International MOSAiC Science Conference/Workshop

International MOSAiC Science Conference/Workshop
18th -22nd October 2021, Potsdam (Germany)

The MOSAiC expedition was a big success and scientists collected terabytes of data and thousands of samples during the year of expedition. Now, one year after the expedition ended, MOSAiC is organizing a big meeting to present and discuss the scientific results. The “International MOSAiC Science Conference/Workshop” will be held from 18th to 22nd October 2021 in Potsdam (Germany). We hope to host an in-person meeting and selected the ‘Kongresshotel Potsdam’ as venue. A contingent for accommodation is arranged to allow a high number of participants to stay on site. A link for booking a room in the conference hotel will be distributed soon.

The “International MOSAiC Science Conference/Workshop” addresses the whole MOSAiC community and offers the chance to present preliminary experimental and modelling results and to enhance the interaction and interlinkages between the different disciplines of the coupled Arctic climate system. Supporting this, the meeting offers platforms to develop future analyses and publication strategies, support and foster connections to other groups and disciplines and to identify and develop joint projects. The meeting will advertise the unique data sets and attract the big modelling centres. In such a way the “International MOSAiC Science Conference/Workshop” will function as big step towards the improvement of the sea ice and weather forecast and regional and global climate models.

Meeting Concept

We envision a meeting concept that combines aspects of a conference and a workshop with sessions for oral and poster presentations and a great number of breakout sessions for detailed discussions (see the schematic agenda below). Therefore, the meeting offers plenary sessions in the beginning to inform generally about the scientific status of MOSAiC and there will be breakout sessions for the individual MOSAiC Teams.
In addition, we will have parallel sessions (green slots) following the character of a conference with oral and poster presentations (or maybe another type of presentation) on Tuesday and Wednesday. For those sessions, abstracts can be submitted. Please check the list of sessions below.
Furthermore, towards the end of the week, it is planned to have breakout sessions (brown slots) that allow detailed discussions. Some topics will be defined during the next months, but there will be capacity to spontaneously develop breakout sessions to respond to topics that will come up during the meeting.
To allow a lively and agile meeting, we have flexible time slots (grey slots) in the agenda to enable small meetings and discussion rounds. There will be the opportunity to book meeting rooms or to use the nice lounges and seating areas offered by the conference center. Of course, you are not forced to stay in the conference center for your meeting, feel free to come together in the nice city center of Potsdam and visit its nice restaurants and bars.


Download Agenda

To participate in the “International MOSAiC Science Conference/Workshop” please register here until September 1st 2021. A registration fee will accrue that need to be paid at the hotel registration desk during the meeting.

Scientific Sessions and Abstract Submission
Based on the scientific work that is ongoing in the MOSAiC community, 16 tentative sessions are proposed that mainly cover cross-cutting disciplines and therefore address the main goal of MOSAiC to investigate the couple Arctic Climate system. Those sessions will be open for abstract submission. They are planned as parallel sessions during Tuesday, October 19th and Wednesday, October 20th.

Session 1: Freshwater Lens
Session 2: Atmosphere-ice-ocean coupling
Session 3: Storms, their processes and impacts
Session 4: Ridge processes
Session 5: Freeze-up and winter processes
Session 6: Solar partitioning
Session 7: Snow and ice mass balance
Session 8: Sea Ice property evolution
Session 9: Sea ice dynamics
Session 10: Remote Sensing
Session 11: Carbon cycling
Session 12: Issues of Spatial Scale
Session 13: Atmospheric Structure, Composition, Aerosols, and Clouds
Session 14: Drivers of food web dynamics across the ice-ocean interface
Session 15: Advancing Arctic System Predictability
Session 16: First insights into biological processes and diversity during MOSAiC drift

Abstracts to the proposed sessions can be submitted here until July 13th 2021. Please be aware that your abstract should not be longer than 200 words and should be uploaded as .pdf file. As type of presentation you can choose between “oral”, “poster” or “no preference”. Please be aware that we cannot guarantee your preferred type of presentation. The author notifications will follow mid-August.

Travel Support for Early Career Scientists
Thanks to the International Arctic Science Committee (IASC) we have funding available to support Early Career Scientists (ECS) with their travel costs. For further information, please see the call for applications.

In case you have any questions, please do not hesitate to contact the local organizing committee via

List of Sessions

Session 1: Freshwater Lens
Examines summertime melt water and the accumulation of freshwater leading to upper ocean stratification with implication for many different processes, including dynamics within leads, vertical mixing, implication of stratification on gas transfer, impacts on biological communities, upper ocean heat transfer, and many others.

Session 2: Atmosphere-ice-ocean coupling
Focuses on coupled system processes that link the atmosphere, sea ice, and ocean, with focus on thermodynamic, dynamic, radiative, gas transfer, and other related processes that affect the momentum, energy and mass exchange between the climate components. Both observational and modeling perspectives are appropriate, including studies focused on specific components of these coupled processes.

Session 3: Storms, their processes and impacts:
Examines cross-cutting aspects of storms from their physical structure, to their impacts on the surface, and more. Specific focus is on cyclones, warm air intrusions, cold air outbreaks, other synoptic or large-scale organized systems, the interactions between storms and sea ice (dynamic and thermodynamic effects), impacts on the upper ocean (e.g. enhanced mixing or triggering (sub)mesoscale features), hydrological cycle (e.g. precipitation accumulation), surface energy budget, and other related processes. Based on observational analysis or modeling studies.

Session 4: Ridge processes
Includes the physical and ecological processes related to sea-ice ridges, including their interactions with the ocean, sea ice, snow, atmosphere, and more. Include modeling work (e.g. how models can represent ice pressure ridge formation and decay).

Session 5: Freeze-up and winter processes
Focuses on the physical and biogeochemical processes (including tracers) related to the autumn freeze-up and the progression of freezing process through the winter season. Relevant topics could include freeze processes for various surfaces, the impact of leads, the role of key events, mid-winter dynamics, and more.

Session 6: Solar partitioning
Examines all aspects of how sunlight is partitioned by the coupled system, including the spatial and temporal variability of sunlight reflected by different surface types, absorption in the snow and ice, and transmission to the ocean. The impacts of this partitioning on heat budgets and ecosystems can also be considered.

Session 7: Snow and ice mass balance:
Includes all aspects of snow accumulation and sea ice mass balance, such as snow accumulation and redistribution, sea-ice growth, snow and ice melt, snow and ice temperature profiles, spatial variability and evolution, etc. Includes modeling work to represent variation of snow and its properties (e.g., melt ponds, albedo) and how that affects simulations.

Session 8: Sea Ice property evolution:
Examines the process-oriented evolution of sea ice from physical, geochemical, and ecological perspectives, including temporal and spatial variability. This session will include major observations from the CO FYI and SYI time-series sites (the darksite) and BGC sampling sites, among others. Annual and seasonal perspectives are relevant. Includes modeling work.

Session 9: Sea ice dynamics:
A general focused on sea ice drift and deformation from local to regional scales, ice rheology and strength, winter dynamics preconditioning summer conditions, and related themes. Includes related modeling (e.g., ice drift forecast by SIDFeX or ice dynamic parameterizations and simulations).

Session 10: Remote Sensing:
All aspects of remote sensing work covering all compartments (sea ice, atmosphere, ocean, etc.) and topics (water vapour, microwave properties including modeling, ice drift and type from SAR, ice thickness, leads and floe size, melt ponds/albedo from optical data, EM-bird, laser scanner, helipod and more). Includes satellite, helicopter/airborne and on-ice/Polarstern based work.

Session 11: Carbon cycling:
Focus on inorganic and organic carbon compound cycling within and across the lower atmosphere, snow/ice, and upper ocean, including interfacial transfer among these. Fluxes associated with specific events are of particular interest.

Session 12: Issues of Spatial Scale:
This cross-cutting session seeks to answer the question: What can we learn from combining local and distributed observations? For example, the DN vs. CO or local vs. distributed ice and snow measurements. Of related interest are issues related to the context and scaling of observations (i.e., albedo from point to model grid box), characterizing and representing heterogeneity (e.g. (sub)mesoscale eddies), and how these observations are utilized in models.

Session 13: Atmospheric Structure, Composition, Aerosols, and Clouds:
This session will serve as a broad venue for many topics in atmospheric science, including observational and modeling studies of aerosol and cloud processes, aerosol sources, transport, composition, precipitation processes, atmospheric moisture, interaction with the atmospheric boundary layer, and related atmospheric dynamics.

Session 14: Drivers of food web dynamics across the ice-ocean interface:
Focuses on the influence of ice-ocean boundary layer conditions and hydrography on structuring communities, organismal interactions and distributions.

Session 15: Advancing Arctic System Predictability:
This session covers a broad range of large-scale atmosphere, ice-ocean, and coupled modeling contributions, including reporting on systematic model errors, results from data assimilation and data denial experiments, Arctic-lower latitude linkages, and their role for short-term to seasonal prediction of atmosphere and sea ice components.

Session 16: First insights into biological processes and diversity during MOSAiC drift:
This session would allow presentations of all eco-groups highlighting their ongoing work and showcasing first results from ice and water column studies