Nomura, Daiki; Kawaguchi, Yusuke; Hoppmann, Mario; Damm, Ellen; Li, Yuhong (2022): Profiles of temperature, salinity and dissolved oxygen measured by a handheld CTD in a lead during expedition PS122/5 (MOSAiC Leg 5) to the central Arctic in August-September 2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945337
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Published: 2022-06-13 • DOI registered: 2022-08-24
Abstract:
18 profiles of seawater temperature, salinity and dissolved oxygen were obtained in a lead next to the MOSAiC Leg5 ice camp between 23 August and 17 September 2020. A Rinko handheld CTD (JFE Advantech Co., Ltd., Japan) was carefully lowered into the lead on a regular basis to determine the spatial distribution and temporal evolution of the stratification in the upper 5 m. The several meter wide lead had formed from an initially small crack through the main ice floe on 24 August 2020. Ice dynamics caused the lead to successively open and close throughout the study period. Lead widths were recorded via a laser distance meter during each profile. A fresh meltwater layer was detected at several locations beneath the floe, and was also observed in the lead. As part of a dedicated study, the present dataset documents the evolution of this layer.
Related to:
Rex, Markus (2021): Master tracks in different resolutions of POLARSTERN cruise PS122/5, Arctic Ocean - Bremerhaven, 2020-08-12 - 2020-10-12 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.926910
Project(s):
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
Japan Society for the Promotion of Science (JSPS), grant/award no. JP18KK0292: Joint research between Germany and Japan on the Arctic moistening
Coverage:
Median Latitude: 88.096692 * Median Longitude: 108.590282 * South-bound Latitude: 87.760770 * West-bound Longitude: 97.344120 * North-bound Latitude: 89.064370 * East-bound Longitude: 120.700130
Date/Time Start: 2020-08-23T11:59:31 * Date/Time End: 2020-09-17T06:14:04
Minimum DEPTH, water: 0.01 m * Maximum DEPTH, water: 5.13 m
Event(s):
PS122/5_59-225 * Latitude: 87.760769 * Longitude: 106.057571 * Date/Time: 2020-08-23T12:00:00 * Elevation: -4318.7 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/5 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD profiler, JFE Advantech, RINKO-Profiler * Comment: Melt pond 3, CTD by Daiki et al. 10 m
PS122/5_59-226 * Latitude: 87.761484 * Longitude: 106.072934 * Date/Time: 2020-08-23T12:19:00 * Elevation: -4318.7 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/5 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD profiler, JFE Advantech, RINKO-Profiler * Comment: Melt pond 4, CD by Daiki et al. 120 cm
PS122/5_59-230 * Latitude: 87.762156 * Longitude: 106.086481 * Date/Time: 2020-08-23T12:37:00 * Elevation: -4318.4 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/5 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD profiler, JFE Advantech, RINKO-Profiler * Comment: Melt pond 8, CTD by Daiki et al. 10 m
Comment:
The data were produced as part of the international Multidisciplinary drifting Observatory for the Study of the Arctic Climate (MOSAiC) with the tag MOSAiC20192020 (grant number AWI_PS122_00). We thank the crew of the RV Polarstern, and in particular the chief scientist Markus Rex. We express our gratitude to all participants of the expedition, particularly to the logistic support for making this endeavor possible, the polar bear guards for keeping us safe and to Alison Webb, Manuel Dall'osto, Katrin Schmidt, Elise Droste, and Emelia Chamberlain for the field support. This study was supported by the Japan Society for the Promotion of Science (grant numbers: JP18H03745; JP18KK0292; JP17KK0083; JP17H04715; JP20H04345; JP16H01596) and by a grant from the Joint Research Program of the Japan Arctic Research Network Center.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Nomura, Daiki | |||
| 2 | DATE/TIME | Date/Time | Nomura, Daiki | Geocode | ||
| 3 | LATITUDE | Latitude | Nomura, Daiki | Geocode | ||
| 4 | LONGITUDE | Longitude | Nomura, Daiki | Geocode | ||
| 5 | Site | Site | Nomura, Daiki | sampling site | ||
| 6 | DEPTH, water | Depth water | m | Nomura, Daiki | Geocode | |
| 7 | Temperature, water | Temp | °C | Nomura, Daiki | CTD profiler, JFE Advantech, RINKO-Profiler | |
| 8 | Salinity | Sal | Nomura, Daiki | Calculated from temperature and conductivity | psu | |
| 9 | Oxygen, dissolved | DO | mg/l | Nomura, Daiki | CTD profiler, JFE Advantech, RINKO-Profiler | |
| 10 | Oxygen, dissolved | DO | ml/l | Nomura, Daiki | CTD profiler, JFE Advantech, RINKO-Profiler | |
| 11 | Width of the lead, fracture or crack | ICELWD | m | Nomura, Daiki |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
10746 data points
Download Data
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