Rex, Markus; Hoppmann, Mario; Tippenhauer, Sandra; Rohardt, Gerd (2021): Continuous thermosalinograph oceanography along RV POLARSTERN cruise track PS122/5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930028
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Abstract:
Raw data acquired by two thermosalinographs (SBE21, SeaBird GmbH) on board RV Polarstern were processed to yield a calibrated and validated data set of temperature, conductivity and salinity during expedition PS122/5. Both sensors were equipped with a more accurate external temperature sensor (SBE38, Sea-Bird GmbH). Data were downloaded from the DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. The raw hex data were converted to temperature and conductivity while a sensor drift correction was applied using calibration coefficients from before and after the expedition. Salinity was calculated according to the instructions from the Practical Salinity Scale PSS-78, using the obtained (internal) temperature and conductivity data and a pressure of 11 dbar which represents the water depth of the inlet of the TSG system on Polarstern. Processed data are provided as 10min means of salinity and water temperature aligned with position data taken from master track of the respective cruise. A speed filter was not applied to the PS122 dataset because of the slow drift speed. This slow movement may lead to an overestimation of the mixed-layer temperature; in particular, small heat fluxes from the ship may raise the temperature in adjacent water in the lee, i.e. during times of drift in the direction opposite to the TSG inlet. The effect is expected to be small, but can potentially be higher than the accuracy of the temperature measurement. Further details and evaluation of the data is outlined in the data processing report found at the EPIC repository under URL (https://hdl.handle.net/10013/epic.7fffb528-06bd-48ae-8489-cea0444c4eab).
Data processing report:
Rohardt, Gerd (2021): Continuous thermosalinograph oceanography along RV POLARSTERN cruise track PS122_5. hdl:10013/epic.81cb5601-b909-46fd-9296-c31fd8b177dd
Rohardt, Gerd (2021): General processing report of continuous thermosalinograph oceanography from POLARSTERN cruises PS121, PS122_1, PS122_2, PS122_3, PS122_4 and PS122_5. hdl:10013/epic.7fffb528-06bd-48ae-8489-cea0444c4eab
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
Coverage:
Median Latitude: 84.672978 * Median Longitude: 66.411096 * South-bound Latitude: 56.632132 * West-bound Longitude: -176.208611 * North-bound Latitude: 89.999797 * East-bound Longitude: 147.669059
Date/Time Start: 2020-08-12T10:10:00 * Date/Time End: 2020-10-11T06:10:00
Minimum DEPTH, water: 11 m * Maximum DEPTH, water: 11 m
Event(s):
PS122/5_0_Underway-35 * Latitude Start: 80.063363 * Longitude Start: -6.127935 * Latitude End: 53.558496 * Longitude End: 8.550041 * Date/Time Start: 2020-08-12T10:03:42 * Date/Time End: 2020-10-12T05:59:59 * Elevation: -310.6 m * O2A Registry URI: registry.o2a-data.de * Location: North Greenland Sea * Campaign: PS122/5 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Thermosalinograph (TSG) * Comment: Keel 1
Comment:
We thank Franziska Nehring (Fielax) for the processing of the data. We acknowledge the support of Winfried Markert and Olaf Hüttebräucker (Laeisz) for maintenance of the instruments on board. We appreciate the help of the PANGAEA team for their help in archiving the dataset.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Hoppmann, Mario | Geocode | ||
| 2 | LATITUDE | Latitude | Hoppmann, Mario | Geocode | ||
| 3 | LONGITUDE | Longitude | Hoppmann, Mario | Geocode | ||
| 4 | DEPTH, water | Depth water | m | Hoppmann, Mario | Geocode | |
| 5 | Temperature, water | Temp | °C | Hoppmann, Mario | Digital oceanographic thermometer, Sea-Bird, SBE 38 | |
| 6 | Temperature, water, internal | T intern | °C | Hoppmann, Mario | Thermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT | |
| 7 | Conductivity | Cond | mS/cm | Hoppmann, Mario | Thermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT | |
| 8 | Salinity | Sal | Hoppmann, Mario | Calculated from temperature and conductivity |
Change history:
2023-01-23T09:24:22 – Parameter "DEPTH, water" was added.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
34396 data points
Download Data
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