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Wever, Nander; White, Seth; Hunkeler, Priska A; Maksym, Ted; Leonard, Katherine C (2021): MagnaProbe snow thickness during a floe-scale walk on station PS81/517_GPS1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933567, In: Wever, N et al. (2021): Snow and ice thickness measurements from Terrestrial Laser Scanning, Magnaprobe and GEM-2 on ice stations PS81/503, PS81/506 and PS81/517 from Weddell Sea, Antarctica, 2013 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.933584

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Abstract:
Snow depth measured during a floe-scale walk (FSW) from Magnaprobe (MP), see Sturm and Holmgren (2018) for details. Floe-scale walks were performed to capture variability on a larger scale than the laser scan field.
Keyword(s):
ice thickness; Sea ice; snow depth; spatial variability
Related to:
Wever, Nander; Leonard, Katherine C; Maksym, Ted; White, Seth; Proksch, Martin; Lenaerts, Jan T M (2021): Spatially distributed simulations of the effect of snow on mass balance and flooding of Antarctic sea ice. Journal of Glaciology, 67(266), 1055-1073, https://doi.org/10.1017/jog.2021.54
Further details:
Sturm, Matthew; Holmgren, J (2018): An Automatic Snow Depth Probe for Field Validation Campaigns. Water Resources Research, 54(11), 9695-9701, https://doi.org/10.1029/2018WR023559
Coverage:
Latitude: -63.394340 * Longitude: -51.130410
Date/Time Start: 2013-07-31T19:42:00 * Date/Time End: 2013-07-31T19:42:00
Event(s):
PS81/517_GPS1 * Latitude: -63.394340 * Longitude: -51.130410 * Date/Time: 2013-07-31T19:42:00 * Campaign: ANT-XXIX/6 (PS81 AWECS) * Basis: Polarstern * Method/Device: Global positioning system (GPS) * Comment: Starting point of measurement; UTM Zone 22S, northing=2970466, easting=493483
Comment:
Coordinates:
============
X and Y coordinates are relative to a GPS base station installed on each floe. Coordinates were determined using post-processing kinematic GPS (PPK-GPS), and corrected for floe ration and drift. Coordinates of measurements inside the laser scanning area were particularly carefully processed to collocate measurements as accurately as possible (within a few cm). The vertical height above sea level in the TLS data was determined by using reflectors on poles. Upon installation of these reflector poles, the ice was drilled through and the height of the reflector above sea level was determined. For details, see Wever et al. (2021).
On the floe scale walk, magnaprobe coordinates have been equally processed as in the laser scanning area. However, for the GEM-2 instrument, the position of the magnaprobe was taken for the corresponding time stamp in the GEM-2 data. Since the GEM-2 instrument was following the Magnaprobe surveyor with a few m distance, this leads to less precise positioning. However, the GEM-2 instrument also has a footprint of similar order of magnitude (see Hunkeler et al., 2015).
Coordinate reference points:
============================
All coordinates are relative to GPS base station 1, in a local coordinate system where X and Y coordinates align with easting and northing, respectively, from the respective UTM Zone at a specific point in time. The respective coordinates of GPS base station 1 for this dataset are:
For PS81/517: Location of GPS base station 1, July 31 2013, 1942 UTC:
WGS84 : latitude=-63.39434 longitude=-51.13041
UTM Zone 22S : northing=2970466 easting=493483
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Cartesian coordinate, xxmWever, Nanderrelative to GPS1 starting position
2 Cartesian coordinate, yymWever, Nanderrelative to GPS1 starting position
3 Snow thicknessSnow thickmWever, NanderMagnaProbe, Snow-Hydro
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 1 (ProcLevel1)
Size:
1395 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
x [m]		2 
y [m]		3 
Snow thick [m]
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