Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard NOAA Ship Ronald H. Brown during the Atlantic, Pacific and Indian Oceans cruises in 2018 (NCEI Accession 0175723)
INVESTIGATORS:
Rik Wanninkhof 
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
Denis Pierrot
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
Kevin F. Sullivan
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
PACKAGE DESCRIPTION: This dataset includes surface underway, chemical, meteorological and physical data collected from NOAA Ship Ronald H. Brown in the Atlantic, Pacific and Indian Oceans in 2018. These data include air-sea difference of partial pressure of carbon dioxide (pCO2), barometric pressure, pCO2 in atmosphere, pCO2 in water, salinity and sea surface temperature. The instruments used to collect these data include CO2 gas analyzer and shower head chamber equilibrator for autonomous CO2 measurement. These data were collected by Rik Wanninkhof, Denis Pierrot and Kevin Sullivan of NOAA Atlantic Oceanographic and Meteorological Laboratory as part of the SOOP (Ship of Opportunity Program) NOAA Ship Ronald H. Brown 2018 cruises data set.
CITE AS: Wanninkhof, Rik; Pierrot, Denis; Sullivan, Kevin F. (2018). Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard NOAA Ship Ronald H. Brown during the Atlantic, Pacific and Indian Oceans cruises in 2018 (NCEI Accession 0175723). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/xdwr-sn49. Accessed [date].
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0175723
NCEI DOI: https://doi.org/10.25921/xdwr-sn49
EXPOCODE: 33RO20180216;
33RO20180222;
33RO20180307;
33RO20180423;
33RO20180519;
33RO20180616;
33RO20180728;
33RO20180910;
33RO20181008;
CRUISE ID: RB1800 Seatrial;
RB1801 WBTS;
RB1802 PNE;
RB1803-Leg1 GO-Ship I7N;
RB1803-Leg2;
RB1804 RAMAv;
RB1805 TAO (165E, 180W);
RB1806 TAO (140W, 125W);
RB1806 Transit;
TYPES OF STUDY:
Surface underway;
TEMPORAL COVERAGE:
SPATIAL COVERAGE:
GEOGRAPHIC NAMES:
PLATFORMS:
RESEARCH PROJECT(S):
Surface underway;
TEMPORAL COVERAGE:
START DATE: 2018-02-16
END DATE: 2018-10-12
SPATIAL COVERAGE:
NORTH: 33.2
WEST: 162.4
EAST: 120
SOUTH: -36.3
GEOGRAPHIC NAMES:
North Pacific Ocean;South Pacific Ocean;North Atlantic Ocean;South Atlantic Ocean;Indian Ocean;
PLATFORMS:
R/V Ronad H. Brown (ID: 33RO);
RESEARCH PROJECT(S):
Research Cruises;
VARIABLES / PARAMETERS:
| pCO2 (fCO2) autonomous | |
|---|---|
| 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: | The analyzer is calibrated every 3.5 hours using field standards that were calibrated with primary standards that are directly traceable to the WMO X2007 scale. Ultra-High Purity air (0.0 ppm CO2) and the high standard are used to zero and span the LI-COR analyzer. Std 1: CA04957, 282.55 ppm, owned by ESRL, used every ~5.0 hours. Std 2: CC105863, 380.22 ppm, owned by ESRL, used every ~5.0 hours. Std 3: CB09696, 453.04 ppm, owned by ESRL, used every ~5.0 hours. Std 4: CB09032, 539.38 ppm, owned by ESRL, used every ~5.0 hours. Std 5: LL100000, 0.00 ppm, owned by AOML, used every ~19.5 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 | |
|---|---|
| Abbreviation: | SST_C |
| Unit: | degrees celcius |
| Observation type: | Surface Underway |
| Sampling instrument: | Seabird |
| Analyzing instrument: | SBE-45, Seabird, Inc. |
| Detailed sampling and analyzing information: | Ship's TSG in hydro lab near the CO2 system; |
| Uncertainty: | Accuracy: 0.002C, Precision: 0.0002C; Manufacturer's Resolution is taken as Precision; Maintained by ship. |
| Researcher name: | Denis Pierrot |
| Researcher institution: | NOAA/AOML |
| Sea Surface Salinity | |
|---|---|
| Abbreviation: | SAL_permil |
| Observation type: | Surface Underway |
| Sampling instrument: | Seabird |
| Analyzing instrument: | SBE 45, Seabird, Inc. |
| Uncertainty: | Accuracy: +/- 0.005; Precision: 0.0002 |
| Researcher name: | Denis Pierrot |
| Researcher institution: | NOAA/AOML |
| Atmospheric Pressure | |
|---|---|
| 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 |
PUBLICATIONS DESCRIBING THIS DATASET:
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
Feely, R.A., R. Wanninkhof, H.B. Milburn, C.E. Cosca, M. Stapp, and P.P. Murphy, A new automated underway system for making high precision pCO2 measurements onboard research ships, Analytica Chim. Acta, 377, 185-191, 1998.
Wanninkhof, R., & Thoning, K. (1993). Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods. Marine Chemistry, 44(2–4), 189–204. https://doi.org/10.1016/0304-4203(93)90202-y
ADDITIONAL INFORMATION:
none;
FUNDING AGENCY:
NOAA Climate Program Office Program
PROJECT TITLE:
Surface Water pCO2 Measurements from Ships of Opportunity (SOOP)
PROJECT ID:
SUBMITTED BY: Kevin F. Sullivan (Kevin.Sullivan@noaa.gov)
SUBMISSION DATE: 2018-09-11
REVISION DATE: 2019-08-22
PREVIOUS VERSIONS: Version 1.1Version 2.2
