Citation:

PANGAEA.935934

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Abstract:

In the designated snowpits on the MOSAic expedition a 100cm3 sample of snow was measured for density in the field, approximately every 3 vertical centimetres. The same snow volume was melted for salinity measurements and sealed into glass jars onboard Polarstern. As a result, δ18O and δ2H isotope composition was measured at the same intervals as density and salinity profiles, included in the snowpit dataset bundle. These samples were then transported to the WSL laboratory in Switzerland to analyse the stable water isotopes (δ18O and δ2H). This dataset provides details on the date and coordinates of the snowpit event, the height of the sample in the snow profile, and the corresponding isotope composition. This dataset includes the isotopic composition of the samples obtained in the winter months (October 2019 to May 2020). After analysis of the samples, and comparing the values to a parallel dataset (doi:10.1594/PANGAEA.948511), it was identified that our samples needed to be corrected due to evaporative fractionation during sample storage. The corrected values are included in this published dataset and we recommend that future studies using this dataset use these corrected values only. The correction was done by calculating the mean of this dataset to the mean of the parallel dataset and correcting for the difference. As a result, the δ18O was corrected by -6.4‰, the δ2H was corrected by -36.4‰. The new values are located in the columns 'δ18O H2O [‰ SMOW] (Corrected)' and 'δD H2O [‰ SMOW] (Corrected)'. We would like to emphasise that calculations of d-excess values for this dataset need interpreting carefully.

Related to:

Mellat, Moein; Meyer, Hanno; Brunello, Camilla F; Arndt, Stefanie; Macfarlane, Amy R; Schneebeli, Martin; Hörhold, Maria; Werner, Martin; Weiner, Mikaela; Marent, Andreas (2022): Stable water isotopes of snow during MOSAiC expedition. PANGAEA, https://doi.org/10.1594/PANGAEA.948511

Project(s):

Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic (ARICE)

Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)

Funding:

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC

Horizon 2020 (H2020), grant/award no. 730965 : Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic (ARICE)

Swiss Federal Institute for Forest, Snow and Landscape Research (WSL/FNP), grant/award no. WSL_201812N1678

Swiss National Science Foundation (SNF), grant/award no. 179130 : From Cloud to Ground: Snow Accumulation in Extreme Environments

Swiss Polar Institute (SPI), grant/award no. DIRCR-2018-003

Coverage:

Median Latitude: 86.526101 * Median Longitude: 59.620939 * South-bound Latitude: 83.658609 * West-bound Longitude: 12.867117 * North-bound Latitude: 88.560159 * East-bound Longitude: 115.741537

Date/Time Start: 2020-01-03T00:00:00 * Date/Time End: 2020-05-10T00:00:00

Event(s):

PS122/2_18-66 * Latitude: 86.893710 * Longitude: 115.720250 * Date/Time: 2020-01-03T06:29:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: (MOSAiC20192020) * Basis: * Method/Device: Snow pit (SNOWPIT) * Comment: $snow1-A5$ persons: MS, MJ, DK

PS122/2_19-9 * Latitude: 87.071680 * Longitude: 115.315120 * Date/Time: 2020-01-06T06:25:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: (MOSAiC20192020) * Basis: * Method/Device: Snow pit (SNOWPIT)

PS122/2_19-28 * Latitude: 87.112630 * Longitude: 114.996920 * Date/Time: 2020-01-06T11:05:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: (MOSAiC20192020) * Basis: * Method/Device: Snow pit (SNOWPIT) * Comment: not the same pit as A7 but also first year ice at the coring site

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Macfarlane, Amy R
2	File name	File name		Macfarlane, Amy R
3	Sample code/label	Sample label		Macfarlane, Amy R
4	Sample number	Sample no		Macfarlane, Amy R
5	DATE/TIME	Date/Time		Macfarlane, Amy R		Geocode
6	Location	Location		Macfarlane, Amy R
7	LATITUDE	Latitude		Macfarlane, Amy R		Geocode
8	LONGITUDE	Longitude		Macfarlane, Amy R		Geocode
9	Height, relative, from ice/snow line, maximum	H rel ice/snow max	m	Macfarlane, Amy R		sampe top
10	Height, relative, from ice/snow line, minimum	H rel ice/snow min	m	Macfarlane, Amy R		sampe bottom
11	δ Deuterium, water	δD H2O	‰ SMOW	Macfarlane, Amy R	Uncorrected
12	δ18O, water	δ18O H2O	‰ SMOW	Macfarlane, Amy R	Uncorrected
13	δ Deuterium, water	δD H2O	‰ SMOW	Macfarlane, Amy R	Corrected
14	δ18O, water	δ18O H2O	‰ SMOW	Macfarlane, Amy R	Corrected

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:

3510 data points

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