Stable water isotopes of snow during MOSAiC expedition

Snow samples were collected from several locations on the main MOSAiC ice floe on weekly basis. Snow samples for measurement of stable water isotopes (δ18O, δD,) were collected in three different layers (top, middle, bottom) using a metal density cutter. At first, samples were stored in sealed plast...

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Bibliographic Details
Main Authors: Mellat, Moein, Meyer, Hanno, Brunello, Camilla F, Arndt, Stefanie, Macfarlane, Amy R, Schneebeli, Martin, Hörhold, Maria, Werner, Martin, Weiner, Mikaela, Marent, Andreas
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Arctic Ocean
Calculated after Dansgaard (1964)
Comment
DATE/TIME
DEPTH
water
Deuterium excess
Event label
Height
relative
from ice/snow line
maximum
minimum
IC
Ice corer
isotopes
Layer description
Mass spectrometer Finnigan MAT Delta-S (ISOLAB)
Mosaic
MOSAiC20192020
Multidisciplinary drifting Observatory for the Study of Arctic Climate
Polarstern
PS122/1
PS122/1_10-35
PS122/1_10-38
PS122/1_10-5
PS122/1_11-23
PS122/1_4-10
PS122/1_5-5
PS122/1_5-92
PS122/1_5-93
PS122/1_5-95
PS122/1_6-10
PS122/1_6-136
PS122/1_6-140
PS122/1_6-34
PS122/1_6-6
PS122/1_6-61
PS122/1_7-105
PS122/1_7-106
PS122/1_7-12
PS122/1_7-89
PS122/1_8-110
PS122/1_8-24
PS122/1_8-33
PS122/1_8-79
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.948511
https://doi.org/10.1594/PANGAEA.948511
Description
Summary:Snow samples were collected from several locations on the main MOSAiC ice floe on weekly basis. Snow samples for measurement of stable water isotopes (δ18O, δD,) were collected in three different layers (top, middle, bottom) using a metal density cutter. At first, samples were stored in sealed plastic bags and the air was squeezed out before closing the bags. At later stages of the expedition, samples were stored in plastic cups with lids. Later the samples were thawed completely at room temperature and poured into 20 ml glass vials and sealed with parafilm tape and stored at 4°C. Oxygen and hydrogen isotope analyses were carried out at the ISOLAB Facility at AWI Potsdam (https://hdl.handle.net/10013/sensor.ddc92f54-4c63-492d-81c7-696260694001) with mass spectrometers (DELTA-S Finnigan MAT, USA): https://hdl.handle.net/10013/sensor.af148dea-fe65-4c87-9744-50dc4c81f7c9 https://hdl.handle.net/10013/sensor.62e86761-9fae-4f12-9c10-9b245028ea4c. employing the equilibration method (details in Meyer et al., 2000). δ18O and δD values were given in per mil (‰) vs. Vienna standard mean ocean water (V-SMOW) as the standard. The second order parameter d excess was computed according to: d excess = δD-8 δ18O (Dansgaard, 1964).

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