Universiteit Leiden

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Graduate School of Science

Environmental Sciences

PhD candidates carry out a programme of independent research and additional (limited) course work, culminating in production of a PhD thesis in typically 4 years.

Research Projects

A detailed description of the research projects can be found on the web site of the Institute of Environmental Sciences (CML).

PhD training programme

The PhD training programme consists of a number of professional courses and training in skills and personal effectiveness. The training programme is tailored to the needs of the PhD candidate and is determined in agreement with the supervisor of the thesis. Courses are offered by

The PhD thesis is written in English, the language commonly used in the research groups.

MSc degree

An MSc degree is required for admission to the PhD programme. If appropriate, the PhD degree will be a continuation of an MSc project. Next to an MSc degree more specific requirements relate to the specialisation chosen and are determined in agreement with the supervisor of the thesis. More information about the requirements and procedures are available.


Every year CML has a very limited number of paid positions within EU or NWO projects available for PhD candidates that are filled on a merit basis. A paid position includes limited assistance in undergraduate teaching. It may also be possible to enter the PhD programme with self-obtained grants. Grants must provide for costs and for a bench fee.

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