Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from NOAA Ship Ronald H. Brown cruises RB1301 and RB1302 in the North Atlantic Ocean from 2013-01-08 to 2013-03-04 (NCEI Accession 0162200)
PACKAGE DESCRIPTION: This dataset includes Surface underway, chemical, meteorological and physical data collected from NOAA Ship Ronald H. Brown Cruises RB1301 and RB1302 in the North Atlantic Ocean from 2013-01-08 to 2013-03-04. These data include measurements of mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature, mole fraction of CO2 measured in dry outside air, barometric pressure in the equilibrator headspace, barometric pressure, corrected to sea level, water temperature in equilibrator, sea surface temperature, sea surface salinity, fugacity of CO2 in sea water at SST and 100% humidity, and difference between sea water fCO2 and interpolated air fCO2. The instruments used to collect these data include carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement. These data were collected by Rik Wanninkhof and Denis Pierrot of NOAA Atlantic Oceanographic and Meteorological Laboratory as part of NOAA Ship Ronald H. Brown research cruises RB1301 and RB1302 data set. The cruise Expedition codes (EXPOCODEs) are 33RO20130108 and 33RO20130219.
CITE AS: Wanninkhof, Rik; Sullivan, Kevin F.; Pierrot, Denis (2017). Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from NOAA Ship Ronald H. Brown cruises RB1301 and RB1302 in the North Atlantic Ocean from 2013-01-08 to 2013-03-04 (NCEI Accession 0162200). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5p26wcz. Accessed [date].
none;
Surface underway;
TEMPORAL COVERAGE:
SPATIAL COVERAGE:
GEOGRAPHIC NAMES:
PLATFORMS:
RESEARCH PROJECT(S):
VARIABLES / PARAMETERS:
pCO2 (fCO2) autonomous | |
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Abbreviation: | fCO2_SW@SST |
Unit: | uatm |
Observation type: | Surface underway |
Measured or calculated: | Measured |
Sampling instrument: | Seawater pump |
Location of seawater intake: | Bow |
Analyzing instrument: | Infrared Analyzer: LI-COR model 6262 |
Detailed sampling and analyzing information: | Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep Sea Research Part II: Topical Studies in Oceanography, 56(8-10), 512-522. https://doi.org/10.1016/j.dsr2.2008.12.005 |
Equilibrator type: | Spray head above dynamic pool, with thermal jacket |
Equilibrator volume: | 0.95 L (0.4 L water, 0.55 L headspace) |
Is the equilibrator vented or not: | Vented |
Water flow rate: | 1.5 - 2.0 L/min |
Gas flow rate: | 70 - 150 ml/min |
How was temperature inside the equilibrator measured: | Hart Scientific model 1523 digital thermometer |
How was pressure inside the equilibrator measured: | External Setra 270 connected to the exit of the analyzer |
Drying method for gas: | Gas stream passes through a thermoelectric condenser (~5 C) and then through a Perma Pure (Nafion) dryer before reaching the analyzer (90% dry). |
SEA CO2 gas detector manufacturer: | Licor, Inc |
SEA CO2 gas detector model: | Licor 6262 |
SEA CO2 gas detector resolution: | Accuracy: +/- 2 uatm in fCO2_SW |
SEA CO2 gas detector uncertainty: | Precision: +/- 0.01 uatm in fCO2_SW |
Standardization technique: | The system runs a full cycle in approximately 7 hours. The cycle starts with 4 standard gases, then measures three rounds of 6 atmopherice samples followed by 50 surface water samples. Each new gas is flushed through the Licor Analyzer for 2 minutes prior to a stop-flow measurement. |
Standardization frequency: | Every 7 hours |
Standard gas manufacturer: | Standard gases are supplied by NOAA Earth System Research Laboratory, Global Monitoring Division, in Boulder, CO, and are directly traceable to the WMO scale. |
Standard gas concentration: | Std 1: CA06709, 284.75 ppm, owned by ESRL, used every ~ 3.5 hours. Std 2: CA02813, 363.24 ppm, owned by ESRL, used every ~3.5 hours. Std 3: CA07921, 423.57 ppm, owned by ESRL, used every ~3.5 hours. Std 4: CA07931, 545.88 ppm, owned by ESRL, used every ~3.5 hours. Std 5: 0.00 ppm, owned by AOML, used every ~20.0 hours. |
Standard gas uncertainty: | 0.01 ppm |
Water vapor correction method: | Details of the data reduction are described in Pierrot, et.al. (2009). |
Temperature correction method: | Details of the data reduction are described in Pierrot, et.al. (2009). |
At what temperature was pCO2 reported: | In situ sea surface temperature |
Uncertainty: | 0.01C |
Quality flag convention: | WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value |
Method reference: | Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep Sea Research Part II: Topical Studies in Oceanography, 56(8-10), 512-522. https://doi.org/10.1016/j.dsr2.2008.12.005 |
Researcher name: | Denis Pierrot |
Researcher institution: | NOAA/AOML |
Sea Surface Temperature | |
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Abbreviation: | SST_C |
Unit: | degrees celcius |
Observation type: | Surface Underway |
Analyzing instrument: | SBE-21, Seabird, Inc. |
Detailed sampling and analyzing information: | Bow thruster room, before sea water pump, ~5 m below water line |
Uncertainty: | Accuracy: 0.01C, Precision: 0.001C |
Researcher name: | Denis Pierrot |
Researcher institution: | NOAA/AOML |
Sea Surface Salinity | |
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Abbreviation: | SAL_permil |
Observation type: | Surface Underway |
Analyzing instrument: | SBE 45, Seabird, Inc. |
Uncertainty: | Accuracy: +/- 0.005; Precision: 0.0002 |
Researcher name: | Denis Pierrot |
Researcher institution: | NOAA/AOML |
Atmospheric Pressure | |
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Abbreviation: | PRES_ATM@SSP_hPa |
Unit: | hPa |
Sampling instrument: | Vaisala, PTB330 |
Detailed sampling and analyzing information: | Location: On bulkhead exterior on the port side of the radio room aft of the bridge at ~14 m above the sea surface |
Uncertainty: | Accuracy: +/- 0.2 hPa; Precision: 0.08 hPa |
Researcher name: | Denis Pierrot |
Researcher institution: | NOAA/AOML |
SUBMITTED BY: Kevin F. Sullivan (Kevin.Sullivan@noaa.gov)
SUBMISSION DATE: 2017-02-09