NSIDC maintains a website to provides access to SIPN-related data sets: http://nsidc.org/data/sipn/
- CryoSat-2 Sea Ice Freeboard, Thickness, and Snow Depth Data Set
- IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Data Set
Snapshot of the Arctic: NSIDC also hosts a page for sea ice images that are updated daily: http://nsidc.org/data/sipn/snapshot-of-the-arctic.html