Continuous thermosalinograph oceanography along RV POLARSTERN cruise track PS121

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 PS121. Both sensors were equipped with a more accurate external temperature sensor (SBE38,...

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Bibliographic Details
Main Authors: Metfies, Katja, Hoppmann, Mario, Tippenhauer, Sandra, Rohardt, Gerd
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
Calculated from temperature and conductivity
Conductivity
DATE/TIME
LATITUDE
LONGITUDE
North Sea
Polarstern
PS121
PS121_0_Underway-65
Salinity
T/S data
Temperature
water
internal
Thermometer
SBE 38
Thermosalinograph
SBE 21
TSG
Berichte zur Polar- und Meeresforschung
Reports on Polar and Marine Research
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.930022
https://doi.org/10.1594/PANGAEA.930022
Description
Summary: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 PS121. 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. A speed filter of 0.5 knots minimum speed was applied. Processed data are provided as 10min means of seawater salinity, conductivity and temperature, aligned with position data taken from the master track of PS121 (doi:10.1594/PANGAEA.908157). 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).

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