Sea Ice

Updates on seasonally relevant ice extent and ice thickness, as well as historical analyses

Sea ice plays a profound role in the climate, environment, and economies of Alaska. Nothing in the Alaska environment is changing faster than sea ice.

Sea ice moderates regional temperatures and moisture, determines the structure of the marine food web, and shapes what people can or can’t do: from subsistence hunting and travel to resource extraction and national security.


Sea ice over the past week (animation)


See more sea ice graphics