 The Mosaic Expedition provided the unique opportunity to observe sea ice properties over a full annual cycle. This was achieved through the collection of high-resolution orthomosaics and photogrammetry data from a helicopter-mounted optical camera system. These datasets were combined with contemporaneous airborne laser scanning reflectance measurements to correct for cloud shadow effects, making them suitable for use in sea ice and melt pond classification algorithms. This article was authored by Nicholas Neckle, Nils Ferks, Jared Bonborn, and others.