The ensemble Kalman filter (EnKF) and its versatile variants are renowned for their remarkable data assimilation capabilities in diverse domains such as atmospheric, oceanic, hydrologic, biomedical, biologic, and petroleum reservoir systems. By providing a platform for thought-provoking presentations and meaningful discussions, the EnKF workshop seeks to foster collaboration among technical experts, practitioners, researchers, and students. Together, we will showcase cutting-edge research findings, exchange practical insights, and collectively explore uncharted territories by identifying crucial challenges. Join us to deepen your knowledge, expand your network, and contribute to the advancement of data assimilation.


Indoor pool. Also connected to an outdoor (heated) pool Bird's eye view of hotel Fjord swimming access
Images from venue



  • Participants must arrange their own travel to/from Bergen.
  • A chartered bus will take us from downtown Bergen to Solstrand hotel.
  • The unsession will consist of an open discussion on benchmarking. The sharing and adaption of open benchmark models and datasets is one of the fuels powering the rapid progress of ML and AI. The DA community has a handful of well-known benchmark models, but implementations vary and comparisons are not always straightforward. On the data side, there is much scope for improvement. In this guided discussion, we will ask, “What do we have?”, “What do we need?”, and “How will we get there?”. We will not solve the issue, but we will emerge with a better understanding of what needs to be done, and who is up for doing it!
  • There are some moderate hiking opportunities in the area.
  • The hotel includes pools with spa facilities, with access to the fjord for more daring swimmers.

Invited speakers

Alban Farchi
CEREA, École des Ponts ParisTech, France

Tijana Janjic Pfander
KU, Germany

Chris Snyder

Julien Brajard
NERSC, Norway

Berent Å. S. Lunde
Equinor, Norway


  • The deadline for abstract submissions has passed (March 29).
  • Attendance at the workshop is contingent on payment of the conference fee.
    • Including meals and a hotel room for 2 nights the fee is NOK 9,800 (around 845€).
    • Without overnight hotel stay (i.e. only included meals are lunch and coffee) the fee is NOK 6,700.
  • Non-presenting attendees can register until June 3 (subject to availability), by sending an email to with their name, affiliation, phone number, and any dietary requirements or other remarks. They will receive a link to complete their registration by settling the fee (same as above).


The EnKF is a data assimilation method that was co-invented and has been continuously developed by researchers at NORCE and NERSC. Over the last three decades, the EnKF and related ensemble methods, has emerged as a highly effective and widely adopted approach for data assimilation in large-scale models, and have made profound impacts on the advancements of various disciplines and promoted value creations for relevant industries.


While the fundamental concept of ensemble methods is simple, practical implementations often demand problem-specific modifications for success. Our workshop aims to bridge the expertise of specialists from various fields to investigate the foundations and interconnections of EnKF-related methods that have demonstrated effectiveness in diverse environments. In so doing, we strive to enhance the robustness and efficiency in applications. Beyond practical applications, this gathering also facilitates the exchange of innovative research ideas, methods, algorithms, and workflows with the potential to further enhance the performance of EnKF and related approaches.


In 2006, the inaugural EnKF workshop was held in Voss, Norway, marking the beginning of an annual tradition. Throughout the years, the EnKF workshop has consistently attracted participants from a wide range of scientific disciplines. The cross-pollination of ideas and the exchange of scientific advancements have fostered vibrant discussions and elevated the workshop’s scientific calibre to a high level. As a result, the annual international EnKF workshop has now established itself as a paramount event within the data assimilation community.

Listing of previous workshops



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