Melt ponds and leads water sampling for biogeochemical parameters during expedition PS122/5 (MOSAiC Leg 5) to the central Arctic in August-September 2020 ...

Melt ponds water sampling for biogeochemical parameters such as dissolved inorganic carbon (DIC), total alkalinity (TA), oxygen isotopes were examined from August to September 2020. To obtain discrete water samples from the melt ponds and leads, we checked the vertical structure and depth of the mel...

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Bibliographic Details
Main Authors: Nomura, Daiki, Li, Yuhong, Droste, Elise Sayana, Webb, Alison L, Chamberlain, Emelia, Yoshimura, Masaki, Meyer, Hanno, Delille, Bruno
Format: Dataset
Language:unknown
Published: PANGAEA 2024
Subjects:
Arctic Ocean
Carbonate chemistry
lead
melt pond
melt water
Mosaic
oxygen isotope
Event label
DATE/TIME
LATITUDE
LONGITUDE
Site
Sample type
DEPTH, water
Temperature, water
Salinity
Carbon, inorganic, dissolved
Alkalinity, total
Carbon dioxide
δ18O, water
Water sample
Chamber for gas sampling
Conductivity sensor Cond 315i, WTW GmbH, Germany
Coulometry
Titration
Equilibrator, 3M, Liqui-Cel [G542, S/N 132462]; followed by Infrared gas analyzer, LI-COR Inc., LI-8100A
Mass spectrometer, Finnigan, Delta-S
PS122/5
Polarstern
Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC
Arctic
Online Access:https://dx.doi.org/10.1594/pangaea.966787
https://doi.pangaea.de/10.1594/PANGAEA.966787
Description
Summary:Melt ponds water sampling for biogeochemical parameters such as dissolved inorganic carbon (DIC), total alkalinity (TA), oxygen isotopes were examined from August to September 2020. To obtain discrete water samples from the melt ponds and leads, we checked the vertical structure and depth of the meltwater layer from the same hole used for the RINKO Profiler by attaching a conductivity sensor (Cond 315i, WTW GmbH, Germany) to a 2-m-long ruler and inserting the ruler into the lead water until the salinity measured with the Cond 315i increased at the meltwater–seawater interface (Nomura et al., 2024) . Water was pumped up with a peristaltic pump through a 2-m-long PTFE tube (L/S Pump Tubing, Masterflex, USA) at depths corresponding to meltwater (surface), the interface between meltwater and seawater (interface), and seawater (bottom). Salinity was measured at each depth by attaching a Cond 315i conductivity sensor to the bottom of the ruler. The tube intake was likewise attached to the bottom of the ruler. ...

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