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Zuhr, Alexandra; Wahl, Sonja; Steen-Larsen, Hans Christian; Meyer, Hannah; Faber, Anne-Katrine; Laepple, Thomas (2023): Digital Elevation Models from the summer season 2019 at the EastGRIP deep drilling site [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954944

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Abstract:
Two-dimensional maps of the snow surface, i.e., digital elevation models (DEMs), were generated from daily sets of photos during the summer season of 2019 at the EastGRIP deep drilling site in the accumulation zone of the Greenland Ice Sheet. From mid-May to the beginning of August 2019, about 170 photos were taken every day along a 40 m long transect using a Sony α 7R camera and a fixed lens of 35 mm focal length. The camera was mounted at a height of ~2 m. The entire covered area is 400 m^2 (= 40 x 10 m). Following a Structure-from-Motion photogrammetry approach described in Zuhr et al. (2021) and using the software Agisoft Metashape, DEMs were generated for each day with suitable weather conditions. The DEMs have a resolution of 1 x 1 cm. Missing areas in the DEMs are either caused by a snow sampling scheme carried out in the same area or by insufficient coverage in the point cloud. The largest gap between consecutive DEMs is three days and happened once. Gaps of two days occurred five times and a one-day gap seven times.
Keyword(s):
digital elevation model (DEM); EastGRIP; Photogrammetry; snow surface; Structure-from-Motion
Related to:
Zuhr, Alexandra; Wahl, Sonja; Steen-Larsen, Hans Christian; Meyer, Hannah; Faber, Anne-Katrine; Laepple, Thomas (2023): Snow height information derived from Digital Elevation Models from the summer season 2019 at the EastGRIP deep drilling site. PANGAEA, https://doi.org/10.1594/PANGAEA.954945
Zuhr, Alexandra; Wahl, Sonja; Steen-Larsen, Hans Christian; Meyer, Hanno; Weiner, Mikaela; Laepple, Thomas (2022): Stable water isotopes from repeated snow profile sampling during the summer season 2019 at the EastGRIP deep drilling site. PANGAEA, https://doi.org/10.1594/PANGAEA.951583
Project(s):
Signals from the Surface Snow: Post-Depositional Processes Controlling the Ice Core Isotopic Fingerprint (SNOWISO)
Space-time structure of climate change @ AWI (AWI_SPACE)
Funding:
European Research Council (ERC), grant/award no. 759526: Signals from the Surface Snow: Post-Depositional Processes Controlling the Ice Core Isotopic Fingerprint
Horizon 2020 (H2020), grant/award no. 716092: Space-time structure of climate change (SPACE)
Coverage:
Latitude: 75.630000 * Longitude: -35.980000
Date/Time Start: 2019-05-26T00:00:00 * Date/Time End: 2019-07-27T00:00:00
Event(s):
EGRIP_2019 * Latitude: 75.630000 * Longitude: -35.980000 * Location: Greenland * Campaign: GL-Land_2019_EGRIP * Basis: AWI Arctic Land Expedition * Method/Device: Ice drill (ICEDRILL)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeZuhr, AlexandraGeocode
2 Raster graphic, GeoTIFF formatGeoTIFFZuhr, Alexandra
3 Raster graphic, GeoTIFF format (File Size)GeoTIFF (Size)BytesZuhr, Alexandra
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
41 data points

Data

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1 
Date/Time		2 
GeoTIFF		3 
GeoTIFF (Size) [Bytes]
2019-05-2620190526_DEM.tif37.2 MBytes
2019-05-2920190529_DEM.tif30.7 MBytes
2019-05-3020190530_DEM.tif39.4 MBytes
2019-05-3120190531_DEM.tif41.7 MBytes
2019-06-0120190601_DEM.tif39.7 MBytes
2019-06-0220190602_DEM.tif35.7 MBytes
2019-06-0420190604_DEM.tif45.8 MBytes
2019-06-0720190607_DEM.tif45.2 MBytes
2019-06-0820190608_DEM.tif43.8 MBytes
2019-06-0920190609_DEM.tif44 MBytes
2019-06-1020190610_DEM.tif39.3 MBytes
2019-06-1220190612_DEM.tif44.9 MBytes
2019-06-1320190613_DEM.tif44.5 MBytes
2019-06-1420190614_DEM.tif16.7 MBytes
2019-06-1520190615_DEM.tif31.9 MBytes
2019-06-1820190618_DEM.tif20.7 MBytes
2019-06-1920190619_DEM.tif26.8 MBytes
2019-06-2020190620_DEM.tif41.6 MBytes
2019-06-2220190622_DEM.tif45.5 MBytes
2019-06-2420190624_DEM.tif46.3 MBytes
2019-06-2620190626_DEM.tif43.2 MBytes
2019-06-2820190628_DEM.tif43.1 MBytes
2019-06-2920190629_DEM.tif31 MBytes
2019-07-0220190702_DEM.tif43 MBytes
2019-07-0520190705_DEM.tif43.5 MBytes
2019-07-0620190706_DEM.tif35.1 MBytes
2019-07-0720190707_DEM.tif41.7 MBytes
2019-07-0820190708_DEM.tif43.3 MBytes
2019-07-1220190712_DEM.tif42.6 MBytes
2019-07-1320190713_DEM.tif36.8 MBytes
2019-07-1520190715_DEM.tif44.3 MBytes
2019-07-1620190716_DEM.tif44.1 MBytes
2019-07-1720190717_DEM.tif42.7 MBytes
2019-07-1920190719_DEM.tif36.9 MBytes
2019-07-2020190720_DEM.tif32.5 MBytes
2019-07-2120190721_DEM.tif28.8 MBytes
2019-07-2320190723_DEM.tif32.5 MBytes
2019-07-2420190724_DEM.tif42.4 MBytes
2019-07-2520190725_DEM.tif34 MBytes
2019-07-2620190726_DEM.tif41.1 MBytes
2019-07-2720190727_DEM.tif28.7 MBytes