The Royal Netherlands Institute for Sea Research (NIOZ) invites applications for a PhD position focused on unravelling the seasonal cycle in regional sea-level change. Based in the Estuarine and Delta Systems (EDS) department, this project is led by Dr. Aimée Slangen and Prof. Dr. Roderik van de Wal, and is funded by the NWO and NSO 'use of space infrastructure for earth observation and planetary research (GO)' call. NIOZ is the Dutch national oceanographic institute, renowned for its multidisciplinary marine research and its support for education and policy development. The EDS department specializes in understanding the interactions between organisms and their physical and chemical environments in estuaries and deltas, aiming to provide integrated knowledge for sustainable use and restoration of these systems.

The sea-level group at NIOZ investigates large-scale patterns in sea-level change, which are crucial for coastal regions worldwide. This PhD project addresses the central question: how and why does regional sea-level change vary on seasonal time scales? Sea-level changes are driven by diverse processes, including tides, storms, ocean warming, and land ice mass loss. Recent advances in satellite observations have enabled a deeper understanding of regional sea-level variations, and this project aims to further explore the temporal resolution, focusing on substantial seasonal variations and their different drivers. These insights are vital for coastal adaptation and protection, as impacts of sea-level rise often occur during specific times of the year, such as storm seasons.

The successful candidate will analyze satellite altimetry data from 1993 onwards, assessing the magnitude and spatial variability of seasonal sea-level signals. The research involves combining observational contributions in a seasonal sea-level budget analysis to identify knowns and unknowns in the field. The outcomes will complement ongoing efforts to understand regional 20th-century sea-level changes, benefiting coastal communities facing adaptation challenges.

Applicants should hold an MSc degree in climate physics, physical geography, oceanography, or meteorology, and have experience with large and complex datasets, scientific programming (preferably Python), and climate change research. Strong communication skills in English and a collaborative attitude are essential. NIOZ values inclusivity and a healthy working climate, encouraging applicants from diverse backgrounds.

The position is full-time for four years, with an initial one-year appointment extended upon positive evaluation. Salary is compliant with Dutch Research Institutes, and benefits include a pension scheme, holiday allowance, year-end bonus, full reimbursement for public transportation, employment benefits plan, relocation expenses for international employees, and support with accommodation.

Applications should be submitted via the NIOZ portal. For vacancy-related questions, contact Dr. Aimée Slangen; for procedural questions, email [email protected]. The application deadline is March 15, 2026.