3 Fully funded PhD student positions in ice sheet/cap and climate modelling in the glacial dynamics group at Memorial University of Newfoundland, starting September, 2021.

classic Classic list List threaded Threaded
1 message Options
Reply | Threaded
Open this post in threaded view
|

3 Fully funded PhD student positions in ice sheet/cap and climate modelling in the glacial dynamics group at Memorial University of Newfoundland, starting September, 2021.

Lev Tarasov

(Colleagues are asked to bring this to the attention of competent
M.Sc. students who might be interested in these projects.)


************************************************************************
Position 1: Fully funded PhD studentship in coupled climate and ice sheet modelling of the last glacial cycle
************************************************************************

Project: A  Bayesian calibration of a global coupled ice
and climate model for the last glacial cycle. From LGM onward, glacial
geology and RSL data provide a strong set of constraints which are a
challenge to fit. Conversely, prior to LGM, there are few constraints
on ice sheet evolution aside from global (accurately far-field) sea
level proxies. However there are many more constraints on regional
climate from ice core, terrestrial, and marine core
records. This calibration will therefore focus on pre-LGM global ice
sheet and climate evolution relying more on paleoclimate constraints.

This project will also examine the stability of the last glacial cycle
to evaluate which features of the cycle were robust and which are
sensitive to noise in the system (eg from large volcanic
events). Through sensitivity experiments, the project will furthermore
isolate the role of each ice sheet in the last glacial cycle.

The project will rely on a hierarchy of coupled ice and climate models
including the LCice2.0 coupled GSM glacial system model and LOVECLIM EMIC
(as detailed in Bahadory and Tarasov, GMD, 2018, Bahadory et al,
TCD 2020) as well as a version coupled to Plasim (Andres and Tarasov,
CP 2019). Depending on student interest and progress, the project may
also include refinement of a Climate Generator: A Bayesian stochastic
emulator of expensive General circulation climate models for glacial
cycle modelling contexts.

************************************************************************
Position 2: Fully funded PhD studentship in quantifying coupled ice sheet and
             climate feedbacks on centennial to millennial scales
************************************************************************

Project: In collaboration with other members of the MUN glacial
dynamics group (including position 1 above), the student will examine
the fully coupled ice and climate interactions underlying millennial
to centennial scale variability, including Heinrich events and the
data-rich H1/MWP1a/Younger Dryas sequence. This project will use the
LCice2.0 GSM/Plasim coupled ice and climate model.

To date, most model-based studies of centennial to millennial glacial
earth system variability have relied on either forced climate or
forced ice sheets. Studies to date have made clear that changing ice
sheet elevation and sheet/shelf extent, changing ocean gateways, and changing
spatio-temporal distributions of meltwater and iceberg discharge can
all impact climate. Changing climate will in turn impact each ice
sheet and therefore each of the above related ice sheet and
topographic characteristics. What is not clear is what happens when
ice sheets and climate are fully coupled.  It is even more unclear how
this coupled system will responds to noise in the system, be it the
climate impact of a large scale volcanic event or noise representing
the impact of unresolved processes in model components.


This project will tackle the above questions and thereby improve our
understanding coupled ice and climate system instabilities.



************************************************************************
Position 3: Fully funded PhD studentship in Bayesian Calibration of last
             glacial cycle models for the three major ice caps
************************************************************************

Project: Calibrate last glacial cycle models for the Tibetan,
Icelandic, and Patagonian ice caps. In collaboration with regional
experts for each ice sheet, relevant data constraints for each ice
sheet will be assembled and quality controlled. Appropriate error
models for each type of data constraint will be formulated. The
resultant databases will be used to calibrate the 3D Glacial Systems
Model (GSM) for the last glacial cycle for each ice cap.

The calibration work include detailed model structural uncertainty
assessment and possible refinement of the Bayesian calibration
methodology used in Tarasov et al (2012) for the deglacial North
American ice complex.

This project will involve collaboration with position 1 above for
developing an appropriate distribution of climate forcings and
analyzing the impact of each ice cap on the last glacial cycle.


########################################################################

Applications for any of the positions are invited from candidates with
an interest in modelling ice sheet and climate interactions and Earth
Systems science.  Applicants must have their BSc and/or Masters degree
in physics, geophysics, applied mathematics, or closely related
fields. They must be fluent in English. Applicants must also be
interested in working in a collaborative environment in
computationally intensive projects.


##################
To apply for any of the three positions:
##################

Required skills:

  -Some experience in coding in F90 (or F95), C, or Python, and analysis
   packages such as OCTAVE/MATLAB, R, CDO, ...

  -Knowledge of general physics and some exposure to fluid dynamics or
  continuum mechanics (even better with understanding of geophysical
  fluid dynamics and/or atmospheric or ocean physics or glaciology)

  -Fluency in relevant maths (linear/matrix algebra, partial
   differential equations, and vector calculus)

  -Familiarity with Linux

The group has a dedicated 820 core cluster and access to further
computational resources through Compute Canada.

Associated benefit: the spectacular natural environment of
Newfoundland, Canada

Start date: Sept 1/2021

Details of graduate studies in Physics and Physical Oceanography at
Memorial University can be found at
http://www.mun.ca/physics/graduate_students/


Interested students should contact:

Lev Tarasov
Department of Physics and Physical Oceanography
Memorial University of Newfoundland
St. John's, NL A1B 3X7
[hidden email]
http://www.physics.mun.ca/~lev/

include the following:

1. A cover letter including your name, academic status and contact
details, as well as the names and contact details of two
faculty advisers from whom confidential letters may be sought.
2. A statement of interest including long-term academic plans, research
interests,...
3. A short resume/CV, including a list of courses taken, and grades.
4. A self evaluation of strong and weak research skills, skills you
particularly want to develop, and likes and dislikes associated with
research and modelling.
_______________________________________________
You're subscribed to the CRYOLIST mailing list
To send a message to the list, email [hidden email]
For posting guidelines, see http://cryolist.org/posting.html
To unsubscribe, see http://cryolist.org/unsubscribe.html