School of Earth and Environment

Lauren Gregoire Dr Lauren Gregoire

Academic Research Fellow

Telephone number: +44(0) 113 34 34945
Email address: L.J.Gregoire@leeds.ac.uk
Room: 10.137

Affiliation: Earth Surface Science Institute, Institute for Climate and Atmospheric Science

Biography

I am an ice sheet and climate modeller working on climate-ice sheet interactions during the Quaternary. I use the Glimmer-CISM and BISICLES ice sheet models and the FAMOUS and HadCM3 General circulation models of the MetOffice Unified model familly. My main research interests are:

  • Mechanisms of ice sheet instability
  • Abrupt climate change, rapid sea level changes
  • Quantifying uncertainty in complex models
  • Last deglaciation (~ 23,000 to 7,000 years ago)
  • Northern Hemisphere ice sheets ; The British and Irish ice sheet

I did my PhD at the University of Bristol with Prof. Paul Valdes and Prof Tony Payne on modelling the climate and ice sheets during the last deglaciation. It is during my PhD that I discovered the mechanism of Saddle Collapse which produced two major events of rapid sea level rise, the Meltwater Pulse 1a and the 8.2 kyr events, both of which are associated with abrupt climate changes. I joined the University of Leeds in July 2013 to become an Academic Research Fellow in Earth System modelling. I currently co-lead the PMIP working group on the last deglaciation and the modelling working group of the Past Earth Network.

Find me online:

orcid.org/0000-0003-0258-7282 ; ResearcherID ; Scopus ; Google Scholar ; ResearchGate ; Academia.edu ; Twitter: @LaurenGregoire ; Not very up to date Personal webpage.

Qualifications

  • 2017: Fellow of the Higher Education Academy.
  • 2011: PhD, School of Geographical Sciences, University of Bristol, UK. Modelling the Northern Hemisphere Climate and Ice Sheet during the Last Deglaciation. (More information)
  • 2007: Master in Climate-Environment Interactions, University de Versailles St Quentin en Yvelines, France.
  • 2005: Licence of Physics, University de Versailles St Quentin en Yvelines, France.

Memberships/Fellowships

Leadership :

Research Groups : Physical Climate change ; Palaeo@Leeds ; Leeds Quaternary.

Society memberships : International Glaciological Society ; American Geophysical Union.

Research Interests

Current projects:

  • Searching for the deglaciation: spatio-temporal boundary condition uncertainty and its
    implications for understanding abrupt climate change, Past Earth Network feasibility study with Daniel Williamson and Tamsin Edwards. April-Sept 2017.

Advertised PhD projects (applications now closed):

See latest info about the Leeds-York NERC DTP scheme.

Current PhD students:

  • Ilkka Matero (primary supervisor; Oct 2014-): North American ice sheet collapse and abrupt climate change during the 8.2 kyr event.
  • Jennifer Dentith (co-supervisor; Oct 2015-): Abrupt climate transitions and geological tracers of ocean circulation.
  • Niall Gandy (primary supervisor; Oct 2016-): Collapse of the British-Irish Ice Sheet: the role of climate and sea level changes. Affiliated with the BRITICE-CHRONO consortium.

Previous group members:

  • Nigel Clifford (MRes, primary supervisor, 2015-2016): Impact of ice sheet freshwater release in the North Atlantic on the variability of European winter climate.
  • Alice Drinkwater (Research experience placement, co-supervisor, summer 2016). Anthropogenic effects on intense melt episodes over Greenland.

Teaching Interests

Online course (for all): Introduction to python programming.

Undergraduate/postgraduate teaching:

  • SOEE3515/GEOG3669/SOEE5515M: Ice in the Earth System
  • SOEE3480: Past Global Environmental Systems
  • SOEE5656M: Past Global Environmental Systems level 5 (leading earth system modelling practicals)
  • SOEE5617M: Oceanography in the Earth System (leading earth system modelling practicals)
  • guest lectures for Introductory Oceanography (SOEE2110), Frontier Seminars; Quaternary Geology.

Previously taught modules:

  • SOEE3610 Oceanography in the Earth System
  • SOEE1442 Academic Tutorial in Envionmental Sciences
  • SOEE2110 Introductory Oceanography

In the past, I have also taught in palaeoclimate modelling and quaternary climate and ice sheet evolution.

Support duties

Publications

Publications with availabe data to download:

  • Gregoire LJ et al. (2018) Holocene lowering of the Laurentide ice sheet affects North Atlantic gyre circulation and climate, Climate Dynamics 1–17. [Paper] [Download data]
  • Gregoire LJ et al. (2011) Optimal tuning of a GCM using modern and glacial constraints, Climate Dynamics, 37, pp.705-719. [Paper] [Access data]

In review:

  • Ivanovic RF; Gregoire LJ; Wickert AD; Burke A. Climatic effect of Antarctic meltwater overwhelmed by concurrent Northern Hemispheric melt. (Submitted to Geophysical Research Letters)
  • Dentith JE; Ivanovic, RF; Gregoire LJ; Tindall JC; Smith RS. Ocean circulation drifts in multi-millennial climate simulations: The role of salinity corrections and climate feedbacks. (Submitted to Climate Dynamics)
  • Morris PJ, Swindles GT, Valdes PJ, Ivanovic RF, Gregoire LJ, Smith MW, Tarasov L, Haywood AM, Bacon KL. Global peatland initiation driven by regionally-asynchronous warming. (Submitted to PNAS)
  • Ivanovic RF , Gregoire LJ, Burke A, Wickert AD , Valdes PJ , Ng H C , Robinson LF, McManus J F, Mitrovica JX, Lee L , Dentith JE. Acceleration of northern ice sheet melt induces AMOC slowdown and northern 1 cooling in simulations of the early last deglaciation (Submitted to Paleoceanography and Paleoclimatology)
  • J.L. Wadham, J. Hawkings, L. Tarasov, L. Gregoire, R. G.M. Spencer, M. Gutjahr, A. Ridgwell. Why ice sheets matter for the global carbon cycle (Submitted to Nature Comms. 02/2017)
  • Maycock, A. C., A. Drinkwater, L. J. Gregoire, A. Lacour, Anthropogenic contribution to the intense warming over Greenland in July 2012 (submitted 10/16)
  • Ny Riavo Voarintsoa et al. Stalagmite records and model simulation indicating wet conditions in northwestern Madagascar during the 8.2 ka event. (submitted 07/2017 to Quaternary Science Reviews).

Publications