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Dr. Oscar Widerberg is an Assistant Professor at the Institute for Environmental Studies (IVM).He study and teaches global sustainability governance, primarily focusing on the connections between state and non-state actors.

Dr. Widerberg teaches and coordinates courses on environmental policy and research methods in the Environment and Resource Management (ERM) Master programme. He conducts resarch on policy and governance for sustainability, primarily on the international and transnational level.

Oscar is a fellow to the Earth System Governance project, a member of the Swedish think tank FORES Reference Group on International Climate Policy, and member of INOGOV’s Early Career Investigators’ Network (ECIN). He has published academic articles, policy reports, debate articles and book chapters on a variety of global environmental issues. He regularly participates in the public debate on environment, climate and energy, among other, through radio appearances, UNFCCC side-events, and open lectures.

Before joining IVM, Oscar worked in international consulting firms Trinomics and Ecorys, advising international public authorities, primarily European institutions, on environmental, energy and climate policies. He also carried out traineeships at the European Commission’s delegation to the United Nations in New York; the United Nation DESA’s Division on Sustainable Development in New York; and, the European Climate Foundation in the Hague.

Oscar holds a PhD from Vrije Universiteit Amsterdam, an MSc in Environmental Science from Utrecht University and a BSc in International Relations from Malmö University. He is a Swedish native, speaks English and Dutch, and has a working knowledge of Danish, Norwegian and, to a lesser extent, French.


My research focuses on changing structure and agency in global environmental governance (GEG). The goal is to understand the causes, state, effects and management options for fragmentation in GEG. Fragmentation implies that international politics has changed fundamentally with the proliferation of actors and agreements governing different issue areas such as climate change and biodiversity, and create governance overlaps and gaps. In my research, I strive to combine quantitative (social) network approaches (SNA) and statistics with qualitative analysis from political science, international relations and sociology.


2017: PhD from Vrije Universiteit Amsterdam, the Netherlands

2009: MSc in Environmental Science, Utrecht University, the Netherlands.

2006: BSsc in International Relations, Malmö University, Sweden.


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governance Social Sciences
climate Social Sciences
United Nations Framework Convention on Climate Change Earth & Environmental Sciences
climate change Social Sciences
UNO Social Sciences
global governance Social Sciences
climate policy Social Sciences
sustainable development Social Sciences

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Research Output 2013 2019

A research roadmap for quantifying non-state and subnational climate mitigation action

Hsu, A., Höhne, N., Kuramochi, T., Roelfsema, M., Weinfurter, A., Xie, Y., Lütkehermöller, K., Chan, S., Corfee-Morlot, J., Drost, P., Faria, P., Gardiner, A., Gordon, D. J., Hale, T., Hultman, N. E., Moorhead, J., Reuvers, S., Setzer, J., Singh, N., Weber, C. & 1 othersWiderberg, O., Jan 2019, In : Nature Climate Change. 9, 1, p. 11-17 7 p.

Research output: Contribution to JournalArticleAcademicpeer-review

research and development
technical language

Complex Systems and International Governance

Orsini, A., LePrestre, P., Haas, P., Brosig, M., Pattberg, P. H., Widerberg, O. E., Gomez-Mera, L., Morin, J-F., Harrison, N., Geyer, R. & Chandler, D., 19 Mar 2019, In : International Studies Review.

Research output: Contribution to JournalArticleAcademicpeer-review

international relations
global governance

Hybrid accountability in cooperative initiatives for global climate governance

Widerberg, O. E., Pattberg, P. H. & Brouwer, L., Feb 2019, Global Environmental Governance and the Accountability Trap. Park, S. & Kramarz, T. (eds.). Cambridge, MA: MIT Press, p. 121-142 21 p. (Earth system governance ).

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Opportunities for the Action Agenda for Nature and People

Kok, M., Widerberg, O. E., Negacz, K. E., Bliss, C. & Pattberg, P. H., 28 Jun 2019, The Hague: PBL Netherlands Environmental Assessment Agency. 36 p. (PBL policy Briefs; vol. 3630)

Research output: Book / ReportReportAcademic

Open Access

Smart mixes and the challenge of complexity: the example of global climate governance

Pattberg, P. H. & Widerberg, O. E., 2019, Smart Mixes for Transboundary Environmental Harm. van Erp, J., Faure, M., Nollkaemper, A. & Philipsen, N. (eds.). Cambridge: Cambridge University Press, p. 49-68 20 p. ( Cambridge Studies on Environment, Energy and Natural Resources Governance ).

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Activities 2017 2017

  • 1 PhD thesis examination

Exploring structure, performance and coordination in a fragmented global climate governance system

N.A. de Graaff (Examiner)
2017 → …

Activity: PhD thesis ExaminationPhD thesis examination