9th International Workshop on Sea Ice Modelling, Data Assimilation and Verification

A joint workshop of the International Ice Charting Working Group (IICWG), the Year of Polar Prediction (YOPP – the flagship activity of the Polar Prediction Project by the World Weather Research Programme (WWRP)), GODAE Oceanview (GOV) and the Coordination & Support Action KEPLER by the European Commission.

17-19. Juni 2019 hosted by the Alfred Wegener Institute at Haus der Wissenschaft, Bremen, Germany

Objective: This workshop builds on a series of successful workshops organized by the IICWG Data Assimilation Working Group to advance international capabilities for automated sea ice analysis and prediction on timescales from hours to a season. In conjunction with the Year of Polar Prediction (YOPP) organized by the WWRP-PPP and GOV, a particular need has been identified regarding the development of more mature and meaningful methods for sea ice verification. The focus of the workshop is to discuss cross-cutting issues in sea ice modelling and data assimilation and how deficiencies of current systems can be more efficiently diagnosed and addressed.

General topics considered appropriate for this workshop include:

  • Sea ice data assimilation (methods and results)
  • Sea ice observations and uncertainties
  • Sea ice model parameterizations and coupling to ocean and atmosphere models
  • Verification approaches for sea ice analyses and forecasts
  • Automated prediction systems

Organization: The workshop will be organized around presentations with ample time for discussion and a poster session.

Organizing Committee: Frank Kauker (AWI, OASys, KEPLER), Helge Goessling (AWI, PPP/YOPP, KEPLER), Laurent Bertino (NERSC, KEPLER), Mark Buehner (ECCC, IICWG-DAWG), Gilles Garric (MERCATOR OCEAN INTERNATIONAL, KEPLER), Leif Toudal Pedersen (eolab.dk, IICWG-DAWG, DTU, KEPLER), Lynn Pogson (ECCC) and Greg Smith (ECCC, PPP/YOPP, GOV).

Social Dinner: We will have a social dinner on Monday evening at the Schuettinger Gastbrauhaus, Hinter dem Schuetting 12-13, just 350m walking distance from the venue. We will meet there at 7:30pm.


Presentations and Poster of the Workshop

June 17, 2019

Sea Ice Observations and uncertainties

June 18, 2019

Sea ice model parameterizations and coupling to ocean and atmosphere models

Sea ice data assimilation (methods and results)


Skillful subseasonal sea ice edge prediction at both poles
Lorenzo Zampieri

Verification of sea ice prediction
Bimochan Niraula

High resolution sea ice drift and deformation data for model validation
Leif Toudal Pedersen

On the evelution of seasonal sea ice thickness distribution in the Laptev Sea: comparison between single-column model simulations and ULS observations.
Florent Birrien

Adopting observation operators for data assimilation of passive microwave data.
Trygve Halsne

Sea Ice Concentration from Passive Microwave Imaging Radiometers: from climate to NRT applications. Thomas Lavergne