Super-high-resolution aerial imagery, digital surface model and 3D point cloud of Cape Blossom, Alaska (20 cm)

• Main Authors: Rettelbach, Tabea, Nitze, Ingmar, Grünberg, Inge, Hammar, Jennika, Schäffler, Simon, Hein, Daniel, Gessner, Matthias, Bucher, Tilman, Brauchle, Jörg, Hartmann, Jörg, Sachs, Torsten, Boike, Julia, Grosse, Guido
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: AC; Airborne Data; Aircraft; Alaska; Arctic; Arctic Landscape Dynamics; Baldwin Peninsula; Binary Object; Coastal erosion; Digital Surface Model; File content; MACS; Orthoimagery; P6_224_Perma_X_2021; P6_224_Perma_X_2021_2106250301; Permafrost; Perma-X 2021 Western Alaska; Point cloud; LAS file; point clouds; POLAR 6; Project; Raster graphic; GeoTIFF format; Structure-from-Motion; Alfred Wegener Institute; permafrost; Thermokarst
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.962594

As part of the Perma-X airborne campaign led by the Alfred Wegener Institute in 2021, we collected super-high-resolution multispectral imagery of permafrost landscapes with the Modular Aerial Camera System (MACS), developed by the German Aerospace Center. From these images, we photogrammetrically processed four-band orthophotos (blue, green, red, near-infrared) and digital surface models at a spatial resolution of 20 cm, as well as photogrammetric point clouds in RGB and NIR at 3.66 pts/m² and 1.34 pts/m², respectively. This dataset covers approximately 25.22 km² of Cape Blossom in Alaska, with all images collected on 25 June 2021. This super-high-resolution dataset provides opportunities for generating detailed training datasets of permafrost landform inventories, a baseline for change detection for thermokarst and thermo-erosion processes, and upscaling of field measurements to lower-resolution satellite observations.