Neckel, Niklas; Helm, Veit; Franke, Steven; Hames, Oceane; Haas, Christian (2025): Near-infrared radiation from AWI MACS images over Atka Bay landfast sea ice (East Antarctica) during the ANTSI campaign acquired on December 5, 2022 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982716
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Published: 2025-10-27 • DOI registered: 2025-11-17
Abstract:
This dataset contains a near-infrared radiation (NIR) orthomosaic from Modular Aerial Camera System (MACS) images acquired over Atka Bays landfast sea ice during the Antarctic season of 2022/23 (date of aquisition: December 5th, 2022). The data set covers significant parts of Atka Bay focusing on areas where icebergs were embedded in the landfast sea ice. The scientific focus was to investigate the influence of icebergs on wind-driven snow distribution and slush formation on Antarctic landfast sea ice. The data are available as Geotiff files and have the following coordinate system: EPSG:3031 - WGS 84 / Antarctic Polar Stereographic.
Keyword(s):
References:
Neckel, Niklas; Fuchs, Niels; Birnbaum, Gerit; Hutter, Nils; Jutila, Arttu; Buth, Lena; von Albedyll, Luisa; Ricker, Robert; Haas, Christian (2023): Helicopter-borne RGB orthomosaics and photogrammetric digital elevation models from the MOSAiC Expedition. Scientific Data, 10(1), 426, https://doi.org/10.1038/s41597-023-02318-5
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 (2024): Very high resolution aerial image orthomosaics, point clouds, and elevation datasets of select permafrost landscapes in Alaska and northwestern Canada. Earth System Science Data, 16(12), 5767-5798, https://doi.org/10.5194/essd-16-5767-2024
Rohlfing, Torsten (2012): Single-Image Vignetting Correction by Constrained Minimization of log-Intensity Entropy. figshare, https://doi.org/10.6084/M9.FIGSHARE.96145.V2
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PA_02135: ANTSI - Antarctic Sea Ice: Thickness, Melt Ponding, and Ice Shelf Interaction
Coverage:
Median Latitude: -70.659097 * Median Longitude: -8.287374 * South-bound Latitude: -70.659202 * West-bound Longitude: -8.287413 * North-bound Latitude: -70.658992 * East-bound Longitude: -8.287334
Date/Time Start: 2022-12-05T09:07:24 * Date/Time End: 2022-12-05T15:44:23
Event(s):
P5_238_ANTSI_2022_2212051101 * Latitude Start: -70.658992 * Longitude Start: -8.287334 * Latitude End: -70.659202 * Longitude End: -8.287413 * Date/Time Start: 2022-12-05T09:07:24 * Date/Time End: 2022-12-05T15:44:23 * Campaign: P5-238_ANTSI_2022 (ANTSI, MEP, Kottas-Aero) * Basis: POLAR 5 * Method/Device: Aircraft (AC)
Comment:
We generated an orthomosaic from 11473 single images capturing near-infrared (NIR) radiation with the Modular Airborne Camera System (MACS). We used a NIR camera which captures light within the 715 – 950 nm wavelength range (Rettelbach et al., 2024; doi:10.5194/essd-16-5767-2024). Data were acquired at a shutter speed of 0.1 ms to avoid image over saturation due to bright snow surfaces. All images were corrected for vignetting effects by employing a parametric vignetting model (Rohlfing, 2012; doi:10.6084/m9.figshare.96145.v2) and converted from MACS raw data format into lossless PNG images. The external camera orientation was obtained from the camera inertial measurement unit (IMU) and the GNSS solutions used for the ALS processing. The final orthomosaic was obtained by employing the full structure from motion pipeline of Agisoft Metashape (Neckel et al., 2023; doi:10.1038/s41597-023-02318-5).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Neckel, Niklas | |||
| 2 | Method comment | Method comm | Neckel, Niklas | |||
| 3 | Image area | Image area | Neckel, Niklas | |||
| 4 | Width | Width | pixel | Neckel, Niklas | ||
| 5 | Height | Height | pixel | Neckel, Niklas | ||
| 6 | Data type | Data type | Neckel, Niklas | |||
| 7 | Coordinate reference system | CRS | Neckel, Niklas | |||
| 8 | Unit | Unit | Neckel, Niklas | |||
| 9 | Pixel size | Pixel size | m | Neckel, Niklas | ||
| 10 | Image | IMAGE | Neckel, Niklas | Modular Airborne Camera System (MACS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
10 data points
Data
All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.
| 1 Content | 2 Method comm | 3 Image area | 4 Width [pixel] | 5 Height [pixel] | 6 Data type | 7 CRS | 8 Unit | 9 Pixel size [m] | 10 IMAGE |
|---|---|---|---|---|---|---|---|---|---|
| Orthomosaic from 11473 single images capturing near-infrared (NIR) radiation with the Modular Airborne Camera System (MACS) | Modular Airborne Camera System (MACS) camera, 715 - 950 nm wavelength range (near-infrared; NIR), shutter speed of 0.1 ms, corrected for vignetting effects by employing a parametric vignetting model | -306836.15,2090662.54 : -273452.65,2119102.04 | 66767 | 56879 | Float32 - Thirty two bit floating point | EPSG:3031 - WGS 84 / Antarctic Polar Stereographic | meters | 0.5 | P5-238_ANTSI_2022_2212041001_NIR.tif |