Surface underway measurements of partial pressure of carbon dioxide (pCO2), salinity, temperature and other associated parameters during the R/V Maria S. Merian cruise (EXPOCODE 06M220180302) in Mediterranean Sea from 2018-03-02 to 2018-04-03 (NCEI Accession 0208442)
INVESTIGATORS:
Toste Tanhua 
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Tobias Steinhoff
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
PACKAGE DESCRIPTION: Surface underway measurements of partial pressure of carbon dioxide (pCO2), salinity, temperature and other associated parameters during the R/V Maria S. Merian GO-SHIP cruise (EXPOCODE 06M220180302) in Mediterranean Sea from 2018-03-02 to 2018-04-03
CITE AS: Tanhua, Toste; Steinhoff, Tobias (2020). Surface underway measurements of partial pressure of carbon dioxide (pCO2), salinity, temperature and other associated parameters during the R/V Maria S. Merian cruise (EXPOCODE 06M220180302) in Mediterranean Sea from 2018-03-02 to 2018-04-03 (NCEI Accession 0208442). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/z7en-hn85. Accessed [date].
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0208442
NCEI DOI: https://doi.org/10.25921/z7en-hn85
EXPOCODE: 06M220180302;
CRUISE ID: GO-SHIP;
SECTION/LEG: MedSea;
TYPES OF STUDY:
Surface measurement;Surface underway;
TEMPORAL COVERAGE:
SPATIAL COVERAGE:
GEOGRAPHIC NAMES:
PLATFORMS:
RESEARCH PROJECT(S):
Surface measurement;Surface underway;
TEMPORAL COVERAGE:
START DATE: 2018-03-02
END DATE: 2018-04-03
SPATIAL COVERAGE:
NORTH: 40.4
WEST: -6.7
EAST: 26.7
SOUTH: 34.1
GEOGRAPHIC NAMES:
Mediterranean Sea;
PLATFORMS:
R/V Maria S. Merian (ID: 06M2);
RESEARCH PROJECT(S):
The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP);
VARIABLES / PARAMETERS:
| pCO2 (fCO2) autonomous | |
|---|---|
| Abbreviation: | pCO2 |
| Unit: | µatm |
| Observation type: | Surface underway |
| Measured or calculated: | Measured |
| Sampling instrument: | Seawater pump |
| Detailed sampling and analyzing information: | A HydroC-CO2 sensor (CO2-1117-001) from Contros was used for the measurements. It was pre calibrated shortly before the cruise (12.12.2017) and post calibrated about one year following the cruise (06.03.2019). It was placed on deck of the RV and surface water was pumped continuously from the intake to the sensor. Calculations were performed following Fietzek et al. (2014) and a data processing sheet for the HydroC sensor from Contros. After comparing the calculated data to calculated values from discrete DIC and TA measurements (CO2SYS), the uncertainty of 10 µatm was determined. |
| SEA CO2 gas detector resolution: | Precision ± 10 µatm |
| At what temperature was pCO2 reported: | In situ sea surface temperature |
| Uncertainty: | Remarks to data processing: - calibration of the data, due to drifting sensor. Calibration with measured zero runs three times a day and a pre and post calibration of the company Contros following Fietzek et al. (2014). Flagging of data - after comparison of DShip temperature and measured Optode temperature next to the sensor some points were cut. - the data was set to the SST (DShip temperature). - due to intake time and measuring time being 3.5 minutes apart, the dataset was shifted 3.5 minutes to fit with the intake temperature. - due to station measurements and two jet pumps of the ship mixing the surface water to keep the ship at position, only measurements with ship speed higher than 2 kn were taken into account. - flagging of some data points by hand, who showed sudden changes in the measured data. |
| Method reference: | P. Fietzek, B. Fiedler, T. Steinhoff, A. Koertzinger. In situ Quality Assessment of a Novel Underwater pCO2 Sensor Based on Membrane Equilibration and NDIR Spectrometry. 2014. Journal of Atmospheric and Oceanic Technology, 31, 181-196. |
| Researcher name: | Toste Tanhua |
| Researcher institution: | GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany |
| Sea Surface Temperature | |
|---|---|
| Abbreviation: | SST_C |
| Unit: | degrees celcius |
| Observation type: | Surface Underway |
| Analyzing instrument: | SBE45 |
| Detailed sampling and analyzing information: | SST was measured with two thermosalinographs from Seabird (SBE45) which measured alternating every 6h. When not measuring the thermosalinograph was cleaned |
| Uncertainty: | ± 0.001 deg C |
| Researcher name: | Toste Tanhua |
| Researcher institution: | GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany |
| Sea Surface Salinity | |
|---|---|
| Abbreviation: | SSS |
| Observation type: | Surface Underway |
| Analyzing instrument: | SBE45, |
| Detailed sampling and analyzing information: | SSS was measured with two thermosalinographs from Seabird (SBE45) which measured alternating every 6h. When not measuring the thermosalinograph was cleaned |
| Uncertainty: | ± 0.5 PSU |
| Researcher name: | Toste Tanhua |
| Researcher institution: | GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany |
| Barometreic pressure | |
|---|---|
| Abbreviation: | Atm. Pressure |
| Unit: | mbar |
| Analyzing instrument: | Druck barometer |
| Detailed sampling and analyzing information: | Atmospheric pressure was measured using a Druck barometer with a precision of 0.2%. The sensor is installed at approximately 5m height and pressure is corrected to sea level. |
| Uncertainty: | ± 0.1 mbar |
| Researcher name: | Claire Lo Monaco |
| Researcher institution: | Univ P et M Curie, France |
PUBLICATIONS DESCRIBING THIS DATASET:
P. Fietzek, B. Fiedler, T. Steinhoff, A. Körtzinger. In situ Quality Assessment of a Novel Underwater pCO2 Sensor Based on Membrane Equilibration and NDIR Spectrometry. 2014. Journal of Atmospheric and Oceanic Technology, 31, 181-196.
ADDITIONAL INFORMATION:
none;
FUNDING AGENCY:
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
PROJECT TITLE:
PROJECT ID:
SUBMITTED BY: Tobias Steinhoff (tsteinhoff@geomar.de)
SUBMISSION DATE: 2020-01-09
