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Data Publisher for Earth & Environmental Science

Jutila, Arttu; King, Joshua; Ricker, Robert; Hendricks, Stefan; Helm, Veit; Binder, Tobias; Haas, Christian (2021): Airborne low-altitude snow depth on sea ice during aircraft flight P6_217_ICEBIRD_2019_1904081301, Version 1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932787, In: Jutila, A et al. (2021): Airborne snow depth on sea ice during the IceBird Winter 2019 campaign in the Arctic Ocean, Version 1 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.932790

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Abstract:
Airborne observations of snow depth on sea ice were made in April 2019 during the winter campaign of the AWI IceBird campaign series. The data consist of five surveys, some with overlapping segments at low and high altitude, spanning sea-ice covered areas in the Lincoln Sea, Central Arctic Ocean, as well as the Beaufort Sea. For each 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 4-5 meters for low-altitude flights and 7-9 meters for high-altitude flights. The trajectory data contain the full and unfiltered data record with quality flags. Longer sections of altitude-flagged data in the low-altitude data arise from calibrations of an EM sensor. Each snow depth value represents the average depth within the radar footprint that has a theoretical smooth surface cross-/along-track diameter of 2.6/1.0 m at low altitude and 7.2/5.1 m at the high altitude.
Keyword(s):
Arctic Ocean; Cryosphere; Sea ice; snow depth
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
Coverage:
Median Latitude: 71.229454 * Median Longitude: -126.702871 * South-bound Latitude: 70.586757 * West-bound Longitude: -127.773433 * North-bound Latitude: 71.772216 * East-bound Longitude: -124.328323
Date/Time Start: 2019-04-08T17:07:45 * Date/Time End: 2019-04-08T18:26:10
Event(s):
P6_217_ICEBIRD_2019_1904081301 * Latitude Start: 68.305779 * Longitude Start: -133.493674 * Latitude End: 68.305775 * Longitude End: -133.493625 * Date/Time Start: 2019-04-08T15:19:23 * Date/Time End: 2019-04-08T19:53:22 * Location: Arctic * Campaign: P6-217_ICEBIRD_2019 (PAMARCMIP 2019) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Reference/sourceReferenceJutila, Arttusource file
2CommentCommentJutila, ArttuName of the interface picker algorithm used
3DATE/TIMEDate/TimeJutila, ArttuGeocode
4LATITUDELatitudeJutila, ArttuInternal Navigation SystemGeocode
5LONGITUDELongitudeJutila, ArttuInternal Navigation SystemGeocode
6Flight altitudeFlight altitudemJutila, Arttu
7Roll angleRolldegJutila, ArttuInternal Navigation System
8Pitch anglePitchdegJutila, ArttuInternal Navigation System
9Fast time range per binFast time rangemJutila, ArttuAirborne ultrawideband radardelta fast time range (m per bin)
10Bin numberBinJutila, ArttuAirborne ultrawideband radarair_snow
11Bin numberBinJutila, ArttuAirborne ultrawideband radarsnow_ice
12Refractive indexRef indJutila, ArttuCalculatedof snow, contains information on snow density, n=(1+0.51*snow_density)**(3/2), constant value
13Snow thicknessSnow thickmJutila, ArttuCalculated
14Snow thickness, uncertaintySnow thick uncmJutila, ArttuCalculated0.044 m (Jutila et al., 2021), constant value
15Surface topography, relativeh topo relmJutila, ArttuAirborne Laserscanner (ALS) RIEGL VQ580surface topography estimate, difference of the 95th and 5th percentiles of the surface elevation within the radar footprint
16Surface temperatureSurf temp°CJutila, ArttuInfrared radiation pyrometer, Heitronics, KT19.85IIfrom the KT19 within the radar footprint; no housing temperature available for accuracy
17FlagFlagJutila, Artturoll; 0; unless abs(roll) > 5°, then 1
18FlagFlagJutila, Arttupitch; 0; unless abs(pitch) > 5°, then 1
19FlagFlagJutila, Arttuflight altitude; 0; unless altitude > 100 m, then 1 (only for low alt flights, EM-Bird calibration)
20FlagFlagJutila, Arttusurface topo; 0; unless h_topo > 0.5 m, then 1
21FlagFlagJutila, Arttusurface temp;0; unless surf_temp > -5°C, then 1
Change history:
2021-09-14T14:11:21 – In the abstract, "7.2/13.0 m at the high altitude" was changed to "7.2/5.1 m at the high altitude"
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
978749 data points

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