Developing a Process-Level Understanding
Arctic sea-ice is changing dramatically, with rapid declines in summer
sea-ice extent and a shift toward relatively more first year ice and
less multi-year ice. Ultimately sea-ice decline is linked to
broader global climate change, but at a regional scale many
interdependent processes and feedbacks within the atmosphere, ocean, and
sea-ice contribute to the broader observed changes. The primary
objective of MOSAiC is to develop a better understanding of these
important coupled-system processes so they can be more accurately
represented in regional- and global-scale models. Such
enhancements will contribute to improved modeling of global climate and
weather, and Arctic sea-ice predictive capabilities.
Guiding Science Questions
What are the causes and consequences of an evolving and diminished Arctic sea ice cover?
- What are the seasonally-varying energy sources, mixing processes, and
interfacial fluxes that affect the heat and momentum budgets of sea ice?
- How does sea ice move and deform over its first year of existence?
- Which processes contribute to the formation, properties, precipitation, and
maintenance of Arctic clouds and their interactions with aerosols and
- How do interfacial exchange rates, biology, and chemistry couple to
regulate ecosystems and the major elemental cycles in the high Arctic
- How do ongoing changes in the Arctic ice-ocean-atmosphere system impact
larger-scale heat and mass transfers of importance to climate and