The NOAA Sea Ice Modeling Collaboration Workshop was held in Boulder, Colorado, on the University of Colorado’s East Campus between 25 and 27 April 2023 amid spring blossoms and a backdrop of the snow-covered Rocky Mountain Continental Divide. Over the 2.5-day workshop, participants shared advancements and challenges in sea and lake ice modeling from NOAA’s Office of Oceanic and Atmospheric Research (OAR) laboratories, other U.S. agencies, NOAA’s cooperative institutes, university partners from Alaska to Maryland and many states in between, and our international colleagues from Canada and Germany. To foster new opportunities for advancing sea ice models through collaboration, presentations, exchanges, and prioritization discussions were focused around our three overriding workshop themes: advancements in coupled (sea ice–wave–ocean–atmosphere–land) modeling development, novel ways of evaluating models, and model applications and transition opportunities.
The workshop setting was an opportunity to bring together experts spanning the end-to-end enterprise of improving forecasts at high latitudes. Our discussions covered the use of observations for models [e.g., initialization, data assimilation (DA), model validation, and process evaluation], coupled sea ice–wave–ocean–atmosphere–land modeling approaches, improvements and challenges across spatiotemporal scales (weather, subseasonal to seasonal, climate, regional, global), and novel products and applications needed for stakeholders [e.g., oil spills, landfast ice, lake ice, shipping lanes, biogeochemical (BGC) modeling, ecosystem, and fisheries needs]. Through a progression of targeted presentations, round robin breakout groups, jamboard sessions, and happy hours, process observationalists, remote sensing and DA specialists, model developers, and stakeholders/users connected to build relationships and outline prioritized actions that can best advance our sea ice modeling efforts collectively.
The achievements of this workshop can be summarized as follows:
sharing knowledge across the vast span of NOAA and NOAA-partner sea and lake ice modeling activities as a starting point for future collaborations;
prioritizing goals and approaches for intra-OAR and cross-NOAA sea ice modeling projects;
recommending targeted model development projects in collaboration with NOAA’s university and international partners; and
identifying transition opportunities and priorities for advancing NOAA’s sea and lake ice forecasting efforts with a focus on stakeholders needs.
We thank the following sponsors for support: NOAA OAR Climate Variability Program, the NOAA Arctic Research Program (FundRef https://doi.org/10.13039/100018302), the Cooperative Institute for Research in Environmental Sciences, the University of Colorado Boulder, and the NOAA Physical Sciences Laboratory.