, C., 15 Aug 2018, In: Journal of Physical Oceanography.
    Research output: Contribution to journal › Article › peer-review

2016

  • Published
    Lincoln, B., Rippeth, T., Lenn, Y.-D., Timmermans, M.-L., Willaims, W. & Bacon, S., 28 Sept 2016, In: Geophysical Research Letters. 43, 18, p. 9749-9756
    Research output: Contribution to journal › Article › peer-review

2015

  • Published
    Janout, M. A., Aksenov, Y., Holemann, J. A., Rabe, B., Schauer, U., Polyakov, I. V., Bacon, S., Coward, A. C., Karcher, M., Lenn, Y., Kassens, H. & Timokhov, L., 18 Jul 2015, In: Journal of Geophysical Research: Oceans. 120, 7, p. 4925-4944
    Research output: Contribution to journal › Article › peer-review
  • Published
    Rippeth, T. P., Lincoln, B. J., Lenn, Y. D., Green, J. A., Sundfjord, A. & Bacon, S., Mar 2015, In: Nature Geoscience. 8, 3, p. 191-194
    Research output: Contribution to journal › Article › peer-review

2014

  • Published
    Silvester, J. M., Lenn, Y. D., Polton, J. A., Rippeth, T. P. & Maqueda, M. M., 25 Nov 2014, In: Geophysical Research Letters. 41, 22, p. 7950-7956
    Research output: Contribution to journal › Article › peer-review
  • Published
    Janout, M. A. & Lenn, Y. D., 8 Jan 2014, In: Journal of Physical Oceanography. 44, 1, p. 202-219
    Research output: Contribution to journal › Article › peer-review

2013

  • Published
    Polton, J. A., Lenn, Y., Elipot, S., Chereskin, T. K. & Sprintall, J., 1 Aug 2013, In: Journal of Physical Oceanography. 43, 8, p. 1733-1740
    Research output: Contribution to journal › Article › peer-review
  • Published
    Brannigan, L., Lenn, Y. D., Rippeth, T. P., McDonough, E., Chereskin, T. K. & Sprintall, J., 1 Aug 2013, In: Journal of Physical Oceanography. 43, 8, p. 1798-1810
    Research output: Contribution to journal › Article › peer-review

2012

  • Published
    Polyakov, I. V., Pnyushkov, A. V., Rember, R., Ivanov, V. V., Lenn, Y. D., Padman, L. & Carmack, E. C., 1 Jan 2012, In: Journal of Physical Oceanography. 42, 1, p. 95-109
    Research output: Contribution to journal › Article › peer-review

2011

  • Published
    Lenn, Y., Rippeth, T. P., Old, C., Bacon, S., Polyakov, I., Ivanov, V. & Holemann, J., 1 Mar 2011, In: Journal of Physical Oceanography. 41, 3, p. 531-547
    Research output: Contribution to journal › Article › peer-review
  • Published
    Lenn, Y.-D., Chereskin, T., Sprintall, J. & McClean, J., 1 Jul 2011, In: Journal of Physical Oceanography. 41, 7, p. 1385-1407
    Research output: Contribution to journal › Article › peer-review

2009

  • Published
    Lenn, Y. D. & Chereskin, T. K., 1 Mar 2009, In: Journal of Physical Oceanography. 39, 3, p. 768-779
    Research output: Contribution to journal › Article › peer-review
  • Published
    Lenn, Y. D., Wiles, P. J., Torres-Valdes, S., Abrahamsen, E. P., Rippeth, T. P., Simpson, J. H., Bacon, S., Laxon, S. W., Polyakov, I., Ivanov, V. & Kirillov, S., 3 Mar 2009, In: Geophysical Research Letters. 36, p. L05601
    Research output: Contribution to journal › Article › peer-review

2008

  • Published
    Lenn, Y. D., Chereskin, T. K. & Sprintall, J., 1 May 2008, In: Journal of Physical Oceanography. 38, 5, p. 1000-1010
    Research output: Contribution to journal › Article › peer-review

2007

  • Published
    Lenn, Y.-D., Chereskin, T., Sprintall, J. & Firing, E., 1 Jan 2007, In: Journal of Marine Research. 65, 1, p. 27 58 p.
    Research output: Contribution to journal › Article › peer-review

2024

  • Keynote talk at Challenger Society 2024 Conference

    5 Sep 2024

    Links:

    Activity: Invited talk (Speaker)

  • Vice Chair

    Jun 2024

    Activity: Participation in Academic conference (Member of programme committee)

  • Elected as Fellow of the LSW

    May 2024

    Links:

    Activity: Membership of board (Chair)

2023

  • Consulting scientist for BBC Springwatch, episode 5.

    5 Jun 2023

    Links:

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

2022

  • 2-minute interview about the launch of the SWOT satellite

    16 Dec 2022

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

  • John F Nye Lecturer, AGU Honors 2022, AGU 2022 Annual Meeting, Chicago

    13 Dec 2022

    Links:

    Activity: Invited talk (Keynote speaker)

2021

  • 27 Nov 2021

    Links:

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

  • expert comment on recently published study about Arctic Atlantification ocurring in the early 1900s

    24 Nov 2021

    Links:

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

  • Live interview World Oceans Day

    8 Jun 2021

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

  • Journal of Physical Oceanography Editorial Board

    15 May 2021 →

    Links:

    Activity: Membership of board (Member)

  • 1 May 2021 →

    Activity: Editorial activity (Editorial board member)

2020

  • This organisation facilitates online discussions between school classes and groups of scientists. And in September 2021, I was named the Hydrogen Zone winner of favorite scientist voted by the school children

    1 Jun 2020 →

    Links:

    Activity: Types of Public engagement and outreach - Schools engagement (Contributor)

  • Funded by the Scientific Committee on Ocean Research to chair the Analysing ocean turbulence observations to quantify mixing (ATOMIX) working group

    1 Jan 2020 – 31 Dec 2023

    Links:

    Activity: Membership of board (Chair)

2019

  • 16 Oct 2019 – 18 Oct 2019

    Activity: Participation in Academic workshop, seminar, course (Speaker)

  • 5-minute interview about Barents Sea Atlantification

    Jan 2019

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

  • Discussion about the Changing Arctic Ocean programme

    Jan 2019

    Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

2018

  • Arctic Eddies

    3 Jun 2018 – 8 Jun 2018

    Links:

    Activity: Invited talk (Speaker)

2016

  • Development of STEM demonstrations and practicals, training student demonstrators and co-ordination of schools engagement events

    1 Jan 2016 – 1 Jan 2025

    Activity: Types of Public engagement and outreach - Schools engagement (Contributor)

  • 01/10/2023 – 15/04/2026 (Active)

  • 01/05/2022 – 31/05/2027 (Active)

  • 14/11/2020 – 13/01/2025 (Finished)

  • 01/07/2018 – 01/08/2022 (Finished)

  • 01/05/2016 – 01/08/2017 (Finished)

  • 01/09/2010 – 05/09/2016 (Finished)

2018-2021 NERC Changing Arctic Ocean: Primary productivity driven by escalating Arctic nutrient fluxes? (Lead Principle Investigator, Lenn)

2010-2015 NERC Postdoctoral Fellowship Principle Investigator

2011-2016 TEA-COSI:The Environment of the Arctic: Climate, Ocean and Sea-Ice UK NERC Consortium: Including Lenn (Project Partner, Â鶹Íø.)

2012-2015 Upper ocean heat flux in the Eurasian Basin: Oceanic thermodynamic forcing contributing to Arctic ice loss. USA National Science Foundation grant including Lenn (Project Partner, Â鶹Íø)Ìý

QUICCHE: QUantifying Interocean fluxes in the Cape Cauldron Hotspot of Eddy kinetic energy

Project webpage: https://beal-agulhas.earth.miami.edu/research/projects/quicche/index.html