Jutila, Arttu; King, Joshua; Ricker, Robert; Hendricks, Stefan; Helm, Veit; Binder, Tobias (2021): Airborne high-altitude snow depth on sea ice during aircraft flight P6_211_RESURV79_2018_1804100301, Version 1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932702
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Abstract:
Airborne observations of snow depth on sea ice were made in April 2018 as part of the RESURV79 (Re-survey of the 79° Glacier) campaign under the AWI IceBird campaign series. The data consist of one survey spanning sea-ice covered area in the Fram Strait. For the flight, the geolocated snow depth data from an airborne frequency-modulated continuous-wave ultrawideband radar using an algorithm based on signal peakiness are provided with a point spacing of approximately 7-9 meters. The trajectory data contain the full and unfiltered data record with quality flags. Each snow depth value represents the average depth within the radar footprint that has a theoretical smooth surface cross-/along-track diameter of 7.2/13.0 m.
Related to:
Jutila, Arttu; King, Joshua; Paden, John D; Ricker, Robert; Hendricks, Stefan; Polashenski, Chris; Helm, Veit; Binder, Tobias; Haas, Christian (2021): High-Resolution Snow Depth on Arctic Sea Ice From Low-Altitude Airborne Microwave Radar Data. IEEE Transactions on Geoscience and Remote Sensing, 1-16, https://doi.org/10.1109/TGRS.2021.3063756
Project(s):
Sea Ice Physics @ AWI (AWI_SeaIce)
Coverage:
Median Latitude: 82.607520 * Median Longitude: -2.089010 * South-bound Latitude: 82.366599 * West-bound Longitude: -15.126347 * North-bound Latitude: 82.676027 * East-bound Longitude: 10.258847
Date/Time Start: 2018-04-10T08:46:16 * Date/Time End: 2018-04-10T10:12:37
Event(s):
P6_211_RESURV79_2018_1804100301 * Latitude Start: 78.245918 * Longitude Start: 15.501109 * Latitude End: 81.596199 * Longitude End: -16.659362 * Date/Time Start: 2018-04-10T06:52:57 * Date/Time End: 2018-04-10T10:37:54 * Location: North Greenland Sea * Campaign: P6-211_RESURV79_2018 (RESURV79, FINEGIS) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Reference/source | Reference | Jutila, Arttu | source file | ||
| 2 | Comment | Comment | Jutila, Arttu | Name of the interface picker algorithm used | ||
| 3 | DATE/TIME | Date/Time | Jutila, Arttu | Geocode | ||
| 4 | LATITUDE | Latitude | Jutila, Arttu | Internal Navigation System | Geocode | |
| 5 | LONGITUDE | Longitude | Jutila, Arttu | Internal Navigation System | Geocode | |
| 6 | Flight altitude | Flight altitude | m | Jutila, Arttu | ||
| 7 | Roll angle | Roll | deg | Jutila, Arttu | Internal Navigation System | |
| 8 | Pitch angle | Pitch | deg | Jutila, Arttu | Internal Navigation System | |
| 9 | Fast time range per bin | Fast time range | m | Jutila, Arttu | Airborne ultrawideband radar | delta fast time range (m per bin) |
| 10 | Bin number | Bin | Jutila, Arttu | Airborne ultrawideband radar | air_snow | |
| 11 | Bin number | Bin | Jutila, Arttu | Airborne ultrawideband radar | snow_ice | |
| 12 | Refractive index | Ref ind | Jutila, Arttu | Calculated | of snow, contains information on snow density, n=(1+0.51*snow_density)**(3/2), constant value | |
| 13 | Snow thickness | Snow thick | m | Jutila, Arttu | Calculated | |
| 14 | Snow thickness, uncertainty | Snow thick unc | m | Jutila, Arttu | Calculated | 0.044 m (Jutila et al., 2021), constant value |
| 15 | Surface topography, relative | h topo rel | m | Jutila, Arttu | Airborne Laserscanner (ALS) RIEGL VQ580 | surface topography estimate, difference of the 95th and 5th percentiles of the surface elevation within the radar footprint |
| 16 | Surface temperature | Surf temp | °C | Jutila, Arttu | Infrared radiation pyrometer, Heitronics, KT19.85II | from the KT19 within the radar footprint; no housing temperature available for accuracy |
| 17 | Flag | Flag | Jutila, Arttu | roll; 0; unless abs(roll) > 5°, then 1 | ||
| 18 | Flag | Flag | Jutila, Arttu | pitch; 0; unless abs(pitch) > 5°, then 1 | ||
| 19 | Flag | Flag | Jutila, Arttu | flight altitude; 0; unless altitude > 100 m, then 1 (only for low alt flights, EM-Bird calibration) | ||
| 20 | Flag | Flag | Jutila, Arttu | surface topo; 0; unless h_topo > 0.5 m, then 1 | ||
| 21 | Flag | Flag | Jutila, Arttu | surface temp;0; unless surf_temp > -5°C, then 1 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1093772 data points
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