Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin collected from R/V Endeavor cruise EN541 in July 2014 (NCEI Accession 0278818)
This dataset contains chemical and physical data collected on R/V Endeavor during cruise EN541 from 2014-07-09 to 2014-07-13. These data include density, depth, dissolved inorganic Carbon, methane, pH, salinity calculated from CTD primary sensors, water pressure, and water temperature. The instruments used to collect these data include Accelerator Mass Spectrometer, Flame Ionization Detector, Gas Chromatograph, Niskin bottle, Spectrometer, and Spectrophotometer. These data were collected by John D. Kessler of University of Rochester as part of the "Investigating the chemical and isotopic kinetics of aerobic methane oxidation (Aerobic methane oxidation)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-03-05.
The following is the text of the dataset description provided by BCO-DMO:
Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin
Dataset Description:
Measurements of natural radiocarbon of DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin.
Methane concentration data was published by Weinstein et al. (2016) and Leonte et al., (2017).
The DIC and pH data are published as: Garcia-Tigreros, F. and Kessler, J.D. (2018)
Underway data for cruise EN541 was published and can be access at R2R: https://doi.org/10.7284/903242
The following is the text of the dataset description provided by BCO-DMO:
Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin
Dataset Description:
Measurements of natural radiocarbon of DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin.
Methane concentration data was published by Weinstein et al. (2016) and Leonte et al., (2017).
The DIC and pH data are published as: Garcia-Tigreros, F. and Kessler, J.D. (2018)
Underway data for cruise EN541 was published and can be access at R2R: https://doi.org/10.7284/903242
Dataset Citation
- Cite as: Kessler, John D. (2023). Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin collected from R/V Endeavor cruise EN541 in July 2014 (NCEI Accession 0278818). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278818. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0278818
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 2014-07-09 to 2014-07-13 |
Spatial Bounding Box Coordinates |
West: -72.42284
East: -72.20012
South: 39.2878
North: 39.5668
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Acquisition Description: Methodology: Dissolved inorganic carbon concentration ([DIC]) samples were measured by acidification and subsequent release of CO 2 with a CO 2 cavity-ringdown spectrometer (CRDS; Picarro G1101- i ) detector to an accuracy and precision better than ± 3 umol/kg. Precision is based on a set of 15 duplicates. Accuracy is based on certified reference materials prepared at the Scripps Institution of Oceanography of the University of California, San Diego. Samples for pH were measured spectrophotometrically on board using an Agilent Cary 100 UV-Visible spectrophotometer and m-cresol purple dye (Clayton and Byrne, 1993; Liu et al., 2011). The pH values are reported on the total scale with a precision better than 0.0002 based on duplicate measurements. The estimated accuracy of spectrophotometric pH is better than 0.002. Natural radiocarbon samples of DIC (∆ 14 C-DIC) were analyzed at the W. M. Keck Carbon Cycle Accelerator Mass Spectrometry Laboratory at the University of California, Irvine. The accuracy and precision of the ∆ 14 C-DIC measurements is 0.1‰ and 1.7‰, respectively. Sampling and analytical procedures: Discrete seawater samples were collected inside Hudson Canyon, US Atlantic Margin aboard the R/V Endeavor from 9 - 13 of July 2014. A total 19 stations and 216 samples were collected along Hudson Canyon and another station was sampled outside the canyon (station E2-HC2). Samples were collected from a bottle Rosette following the procedures in SOP 1 and 6b in Dickson et al., (2007). [DIC] samples were collected in acid washed and combusted 120 mL serum vials. Vials were allowed to overflow three times their volume, poisoned with 50 uL of a 55 uM HgCl 2 , capped, and store at 4 degrees C until analysis. ∆ 14 C-DIC samples were collected in combusted 1L borosilicate bottles, poisoned with 200 uL of a 55 uM HgCl 2 , sealed and stored in the dark at room temperature until isotope analysis. CH 4 concentration analyses were collected by filling 60, 120, or 160 mL glass serum vials. Vials were filled from the bottom with a length of 1/4" Tygon tubing. Vials were flushed with seven vial volumes of seawater to expel any bubbles and ensure collection of a clean sample, and then were sealed with butyl rubber stoppers taking care not to introduce bubbles during sealing. Immediately after sealing, a 10 mL headspace of ultrahigh purity nitrogen was introduced, displacing an equal volume of water, and the samples were preserved by adding 25 uL of a saturated solution of mercuric chloride. The vials were stored inverted to minimize diffusive gas exchange through the butyl rubber stopper. CH 4 concentration measurements were performed using an Agilent 6850 gas chromatograph with a flame ionization detector (GC-FID) following established protocols reported in Weinstein et al. (2016). The uncertainty associated with these measurements was 5.2% based on duplicate measurements. |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
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Last Modified: 2024-05-31T15:15:28Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov