Postdoc opportunity: Modeling carbon cycle dynamics and their feedback mechanisms on climate change

Our colleague Sandra Arndt is looking for a postdoctoral fellow interested in developing and applying numerical models to study carbon cycling dynamics and their feedback mechanisms on climate change.

The successful candidate will write an MSCA funding proposal to join iC3’s vibrant community of 25+ early career researchers. (See all 12 open postdoc opportunities with iC3 here.) 

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What is the focus of your research?

My research focuses on the cycling of carbon, with a particular emphasis on organic carbon cycling across various interfaces within the Earth system. This research spans multiple timescales—past, present, and future—and examines processes at different spatial scales, from local ecosystems to global dynamics. I am particularly interested in how carbon cycles through these interfaces and how this influences global biogeochemical cycles and climate.

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Why is this research important?

This research is vital because the carbon cycle is a fundamental component of the Earth's climate system. Understanding how carbon moves and transforms across different interfaces—such as between land and ocean or ocean and sediments—is essential for understanding and predicting climate change impacts. Interfaces are dynamic zones where energy and material fluxes converge, often mixing diverse influences and processes. Traditionally, these areas have been divided into disciplinary silos and studied in isolation. However, these systems are interconnected, and boundaries between these systems are not only hard  to define, but also often very fluid. My work seeks to develop a more boundless understanding. 

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How do you conduct your research?

My research primarily involves modeling, where I develop and apply numerical models to study the carbon cycling. These models help disentangle the complex process interplay and predict future scenarios. However, my work is deeply collaborative, involving partnerships with field scientists who collect observational data and laboratory researchers who conduct experiments. This interdisciplinary approach is central to my research, as it allows for a comprehensive understanding of the systems I study. While my lab focuses on modeling, we occasionally conduct experimental work to address specific gaps in our understanding, ensuring that our models are grounded in empirical data.

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Can you give an example of a concrete application of your research?

A recent project focused on subsea permafrost, which is permafrost that formed on land during the last glacial maximum and is now submerged on the Arctic shelf due to rising sea levels. This research is significant because the thawing of subsea permafrost could lead to the release of methane, a potent greenhouse gas, into the atmosphere. The challenge lies in modeling this complex system, which involves understanding both physical and biogeochemical processes. Our collaborative effort included working with various research groups to model the spatial distribution of subsea permafrost, its thawing, and the potential methane fluxes under different climate scenarios. This project required integrating data from multiple sources and disciplines, highlighting the importance of interdisciplinary collaboration in addressing complex environmental issues.

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What technologies or methodologies are you most excited about in your field?

I am particularly excited about the advancements in computing power and artificial intelligence. The explosion in computing capabilities has been a game-changer, allowing us to run more complex models and simulations than ever before. This has opened up new possibilities for understanding global systems and their interactions. Artificial intelligence, in particular, holds great promise for spatial modeling and data analysis, offering new ways to interpret and predict environmental changes. These technologies are transforming the way we conduct research and are integral to advancing our understanding of the Earth system.

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What qualities and skills do you look for in a postdoc or collaborator?

When looking for a postdoc or collaborator, I value qualities such as openness, dynamism, and resilience. Being a good team player and having a collaborative spirit are essential, as research is often a collective effort. I also appreciate individuals who bring diverse perspectives and skills to the table, as this enriches the research process and leads to more innovative solutions. Ultimately, I seek collaborators who are not only skilled and knowledgeable but also passionate about their work and committed to advancing our understanding of the Earth system.

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What do you like about working at the Free University of Brussels?

At the Free University of Brussels, I appreciate the high level of academic freedom. This freedom enables me to pursue innovative research directions and foster a collaborative and dynamic research group. My lab, the Biogeochemistry and Modeling of the Earth System (BGEOSYS) Lab, is special because of its strong quantitative focus and interdisciplinary approach, bridging different aspects of Earth system modelling. This environment encourages creativity and collaboration, allowing us to tackle complex scientific questions from multiple angles and across scales.

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How did you reach your current position at the Free University of Brussels?

My academic journey began in Germany at the Carl von Osietzky Universität in Oldenburg, where I studied marine sciences. This interdisciplinary course provided a strong foundation in various scientific disciplines and sparked my interest in oceanography and modeling. During my studies, I had the opportunity to participate in an Erasmus exchange program at the University of Las Palmas in Gran Canaria, which further fueled my passion for marine sciences. I pursued a master's project on modelling  organic matter degradation in deeply buried Cretaceous black shale sequences drilled during ODP Leg 207 at Demerara Rise. The degradation of this old organic matter by methanogens now fuels the deep biosphere at these sites. My interest in diagenetic modeling led me to a Ph.D. at the University of Utrecht. Then I moved to Toulouse for a first postdoc and then on to Bristol. There, I focused on paleo climate reconstructions and climate models. My career path has been shaped by chance encounters, opportunities and collaborations, leading me to my current position as a professor at the Free University of Brussels, where I continue to explore the complexities of carbon cycling and climate change.

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What do you enjoy doing outside of work?

Outside of work, I enjoy spending time outdoors. I find that being in nature provides a sense of balance and perspective, which is essential given the demands of academic life. Balancing professional and personal life can be challenging, especially with a young family, but having other interests and hobbies helps. I also enjoy cultural activities such as visiting museums, attending concerts, and exploring new places. Surrounding myself with people from different backgrounds provides fresh perspectives and enriches my personal life.

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Do you have any final thoughts or a personal motto you would like to share?

While I don't have a specific personal motto, I believe in the importance of curiosity and openness in both life and research. Being open to new ideas, perspectives, and opportunities has been a guiding principle throughout my career. It allows for growth, innovation, and the ability to adapt to changing circumstances. Embracing curiosity, openess and team work can lead to unexpected discoveries and a deeper understanding of the world around us.

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If you are interested in applying for an MSCA postdoctoral fellowship with Sandra, please read this first and then send her an email briefly outlining your proposed research project and enclose your CV.  

The iC3 team will support the selected candidate throughout the process of writing a strong MSCA fellowship proposal. More information on MSCA opportunities with the iC3 Polar Research Hub and our support programme here.