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OAS accession Detail for 0278747
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| accessions_id: | 0278747 | archive |
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| Title: | Underway pCO2 from the R/V Pelican cruise GOM_UW_1704 conducted in the Northern Gulf of Mexico in April 2017 (NCEI Accession 0278747) |
| Abstract: | This dataset contains chemical and physical data collected on R/V Pelican during cruise PE17-18 in the Gulf of Mexico from 2017-04-06 to 2017-04-16. These data include pCO2 and salinity calculated from CTD primary sensors. The instruments used to collect these data include LI-COR LI-7000 Gas Analyzer, Sea-Bird SBE 45 MicroTSG Thermosalinograph, and pCO2 Sensor. These data were collected by Dr Katja Fennel of Dalhousie University, Dr Nancy Rabalais of Louisiana State University, and Dr Wei-Jun Cai of University of Delaware as part of the "Collaborative Research: pH Dynamics and Interactive Effects of Multiple Processes in a River-Dominated Eutrophic Coastal Ocean (nGOMx acidification)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2019-07-10. The following is the text of the dataset description provided by BCO-DMO: Underway pCO2 from nGOM cruise conducted in April 2017 Dataset Description: Underway pCO2 from R/V Pelican cruise GOM_UW_1704 conducted in northern Gulf of Mexico in April 2017. |
| Date received: | 20190710 |
| Start date: | 20170406 |
| End date: | 20170416 |
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| West boundary: | -93.422 |
| East boundary: | -88.798 |
| North boundary: | 29.645 |
| South boundary: | 27.49 |
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| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
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| Supplementary information: | Acquisition Description: Underway sea surface temperature, salinity, and pCO2 data were collected continuously along the cruise track. Surface seawater was collected from an intake on the port side of the ship at about 4m depth. SST and SSS were measured by an SBE45 (Sea-Bird Electronics) Thermosalino graph installed in the sea chest. Seawater was pumped to the ship's labs. There, underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector at a water flow rate of 3-4L/min; The sampling interval was 2 min. This autonomous system was twice daily against three certified CO2 gas standards (150.62, 404.72, and 992.54 ppm) obtained from NOAA's Earth System Research Laboratory (ESRL), Global Monitoring Division in Boulder, CO. These gas standards are directly traceable to the World Meteorological Organization (WMO) scale. The precision of underway pCO2 measurements of this system is 0.1 μatm, and the overall accuracy is estimated at 2 μatm, as documented by Pierrot et al. (2009). The underway system uses a shower head type equilibrator with ~0.5L headspace volume. Instruments: Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector . The pCO2 measurement was calibrated twice daily against 3 certified CO2 gas standards (150.62, 404.72, and 992.54 ppm) |
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| Metadata version: | 1 |
| Keydate: | 2023-05-26 04:12:15+00 |
| Editdate: | 2023-05-26 04:13:05+00 |