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Fully funded PhD studentship, development of a climate generator and algorithmic improvement of history matching - St. John's, Canada

St. John's, Canada
Category
Logistics
The position is available at the Glacial Dynamics Group at Memorial University of Newfoundland.
The group has a dedicated 720 core cluster and access to further computational resources through Compute Canada and ACENET.
Associated benefit: the spectacular natural environment of Newfoundland, Canada

Start date: Sept 1/2024
Description
This studentship has two related projects.

Project A: the development of a Climate Generator: A Bayesian stochastic emulator of expensive General circulation climate models. This project will explore different approaches to emulating the response of computationally expensive climate models for glacial cycle ice sheet modelling contexts.

Project B: Building on the discussion in
https://www.physics.mun.ca/~lev/revCalG.pdf, this project will compare different stochastic process and Bayesian artificial neural network emulators for history matching contexts and refine methodologies for history matching in paleo ice and climate modelling contexts.
Tasks
Applications for this postion are invited from candidates with an interest in modelling ice sheet and climate interactions and Earth Systems science.
Applicants must have their 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 incomputationally intensive projects.
Requirements
Required Skills:
-Experience in: coding in F90 (or F95), C, or Python; shell scripting; 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)
-Working familiarity with Linux
-Experience with machine learning and/or statistical emulators
Applications
Interested students should contact:
Lev Tarasov
Department of Physics and Physical Oceanography
Memorial University of Newfoundland
St. John's, NL A1B 3X7
lev@mun.ca
https://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.
Application deadline
Further information
Details of graduate studies in Physics and Physical Oceanography at Memorial University can be found at: https://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
lev@mun.ca
https://www.physics.mun.ca/~lev/

No specific application deadline was mentioned in the information. Please contact Lev Tarasov if you want this information.
Contact email
levatmun.ca

Fully funded PhD position, coupled climate and ice sheet modelling of the Pleistocene - St.John's (Newfoundland), Canada

St. John's, Canada
Category
Logistics
The position is available at the Glacial Dynamics Group at Memorial University of Newfoundland.
The group has a dedicated 720 core cluster and access to further computational resources through Compute Canada and ACENET.
Associated benefit: the spectacular natural environment of Newfoundland, Canada

Start date: Sept 1/2024
Description
This studentship has two related projects:

Project 1A: History matching (cf https://www.physics.mun.ca/~lev/revCalG.pdf) of a global coupled ice and climate model for the last glacial cycle. From Last Glacial Maximum onward, glacial geology and relative sea level data provide a strong set of constraints which are a challenge to fit. Conversely, prior to LGM, there are much fewer constraints on ice sheet evolution aside from far-field sea level proxies. However there are many more constraints on regional climate from ice core, terrestrial, and marine core records. This history matching will therefore focus on pre-LGM global ice sheet and climate evolution relying more on paleoclimate constraints.

Project 1B: Using the history-matched parameter vectors from project 1A, examine the stability of select glacial cycles of the last 2 million years especially in the context of explaining the mid-Pleistocene transition from approximately 40 kyr glacial cycles to 100 kyr cycles. This will entail analysis of noise sensitivity (eg from large volcanic events), the impact of changing topography due to subglacial erosion and sediment transport, and the testing of simplified carbon cycle representations. These projects will rely on a hierarchy of coupled ice and climate models including the LCice2.0 coupled glacial system model (GSM) and LOVECLIM EMIC (an earlier version was detailed in Bahadory and Tarasov, GMD, 2018, Bahadory et al, CP 2021) as well as a new version coupled to the Plasim GCM (Andres and Tarasov, CP 2019). A key relevant feature of LCice is the state-of-the-art fully coupled sub-glacial sediment processes model in the GSM (cf Drew and Tarasov, https://egusphere.copernicus.org/preprints/2024/egusphere-2024-620/)
Tasks
Applications for this postion are invited from candidates with an interest in modelling ice sheet and climate interactions and Earth Systems science.
Applicants must have their 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 incomputationally intensive projects.
Requirements
Required Skills:
-Experience in: coding in F90 (or F95), C, or Python; shell scripting; 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)
-Working familiarity with Linux
Applications
Interested students should contact:
Lev Tarasov
Department of Physics and Physical Oceanography
Memorial University of Newfoundland
St. John's, NL A1B 3X7
lev@mun.ca
https://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.
Application deadline
Further information
Details of graduate studies in Physics and Physical Oceanography at Memorial University can be found at: https://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
lev@mun.ca
https://www.physics.mun.ca/~lev/

No specific application deadline was mentioned in the information. Please contact Lev Tarasov if you want this information.
Contact email
levatmun.ca

PhD position, climatic change on the Greenland Ice Sheet over the Late Cenozoic to establish lineages to future climate change - Durham, UK

Durham, United Kingdom
Category
Logistics
PhD scholarship
fully funded for UK nations
Start October 2024
Stipend in UKRI values.
The project will be supervised by David Selby, Emma Ownsworth (Earth Sciences), Jerry Lloyd (Geography) & Paul Knutz (GEUS).
Description
PhD Candidate is sought for a fully funded PhD program at Durham University (UK) in the Departments of Earth Sciences and Geography to research the climatic change on the Greenland Ice Sheet over the Late Cenozoic to establish lineages to future climate change.
Recent studies have highlighted the sensitivity of the Greenland Ice Sheet (GrIS) to future climate warming with significant implications for global sea-level rise and impacts on the Atlantic Meridional Overturning Circulation. Understanding the past evolution of the GrIS and the interaction with broader climate changes is key to improving our understanding of the potential future response of the GrIS to ongoing climate change. Yet, there are significant gaps in our knowledge in respect to the evolution of the GrIS associated with past climate changes. For example, the detailed evolution and cycles of growth and decay of the GrIS during the time period covering the Pliocene through the Pleistocene (the last 4 – 5 million years) that encompasses numerous fluctuations between warmer and cooler climates. To address these questions the project will build on ongoing research develop-ing and applying a novel technique, osmium-isotopes, to reconstructing ice sheet dynamics associat-ed with development and growth of a Northern GrIS onto and across the continental shelf into the marine environment. Utilising seafloor sediment cores our recent research shows osmium-isotopes can be used to track periods of increased delivery of continental material due to glacial erosion out to the Greenland continental margin and into Baffin Bay (Ownsworth et al., 2023). The osmium-isotope signal in marine cores is, therefore, sensitive to the growth and expansion of the GrIS onto and across the continental shelf during colder intervals and subsequent retreat from the shelf during warmer intervals.
Tasks
Research will principally involve geochemical analyses (osmium-isotopes) but will also include additional sedimentological and microfossil analyses (e.g. foraminiferal analysis, total organic carbon (TOC), XRF scanning, x-rays and multi-sensor core logging). Osmium data will be compared to the well-established proxies collected from the same cores (in collaboration with international partners on IODP 400) and used to reconstruct environmental changes. Specifically, the osmium-isotopes will be used to investigate sediment delivery from the Greenland landmass via glacial erosion and track the development and evolution of the northern GrIS into a tidewater environment onto and across the continental shelf. The sensitivity of the osmium isotope signature to terrestrial-sourced vs open ocean sourced material will provide a detailed understanding of the more subtle changes in sedi-ment provenance linked to past climate changes and, ultimately, the sensitivity of northern GrIS to climate change.
Requirements
Minimum of an Undergraduate degree in Earth Sciences
Applications
For further information write to Prof David Selby - email via form at https://www.dur.ac.uk/staff/d65d2f66/
Applications deadline June 30th 2024.
Application deadline
Further information
For further information write to Prof David Selby - email via form at https://www.dur.ac.uk/staff/d65d2f66/

Reading:
Ownsworth et al., 2023. Tracking sediment delivery to central Baffin Bay during the past 40 kyrs: Insights from a multi-proxy approach and new age model. QSR. DOI: 10.1016/j.quascirev.2023.108082
Rooney et al., 2015. Tracking millennial-scale Holocene glacial advance and retreat using osmium isotopes: Insights from the Greenland ice sheet. Quaternary Science Reviews 138, 49-61.
Tan et al., 2018. Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition. Na-ture Communications 9, 4755. DOI: 10.1038/s41467-018-07206-w.
Contact email
pulses_bleach_0xaticloud.com

PhD, Permafrost - LSCE, France

Gif sur Yvette, France
Theme
Category
Logistics
Permafrost: climate-carbon interactions from the Pleistocene to the
Anthropocene

Main supervisor: Didier Roche
Co-supervisors: Nathaelle Bouttes and Aurélien Quiquet
Contact: nathaelle.bouttes@lsce.ipsl.fr
Location: LSCE, Bat 714, CEA-Orme des Merisiers, 91191 Gif sur Yvette https://www.lsce.ipsl.fr/
Team: CLIM (https://www.lsce.ipsl.fr/Phocea/Vie_des_labos/Ast/ast_groupe.php?id_groupe=7)
Funded by ANR (French research agency)
External collaborators: Antoine Séjourné (GEOPS), Emilie Capron (IGE, Grenoble), Pepijn Bakker
(University of Amsterdam)
Keywords: permafrost, climate, carbon cycle, model, ice sheet
Description
Permafrost - ground frozen for at least 2 consecutive years - covers large areas of high latitudes, particularly in the northern hemisphere. It plays a crucial role in the climate system: exchanges of heat, water and carbon with the atmosphere can alter the carbon cycle and the climate. In particular, the presence of permafrost can strongly modify the local seasonal cycle, which can favour the formation or melting of ice caps during glacial-interglacial cycles. Changes in permafrost extent are also likely to have influenced changes in atmospheric CO2 concentration during glacial-interglacial periods, by storing or releasing carbon as the permafrost advances and retreats. Finally, there are still many uncertainties as to how permafrost will evolve in the future, which could have a lasting impact on the carbon cycle and climate over the next few thousand years.
Tasks
To understand its role in past changes and anticipate its future impacts, it is necessary to simulate permafrost with numerical models interacting with climate and carbon cycle models. To this end, this thesis will focus on coupling a permafrost model (VAMPER) with a coupled climate-ice sheet-carbon model (iLOVECLIM model). Comparison with existing data for the modern period will validate the coupling. Secondly, simulations of permafrost evolution during past periods and comparison with existing data, particularly in terms of extension, will enable the model to be improved. During glacialinterglacial periods, the student will analyse interactions with climate, in order to assess the role of permafrost in the establishment and melting of the Northern Hemisphere ice caps. The student will also add the carbon cycle to the permafrost model to assess its role in past changes in CO2 and atmospheric δ13C, a proxy for constraining carbon exchange. These developments, coupled with comparisons with paleo reconstructions, will help improve the model and ultimately assess the role of permafrost in future CO2 and climate projections.
Requirements
If you want more information don't hesitate to contact Aurelien Quiquet (Aurelien.Quiquet@lsce.ipsl.fr), Didier Roche (didier.roche@lsce.ipsl.fr)
Applications
If you want more information don't hesitate to contact Aurelien Quiquet (Aurelien.Quiquet@lsce.ipsl.fr), Didier Roche (didier.roche@lsce.ipsl.fr)
Application deadline
Further information
If you want more information don't hesitate to contact Aurelien Quiquet (Aurelien.Quiquet@lsce.ipsl.fr), Didier Roche (didier.roche@lsce.ipsl.fr)
Contact email
Aurelien.Quiquetatlsce.ipsl.fr

Doctoral Student, Geophysics - Lund, Sweden

Lund, Sweden
Category
Logistics
The doctoral student position will be placed at the Department of Geology at Lund University. At the department, research is conducted over a broad range of geoscience disciplines with extensive collaboration with both national and international institutions. With this collective atmosphere, the department maintains a positive and stimulating work environment.

The Department of Geology hosts and is surrounded by excellent infrastructure and professional staff in several support functions. Lund University is a government agency which means that you, as a doctoral student, get benefits including e.g., generous paid annual leave, and health promotion benefits, see https://www.lunduniversity.lu.se/sites/www.lunduniversity.lu.se/files/benefits-lu-employees.pdf.

Type of employment: Temporary position
First day of employment: 2024-06-01 or by latest 2024-10-01
Salary: Monthly salary
Number of positions: 1
Full-time equivalent: 100
City: Lund
County: Skåne län
Country: Sweden
Reference number: PA2024/768
Contact: Andreas Nilsson, +46462223955
Description
A doctoral student position in Geobiosphere Science is hereby announced at the Department of Geology, Lund University (LU), Sweden. The PhD position will be part of the ERC project “Core dynamics on millennial timescales (PALEOCORE)”. In this project they will use new models of how Earth’s magnetic field has varied through time, based on geological and archeological data, to study ancient analogues of the present-day geomagnetic field and reveal the underlying processes within the (hidden) liquid core of our planet. Age uncertainties of paleo-data are one of the main challenges with this project and a fundamental challenge for paleo-reconstructions in general. To overcome the issue, the department will use novel modelling techniques whereby the slowly varying morphology of the geomagnetic field, which they are trying to recover, is simultaneously used to synchronize the different datasets in time. The methods and results from this project will not only be of benefit for our understanding of the geomagnetic field but will also provide important geochronological constraints that are necessary to study, for example, leads and lags in paleoclimate.
Tasks
The PhD research will primarily focus on palaeomagnetic analyses (including lab measurements and modelling) of previously collected sediment cores from Kerguelen and South Georgia Islands. The new data will be important for the construction of a new generation of global geomagnetic field models, developed in parallel. The PhD student will be part of a larger research team here in Lund and the project will also involve extensive exchanges with associated research teams in Oregon, USA, and Bergen, Norway.

The main duties of doctoral students are to devote themselves to their research studies which includes participating in research projects and third cycle courses. The work duties can also include teaching and other departmental duties (no more than 20%).
Requirements
A person meets the general admission requirements for third-cycle courses and study programmes if he or she:

-has been awarded a second-cycle qualification, or
-has satisfied the requirements for courses comprising at least 240 credits of which at least 60 credits were awarded in the second cycle, or
-has acquired substantially equivalent knowledge in some other way in Sweden or abroad.

Additional requirements:

- When starting, the applicant is expected to hold a university degree (M.Sc. or equivalent) in geology/geophysics or a closely related field of natural sciences.
- Documented very good oral and written proficiency in English.
- The PhD-project may include lab work at facilities abroad and in the field. It is expected that the PhD student can travel in order to conduct this work.

The department is looking for a creative person who thrives in a dynamic research environment. The project requires close collaboration with international researchers and the ability to work independently. The candidate should be able to carry out hands-on experiments both alone and in close collaboration.

The following qualifications are an advantage:
- Documented experience with programming, data analyses, Bayesian statistics and data modelling.
- Documented experience of research in the field of paleomagnetism, geomagnetism, paleolimnology.
Applications
Applications shall be written in English and include a cover letter stating the reasons why you are interested in the position and in what way the research project corresponds to your interests and educational background. Additionally, within this cover letter, the department kindly asks you to include a section (approximately half a page) stating the research direction you would like to focus on within the broader subject of Earth Sciences. This short outline serves to demonstrate your scientific interests and creativity and can be different from this project.

The application must also contain a CV, degree certificate (if awarded at the time of application) or equivalent, a copy of the MSc thesis (or equivalent, or a summary if the thesis is not completed at the time of application) and other documents you wish to be considered (grade transcripts etc.). While they ask you to include contact information for one to three references, actual letters of recommendation are not needed at this stage. Candidates will be called for an interview before appointment.

Assessment criteria:
Selection for third-cycle studies is based on the student’s potential to profit from such studies. The assessment of potential is made primarily on the basis of academic results from the first and second cycle.

Special attention is paid to the following:
- Knowledge and skills relevant to the thesis project and the subject of study.
- An assessment of ability to work independently and to formulate and tackle research problems.
- Written and oral communication skills
- Other experience relevant to the third-cycle studies, e.g. professional experience.
- Consideration will also be given to good collaborative skills, drive and independence, and how the applicant, through his or her experience and skills, is deemed to have the abilities necessary for successfully completing the third cycle programme.
Application deadline
Further information
To view the full job advert, please visit: https://lu.varbi.com/en/what:job/jobID:710873/
For further questions contact Andreas Nilsson at +46462223955
Contact email
andreas.nilssonatgeol.lu.se

PhD fellowship in Ancient DNA and Palaeoecology of Arctic Marine Mammals - Copenhagen, Denmark

Copenhagen, Denmark
Theme
Category
Logistics
The position is at the Globe Institute, which is part of the Faculty of Health and Medical Sciences at the University of Copenhagen. The place of employment is at the Section for Molecular Ecology and Evolution, Globe Institute, Øster Farimagsgade 5A, 1014 Copenhagen K, Denmark.

The average weekly working hours are 37 hours per week.
The position is a fixed-term position limited to a period of 3 years.
The starting date is 15th of August 2024 or after agreement.
The employment is conditioned upon the applicant’s success­ful enrolment as a PhD student at the Graduate School at the Faculty of Health and Medical Sciences, University of Copenhagen. This requires submission and acceptance of an application for the specific project formulated by the applicant.
The PhD study must be completed in accordance with The Ministerial Order on the PhD programme (2013) and the Faculty’s rules on achieving the degree.

Salary, pension and terms of employment are in accordance with the agree­ment between the Ministry of Taxation and The Danish Confederation of Professional Associations on Academics in the State. Depending on seniority, the monthly salary starts at 28,448 DKK/approximately 3,825 EUR (October 2022 level) plus pension.

Principal supervisor is Professor Eline Lorenzen, Section for Molecular Ecology and Evolution, Globe Institute, University of Copenhagen, elinelorenzen@sund.ku.dk.
Start: 15 August 2024
Duration: 3 years as a PhD fellow

The Globe Institute is part of the Faculty of Health and Medical Sciences at the University of Copenhagen. The Institute’s main purpose is to address basic scientific questions through interdisciplinary approaches. The institute operates at the intersection of natural and medical sciences and the humanities. Information on the institute can be found at: http://www.globe.ku.dk/. The Globe Institute is committed to creating an inclusive and diverse environment where employees and students can belong and thrive. Check this part of their website for more information.
Description
The PhD project, as part of the Carlsberg Foundation funded project INTERACT, will examine the Holocene history of Arctic marine mammals, by investigating fossil specimens of several species (incl. beluga, bowhead, polar bear) with ancient DNA and stable isotope analysis. Specifically, your research would focus on investigating patterns of demographic change and shifts in foraging ecology. The fossil data will be understood in the context of the genomic diversity and structuring of contemporary populations. The project includes working in a clean lab environment for ancient DNA data generation, and bioinformatic processing and analysis of the data. The PhD student is expected to first-author papers in international peer-reviewed journals. The PhD student will work closely with collaborators in Canada and Greenland during the project, and with the other members of the Molecular Ecology and Global Climate Change group.
Tasks
The key tasks as a PhD fellow at the Globe Institute are:

- Carrying through an independent research project under supervision
- Completing PhD courses or other equivalent education corresponding to approximately 30 ECTS points
- Participating in active research environments including conducting a stay at another research institution
- Obtaining experience with teaching or other types of dissemination related to your PhD project
- Writing a PhD thesis on the grounds of your project
Requirements
Key criteria for the assessment of applicants:

Candidates must have qualifications corresponding to a master’s degree related to the subject area of the project, e.g. ancient DNA, palaeoecology, evolutionary ecology, population genomics, or a related field. Please note that your master’s degree must be equivalent to a Danish master’s degree (two year duration).

The Globe Institute is looking for a highly motivated and enthusiastic scientist with the following competencies and experience:

- Professional qualifications relevant to the PhD project
- Documented experience working in a molecular biology lab; experience working in a clean lab environment is a plus
- Strong bioinformatic skills
- Experience with quantitative analysis of data
- A curious mind-set with a strong interest in combining molecular lab work in the natural and cultural history of the Arctic
- Proficient communication and interpersonal skills, the ability to work in teams, and an openness to other cultures
- Excellent English skills, written and spoken
Applications
The application must be submitted electronically by clicking ‘Apply now’ on this webpage: https://candidate.hr-manager.net/ApplicationInit.aspx/?cid=1307&departmentId=19217&ProjectId=161431&MediaId=5&SkipAdvertisement=false.

The application must include the following documents in PDF format:

1. Motivated letter of application (max. one page)
2. CV incl. education, experience, language skills and other skills relevant for the position
3. Copy of MSc thesis
4. Certified copy of original Master of Science diploma and transcript of records in the original language, including an authorized English translation if issued in a language other than English or Danish. If not completed, a certified/signed copy of a recent transcript of records or a written statement from the institution or supervisor is accepted. As a prerequisite for a PhD fellowship employment, your master’s degree must be equivalent to a Danish master’s degree. The Institute encourages you to read more in the assessment database: https://ufm.dk/en/education/recognition-and-transparency/find-assessments/assessment-database. Please note that they might ask you to obtain an assessment of your education performed by the Ministry of Higher Education and Science
5. Publication list (if possible)

Application deadline: 13 May 2024, 23.59pm CET.

The Institute reserves the right not to consider material received after the deadline, and not to consider applications that do not live up to the abovementioned requirements.

All qualified applicants will receive full consideration. Candidates who, through their research, teaching, and/or service, contribute to diversity and competencies of the Institute are encouraged to apply. The University of Copenhagen strives to offer a family friendly and flexible working environment with a sustainable balance between work- and private life, including parental leave schemes (up to 47 weeks for both parents) and up to six weeks of paid holidays per year. The university offers a variety of services for international researchers and accompanying families. See the International Staff Mobility website for more details.
Application deadline
Further information
To view the full advert, please visit: https://candidate.hr-manager.net/ApplicationInit.aspx/?cid=1307&departmentId=19217&ProjectId=161431&MediaId=5&SkipAdvertisement=false

For specific information about the PhD fellowship, please contact the principal supervisor: Professor Eline Lorenzen elinelorenzen@sund.ku.dk

General information about PhD studies at the Faculty of Health and Medical Sciences is available at the Graduate School’s website: https://healthsciences.ku.dk/phd/guidelines/

After the expiry of the deadline for applications, the authorized recruitment manager selects applicants for assessment on the advice of the hiring committee. All applicants are then immediately notified whether their application has been passed for assessment by an unbiased assessor.

The assessor makes a non-prioritized assessment of the academic qualifications and experience with respect to the above-mentioned area of research, techniques, skills and other requirements listed in the advertisement.

Once the assessment work has been completed each applicant has the opportunity to comment on the part of the assessment that relates to the applicant him/herself.

You find information about the recruitment process at: http://employment.ku.dk/faculty/recruitment-process/

The applicants will be assessed according to the Ministerial Order no. 242 of 13 March 2012 on the Appointment of Academic Staff at Universities.
Contact email
elinelorenzenatsund.ku.dk