Doctoral researcher (f_m_x) – Terrestrial and Cryo-Hydrological Gravimetry [english] in Potsdam

The GFZ Helmholtz Centre for Geosciences is one of the world's leading institutions in the field of geosciences. As part of the Helmholtz Association, Germany's largest research organisation, we address global challenges such as natural hazards, climate change and the sustainable use of resources. In doing so, we combine cutting-edge research with social relevance. Our international staff - around 1,200 employees and approx. 500 guests - work in a multidisciplinary way and with a unique infrastructure to research the dynamic processes of the Earth system. Our vision: “Taking the pulse of the Earth to safeguard a habitable planet.”

Doctoral researcher (f_m_x) – Terrestrial and Cryo-Hydrological Gravimetry

Reference Number 11591

The GFZ department "Geodesy" has five independent sections that together advance the goals of the Helmholtz research programme "Changing Earth - Sustaining our Future" and provide important GFZ services and infrastructure within the Modular Earth Science Infrastructure (MESI). With this call, we are looking for a PhD student for section 1.2 "Global Geomonitoring and Gravity Field". This section focuses on developing and operating infrastructure for gravity field observations from global to local scales, with applications spanning geodynamic and climatic processes, water budgets, and hazard monitoring.

The PhD position is part of the ERC Synergy Grant Project "SnowShifts - Current and future shifts of snow regimes in extreme environments" seeking to significantly enhance our comprehension of snow volume and mass, their non-linear dynamics and properties and, specifically, snow regime shifts within the Earth and climate systems. The PhD student will be embedded in a highly vibrant team of PhD students and Postdocs from the project partners at the University of Oslo, BOKU Vienna, EPFL Lausanne and CNRS CESBIO Toulouse. The PhD student will be responsible for high-resolution snow mass quantification at local scales based on superconducting gravimetry at focus sites in high mountains (Zugspitze, Lhasa) and polar regions (Ny-Ålesund, Syowa, Jang Bogo). The joint analysis of terrestrial and satellite gravimetry will be carried out in a team with a Postdoc who will be responsible for the quantification of regional snow mass variations using spatio-temporally downscaled data from the GRACE/GRACE-FO and the upcoming GRACE-C satellite missions.

Your responsibilities:

• Process and analyse time series of temporal gravity variations from superconducting gravimeters
• Implement a state-of-the-art toolbox for processing superconducting gravimeter time series
• Quantify snow water equivalent variations based on superconducting gravimeter time series
• Work on the gravimetric subproject in SnowShifts with personal responsibility and highly interdisciplinary cooperation with the external project partners from cryospheric sciences and remote sensing as well as colleagues from GFZ
• Write scientific publications and present results at project meetings and conferences
• Prepare a PhD thesis

About You:

Essential Qualifications:

• Completed academic university degree (master's, diploma or equivalent) in Geodesy, Geophysics, Geosciences, Physics or a similar subject
• Knowledge of temporal gravity field variations and their observation from space and from the Earth's surface
• Experience in time series analyses and statistics
• Good programming skills, e.g. in Python, MATLAB, FORTRAN
• Ability and willingness for fieldwork in high-alpine and polar regions
• Good communication and interpersonal skills
• Very good command of English

Desirable Qualifications:

• Knowledge of the German language

What we offer:

• Ambitious and varied tasks in a dynamic and international research environment
• State-of-the-art equipment
• Public service benefits
• Extensive training opportunities
• Professional career advice offered by our in-house Career Centre
• Flexible working hours and conditions
• Support with finding a good work-life balance offered by benefit@work
• Institute day-care centre on site
• Working at the Albert Einstein Science Park on the Telegrafenberg in Potsdam
• Workplace within walking distance of Potsdam main train station, or just a short ride on the shuttle bus

Start date: 1st February 2027
Fixed-term: 3 Jahre
Salary: Die Stelle ist nach TVöD Bund mit der Entgeltgruppe 13 bewertet. Die Eingruppierung erfolgt nach den tariflichen Bestimmungen und den entsprechenden persönlichen Voraussetzungen.
Working hours: Teilzeit 75% (derzeit 29,25 h/Woche)
Place of work: Potsdam

Required documents: CV, letter of motivation

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