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PhD position, geochemistry - Zaragoza, Spain

Zaragoza, Spain
Instituto Pirenaico de Ecologia

The Quaternary Palaeoenvironments group of IPE-CSIC offers:

• Training to develop a future research career, with the possibility of exploring options outside
• 4-year AEI contract for the completion of a doctoral thesis (according to salary tables for the year
2022, 12 payments which, depending on personal situation, is ca. 1300€/month with annual
salary increase according to Spanish IRPF and additional from the third year onwards).
• Additional training opportunities within the framework of the CSIC, but also financed by the
group's own projects.
• Working in an international environment with several programmed research stays (e.g.,
Germany and Austria).
• Participation in national and international conferences.
• Possibility of personal and professional development in "soft skills" (dissemination, oral
expression techniques, communication, etc.).
• Excellent working environment that promotes each person’s skills and individual development.
TEMPURA: TEMPeratUre Reconstruction At
past rapid climate transitions

TEMPURA proposal is aimed to quantify the temperature change in past rapid climate events in Iberia, focusing on those transitions that represent a large temperature change (above 2°C) in a short time period (decades-centuries) during
glacial terminations and during the Holocene. We are going to apply for the first time in Iberia Peninsula a combination of novel geochemical quantitative proxies in speleothems and lake sediments that, after a robust calibration, will produce temperature estimations for past abrupt changes.

Those indicators are:
(i) the isotopic composition of fluid inclusions,
(ii) the clumped isotopes and
(iii) the composition in branched- glycerol dialkyl glycerol tetraethers (branched-GDGTs).
We are looking for a doctoral candidate who will carry out the following tasks:

• Field work: monitoring survey in high mountain lakes and caves; sediment coring and speleothem sampling
• Laboratory tasks: carrying out multiproxy geochemical analyses in collaboration with national and international specialists in the three proposed techniques (fluid inclusions, clumped isotopes
and GDGTs). Sample preparation for U-Th and 14C dating
• Publication of results in international journals, dissemination at scientific conferences and
outreach events.
The essential requirements expected of candidates are:

• Degree in geology, chemistry or environmental sciences
• Additional training in geochemistry would be important
• Master's degree related to geochemistry, environmental sciences or global change.
• Independence and ability to self-organise, as well as a collaborative spirit and teamwork.

Requirements not essential, but desirable, of the candidates are:

• Proficiency in English, especially written.
• Ability to do field work as well as laboratory work.
• Curiosity, motivation and enthusiasm.
• Ability to communicate with different audiences and social skills.
Application deadline
Further information
For more information, address Ana Moreno Caballud,
(, ORCID: or Blas
Valero Garcés, (; ORCID:
Contact email

Permanent Researcher / Senior Researcher position, ocean modelling - Bergen, Norway

Bergen, Norway
For the right candidate we offer:

• A great opportunity to develop an independent research agenda in line with the strategic goals of NORCE Climate and the Bjerknes Centre.
• A varied and flexible working day.
• An excellent and professionally inspiring working environment.
• Career development support such as courses, workshops, training in leadership, and project proposal development and writing.
• A competitive salary.
• Excellent welfare benefits.
We are looking for a researcher that brings oceanographic expertise to the application and analysis of the Norwegian Earth System Model (NorESM) in close collaboration with a wide range of earth system modellers at NORCE and the Bjerknes Centre for Climate Research (BCCR) and the national NorESM consortium. The successful candidate is expected to contribute with modelling expertise to a vibrant national paleoclimatic community as well as develop a relevant research agenda.

We offer an exciting job opportunity in the field of global ocean and earth system modelling. The position is full time and permanent, and initially funded for 2 years, primarily through the Research Council of Norway project ABRUPT Arctic Climate Change. By combining reconstructions of Dansgaard-Oeschger (DO) events occurring in the 30-40 ka time interval with multi-model simulations, ABRUPT will chart the distribution of sea ice and ocean states in the Nordic Seas during past abrupt changes to further our understanding of these enigmatic large scale climate shifts. This includes exploring how they might be relevant for future Arctic change.

Smaller involvement in other ongoing projects, with similar competence required, must be expected. The successful candidate is expected to attract own funding through externally funded projects to support his/her position as well as bringing in new junior positions such as PhD students or postdocs. NORCE provides technical support to train its employees to develop and write competitive research proposals.
With the initial funding primarily funded though the ABRUPT project, the successful candidate is expected to contribute to the project tasks and deliverables, which involves taking part in multi-model analysis and contribute to the dynamical understanding of DO-events and their relevance to current and future changes in the Arctic.

We also expect the successful candidate to:

• Actively engage and get involved with the community developing and maintaining NorESM and in particular its ocean component BLOM.
• Liaise with colleagues at NORCE and the Bjerknes Centre to develop own project ideas and apply for external funding.
• Engage with the public and contribute to outreach activities of NORCE and the Bjerknes Centre.
• Contribute to supervising postdocs and PhD students.
• Publish results in high level peer reviewed journals.
The successful candidate must have a PhD in physical oceanography, climate science, atmosphere science, or similar field. Depending on the amount of additional work experience we can offer a junior Researcher or a Senior Researcher position.

Qualifications, skills and abilities:

• Experience in ocean and climate modelling.
• A strong general background and experience in ocean and climate dynamics.
• Skills in handling, analysing and visualizing large model data sets.
• Experience in working with Linux/Unix environments and with high level programming languages (e.g., FORTRAN, Python, Matlab, R) is required.
• Ability to work across disciplines, e.g., bridging modelling and observational approaches, in particular the ability to work closely with the paleo proxy community.
• Evidence of the ability to attract external funding.
• Track record of peer reviewed publications in high level international journals.
• Good team working skills while being proactive.
• Proficiency in both written and oral English.
Your application must include:

• A short (max 2 page) research statement describing your research interests, motivation for applying for the position and future research plans.
• A full CV.
• A list of scientific publications and manuscripts in preparation including a short summary of your contribution to each one.
• The names and contact information of at least two references.
• Transcripts, diplomas and relevant certificates.
• The application and appendices with certified translations into English or a Scandinavian language must be uploaded at our recruitment portal Jobbnorge.

Application deadline: October 20th, 2023.

Candidates are expected to openly offer all relevant information about themselves during the recruitment process. Furthermore, one can expect that background checks can be conducted on all final candidates who may be checked against relevant lists to ensure compliance with applicable export control and sanctions rules. Candidates will be asked to provide information about affiliation to high-risk countries for a security assessment.
Application deadline
Further information
Contact email

Postdoctoral Researcher (24 months), marine geochemistry and stratigraphy - Bremen, Germany

Bremen, Germany
position for one Postdoctoral Researcher (f/m/d) for 2 years
German federal salary scale 13 TV-L (100 %)
The position is to commence at the earliest possible date with a duration of two years.
Closing date: 10/16/2023
MARUM is currently searching a highly motivated and excellently qualified postdoctoral scientist with a recent PhD degree and research experience in marine geochemistry and stratigraphy working with scientific ocean drilling data for a project entitled "In2Cretaceous – evaluating the potential of equatorial Pacific Shatsky Rise sedimentary deposits for extending high resolution paleoceanographic reconstructions from the Maastrichtian into the Campanian (72 to 84 Ma)". The project will be conducted within the Priority Programme SPP527 "International Ocean Discovery Program" (IODP) framework of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation).
The Postdoctoral Researcher (f/m/d) will conduct X-ray fluorescence core scanning and bulk carbonate stable carbon and oxygen isotope analysis as well as compile existing records to establish a global geochronological reference for the Campanian Stage to guide future paleoceanographic research. The Postdoctoral Researcher (f/m/d) will also contribute to the development of international scientific drilling expedition proposals in the equatorial Pacific region to recover Late Cretaceous to Paleogene sediments within workshop frameworks.
• Scientific university degree (master/university diploma) and a doctorate (Ph.D./Dr. rer. nat.) in paleoclimatology, paleoclimate data analysis, stratigraphy.
• Good organisational and communication skills
• Proficient spoken and written academic English
• Experience in XRF core scanning data acquisition and processing
• Experience in carbonate stable carbon and oxygen isotope analysis
• Experience in time series analysis and astronomical age model construction
• Experience in handling of scientific ocean drilling data sets
• Interest in Late Cretaceous and Paleogene stratigraphy
• Basic knowledge in interpreting seismic profiles to identify drilling locations
• Interest in organising scientific workshops and meetings
• Skills/interest in working with larger datasets/databases
• Skills in data analysis platforms and scientific programming (e.g., Matlab, R, Python, IGOR Pro)
• Ability to work both independently and as part of a diverse/heterogeneous team
• Ability to travel to and work in the USA for 3 weeks or more
Applications should include a letter of motivation (outlining your interest in the position and how the selection criteria listed under “Your profile” are met), CV, copies of scientific degree certificates with grades, publication list, synopsis of doctoral dissertation (one page), and contact details for 2-3 referees.

Applications should be submitted with the reference number A182/23 by 16 October 2023

MARUM – Center for Marine Environmental Sciences
University of Bremen
Dr. Thomas Westerhold
Leobener Strasse 82
28359 Bremen, Germany

or electronically as ONE (!) PDF file to
Application deadline
Further information
Contact email

Research Associate, climate system and carbon cycle coupling - Cambridge, UK

Cambridge, United Kingdom
Location: Department of Geography, Downing Site, Cambridge CB2 3EN
Working pattern: Monday to Friday
Hours of work: 37 hours per week (100%)
Length of appointment: 24 months
Limited funding: This position is funded by the Centre for Climate Repair at Cambridge for a duration of 24 months
Probation period: 6 months
Salary range: £36,024 - £44,263
Staff Group: Research
Department / Institution: Geography
Applications are invited for the Arnell Post-Doctoral Research Associate position for a fixed-term of 24 months to work on a project funded by Downing College and in collaboration with the Centre for Climate Repair. The post holder will be based at the Department of Geography and will work under the guidance of Dr Francesco Muschitiello and Dr Matthew Osman.
To better predict the long-term climate impact of future anthropogenic CO2 emissions, it is essential that we quantify mechanisms of climate system and carbon cycle coupling over centennial to millennial timescales. The last 50,000 years offer an ideal natural laboratory to investigate such climate-carbon cycle feedbacks. This period was punctuated by multiple abrupt climate shifts and large-scale climatic reorganizations, each mediated by changes in the partitioning of carbon across various atmosphere, ocean, and terrestrial reservoirs. However, the spatial and temporal dimensions of carbon sinks versus sources, including their relationship to atmospheric CO2, remain poorly quantified.

Climate model experiments are widely used to evaluate climate-carbon cycle feedbacks over short time frames, but require additional validation from paleoenvironmental proxies across centennial and longer timescales. To more explicitly facilitate the testing and constraining of models beyond the limits of present-day climate scenarios, this project will apply paleo-data assimilation to generate the first proxy-constrained, spatiotemporally continuous global carbon-cycle reanalysis of the last 50,000 years. This will be done by combining transient simulations from climate system models of intermediate complexity with geochemical proxies to investigate drivers and modes of carbon-cycle variability over centennial and millennial timescales.

The successful candidate will i) perform transient climate model simulations using a wide range of forcing and boundary conditions to produce an ensemble of climate and carbon-cycle states from our models, and ii) apply data assimilation techniques to produce a complete reanalysis of climate and carbon-cycle change for the past 50,000 years.
We seek a motivated scholar interested in applied scientific programming and data analysis. Eligible candidates must have a PhD (or equivalent degree) in Climate Physics, Applied Mathematics, Earth Sciences or allied disciplines. A background in paleoclimate modelling and (or) experience in data assimilation is desirable, as is familiarity with interpreting paleoenvironmental proxy data. The candidate must be highly motivated and have excellent time management, organisational and communication skills, and be able to work well as part of a team. The successful candidate will be primarily based in Cambridge, with secondments to Sydney & Hobart, Australia, and (or) Corvallis, Oregon expected over the course of the project to work closely with international collaborators. The candidate will have the opportunity to participate in a wide range of activities within the Centre for Climate Repair and the Department of Geography, including the departmental 'Climate and Environmental Dynamics' research group, and reading groups and seminars across the University.
A full job description is available at this link To officially apply for the position, you must apply for admission through the University of Cambridge HR System. The application closes October 31, 2023.
Application deadline
Further information
Enquiries about applications should be addressed to Dr Francesco Muschitiello ( or Dr Matthew Osman (
Contact email

PostDoc, statistical paleoclimate data analysis - Potsdam, Germany

Potsdam, Germany
The goal of the PalMod project is to understand climate system dynamics and variability during the last glacial cycle. PalMod aims at simulating key periods of the last glacial cycle in transient mode with comprehensive Earth System Models. To achieve a higher level of understanding of natural climate variability at time scales of millennia, its governing processes, and implications for the future climate, PalMod brings together three different research communities: the Earth system modelling community, the proxy data community and the computational science community.
Searching for a postdoc candidate, ideally an expert in paleoclimatology and statistics to perform statistical reconstructions of regional to global climate variability from paleo-proxy evidence on centennial to millennial timescales. Together, with project partners from the University of Tübingen, you will perform a global characterization of the spectrum of climate variability across spatial scales and climate states from proxy data and PalMod simulations. You will be associated with the AWI research team Earth System Diagnostics ( working on ice-cores, tree rings, corals, sediment cores as well as statistical climate models and proxy forward models.
You will
Combine proxy-based estimates of variability from the ocean, land and icesheets to derive a global picture of regional climate variability across different climate states.
Develop statistical methods to estimate continental scale and global climate variability accounting for the uncertainties in the proxy chronologies.
Estimate continental and global climate variability from proxy data making use of the PALMOD data compilation
Contrast the regional variability estimates with the continental/ global estimates to characterize the spatial structure of climate variability.
Together with the partners from Uni Tübingen, you will compare the reconstructed variability with the variability estimated from PALMOD model simulations.
You will study the implications of the results for future projections of variability by rescaling the variability in the models, and by using the variability reconstructions as emergent constraints.
PhD or equivalent degree in physics, climate sciences, applied mathematics or a related field
Strong analytical and statistical skills
Proficiency in a programming language (preferably R, Matlab or Python)
Excellent English language skills, both written and spoken
Strong motivation and ability to carry out research both independently and as part of a team in an international environment
Detailed knowledge on climate reconstructions and paleo-proxy data and is an advantage
Knowledge of spectral analysis and/or Bayesian inference is an advantage
Experience with large datasets (e.g. model fields and paleoclimate proxy databases) is an advantage
Please submit your application by September 5th 2023, exclusively online.
Reference number: 23/171/D/Geo-b

To apply, visit:
Application deadline
Further information
Please contact Prof. Dr. Thomas Laepple (, +49(331)58174-5602) for further information.

This is a full-time position, limited to 3 years. It is also suitable for part-time employment. The salary will be paid in accordance with the Collective Agreement for the Public Service of the Federation (Tarifvertrag des öffentlichen Dienstes, TVöD Bund), up to salary level 13. The place of employment will be Potsdam.

Postdocs have to register with AWI's postdoc office PROCEED, thereby gaining access to a set of tailor-made career development tools.
Contact email

Postdoctoral Researcher, Ocean Modeling - Oregon, USA

Oregon, United States
A postdoctoral scholar position for 2 years is available at Oregon State University’s College of Earth, Ocean, and Atmospheric Sciences under the direction of Dr. Andreas Schmittner.

More information about the project is available at

Salary: Commensurate with qualifications and experience as per OSU

The position will be open until filled, at least until Sep. 30, 2023.

Preferable start date: Oct. 2023 – Jan. 2024.
Small-scale mixing in the ocean interior affects the large-scale global meridional overturning circulation (MOC) and tracer distributions. However, little is known about how and why mixing has changed in the past, nor what the effects of those changes were on circulation, climate and biogeochemical cycles. This project will examine ocean mixing in the modern and last glacial maximum (LGM) ocean using a combination of numerical modeling and existing observations. In the past, only mixing near sources of turbulence have been considered (near-field effects), but mixing more distant from turbulence sources, carried away by internal waves or wave/current/eddy interactions (far field effects) are now possible to include. New parameterization concepts of diapycnal mixing will be explored in the global coarse-resolution ocean component of an intermediate complexity climate model. Parameterizations of mesoscale eddies will also be evaluated. The model will be calibrated for the modern ocean with modern observations including physical and biogeochemical tracer distributions, and microstructure-based diffusivity estimates. Subsequently, it will be applied to the glacial ocean in a suite of experiments that cover uncertainties in forcing, circulation state and tidal energy input to the internal wave field. Glacial sediment data will be used to evaluate the model simulations and test hypotheses regarding effects of stratification, circulation geometry and tides on diapycnal mixing and effects of southern hemisphere wind changes on the carbon cycle and atmospheric carbon dioxide. The project would improve modeling of paleoclimate and future climate, and foster collaborations between physical oceanographers and paleoceanographers. New model code with user guide and documentation will be posted online with a webinar on model use provided. The project will support an early career post-doctoral investigator and a student. Personnel will be involved in outreach activities at a local museum and in public discussion forums.

Mixing and the meridional overturning circulation during the last glacial period remain controversial. Shoaling of the interface between North Atlantic Deep Water and Antarctic Bottom Water and increased stratification are two mechanisms that have been suggested to reduce diapycnal mixing. On the other hand, a shift of tidal energy input from the continental shelves to the deep ocean due to sea level lowering has been hypothesized to increase diapycnal mixing. A parameterization of far field mixing effects will be incorporated into the Oregon State University (OSU) version of the intermediate-complexity University of Victoria (UVic) global climate model. Tuning to modern ocean conditions using modern observations followed by assessment of LGM performance using available paleo observations will permit the examination of these science goals: to investigate how diapycnal mixing in the LGM compares to modern magnitudes; how potential differences may have affected the LGM MOC; and what the consequences of such effects would have been for the global carbon cycle. The parameterizations representing far field effects, tested and tuned in the OSU-UVic model, will also be ported to the newest version of the Modular Ocean Model (MOM6) of the Community Earth System Model (CESM), though extensive tuning, testing and evaluation with CESM is not planned. Abstract at NSF.
Effects of (i) internal waves and (ii) mesoscale eddies on ocean mixing will be explored in global climate models. Simulations of present-day and ice-age oceans will be conducted and compared to observations to assess how mixing affects ocean circulation, climate, and the cycling of biogeochemical and isotope tracers.
Applicants, particularly those from groups that are currently underrepresented in climate modeling, with a Ph.D. in oceanography, climate science, physics or a related field, and experience in numerical modeling are encouraged to apply.
Please send your CV and cover letter with the names and contact information of three references to
Application deadline
Further information
More information about the project is available at
Contact email

Post-Doctoral Researcher (34 months) - Maynooth, Ireland

Maynooth, Ireland
Start date: 1st September 2023 or as soon as possible thereafter
Duration: 34 months
The position will be based at Maynooth University within the climate research centre ICARUS ( and the Geography Department.
Salary: €42,033 per annum with annual increments
We are seeking a Post Doctoral Researcher to work on a Science Foundation Ireland funded project (PCARB: Investigating the past climate influence on the carbon accumulation rates of Irish blanket bogs). This project aims to assess how past changes in climate altered carbon accumulation in Irish blanket bogs, to inform estimates of potential future carbon sequestration. The PCARB team will consist of the P.I. (Dr Lisa Orme), a PhD student researching Holocene variability in carbon accumulation rates (Work Package 1) and the advertised postdoctoral researcher, who will lead Work Packages 2 and 3. Work Package 2 is an extensive assessment of carbon accumulation rates during the last millennium from sites across Ireland. The developed palaeo-environmental dataset, in combination with modelling of future blanket bog extent, will inform estimates of the likely future carbon accumulation by blanket bogs in Ireland (Work Package 3).
The appointee will retrieve peat cores from thirty blanket bog sites across Ireland from a range of elevations and across a gradient of key bioclimatic indicators (reflecting moisture and temperature gradients). Records of carbon accumulation during the last millennium (850-1850 AD) will be developed at each site and using modern climate averages, the relationship between climate variables and carbon accumulation will be assessed. The carbon accumulation rates will be measured by analysing the carbon content and bulk density along the sediment cores, in addition to estimating the age with tephrochronology and radiocarbon dating. This information will lead to estimates of future rates of carbon accumulation by blanket bogs in Ireland under different climate scenarios.

The postdoctoral research will then model future blanket bog extent using the bioclimatic envelope model PeatStash (Gallego-Sala et al., 2010), with training in the use of the PeatStash model provided if required.

In addition to helping achieve the project research goals, the postdoctoral researcher will also be required to support outreach activities. This will likely involve writing material for a public audience and helping to plan and implement several peatland outreach events.
• A PhD in geography, earth science, or other related discipline.

• Experience of conducting fieldwork, analysing sediments and/or conducting laboratory analyses.
• Knowledge of peatland ecosystems and carbon sequestration.
• Competency in statistical analyses.
• Competency in R (or similar language).
• Experience in delivering research projects to a high standard.
• A history of publication commensurate with career stage.
• Excellent oral, written and analytical skills.
• A valid driving license and willingness to drive on fieldwork.
Deadline: 23:30hrs (local Irish time) on Tuesday, 18th July 2023
Apply here:
Further information
For further information please contact Dr Lisa Orme at
Contact email