http://lod.bco-dmo.org/id/dataset/753594
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2019-01-23
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Depth profiles of dissolved O2 saturation and isotopologues from the R/V Yellowfin and R/V Kilo Moana from 2016-09-14 to 2017-08-28
2018-11-30
publication
2018-11-30
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-12-05
publication
https://doi.org/10.1575/1912/bco-dmo.753594.1
Laurence Yeung
Rice University
principalInvestigator
William M. Berelson
University of Southern California
principalInvestigator
Edward Young
University of California-Los Angeles
principalInvestigator
Huanting Hu
Rice University
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Hu, H., Yeung, L., Berelson, W., Young, E. (2018) Depth profiles of dissolved O2 saturation and isotopologues from the R/V Yellowfin and R/V Kilo Moana from 2016-09-14 to 2017-08-28. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-11-30 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.753594.1 [access date]
Depth profiles of dissolved O2 saturation and isotopologues Dataset Description: <p>Seawater was sampled from Niskin bottles associated with CTD casts on each cruise. Water for these dissolved gas isotope samples was the first to be sampled from a given Niskin bottle. When possible, bottles from the same cast were sampled, but depth profiles often came from separate casts at the same site.&nbsp;</p> Methods and Sampling: <p>In general, procedures followed those of Reuer et al. 2007. Briefly, 1 and 2-L bottles were pre-poisoned with 200 μL and 400 μL saturated HgCl2 solution, dried, and then evacuated to a pressure of &lt; 10-3 mbar before the gas-tight valve was closed. The Louwer-Hapert 9mm valve sidearm was then filled with distilled water and capped, making sure to remove all visible bubbles, to retard any atmospheric leaks. During sampling, water from the bottom of the Niskin flask was allowed to flow into the sidearm for several seconds (to flush out the distilled water) before the vacuum valve was opened to allow water to be siphoned into the sampling bottle. After sampling—each bottle typically being half full—the sidearm was filled again with seawater and capped until analysis. All gas samples were analyzed within 4 months of sampling.</p>
<p>Before gas analysis, bottles were gently agitated on a shaker table for 48h to equilibrate dissolved gases with the&nbsp;<br />
headspace at room temperature (25C). Next, bottles were inverted and the seawater pumped out. Finally, the headspace gases were extracted and purified according to Li et al. (2019), Yeung et al. (2016), and Yeung et al. (2018), in which O2 is separated from Ar and N2 by gas chromatography. O2/Ar ratios are standardized relative to atmospheric O2 and air dissolved in distilled water. Bulk δ18O and 17Δ values are standardized against atmospheric O2 and O2 derived from laser-fluorination of San Carlos Olivine (Yeung et al. 2018). Clumped-isotope Δ35 and Δ36 values are standardized against laboratory-generated photolytic and heated-gas standards (Yeung et al. 2014).</p>
<p>O2/Ar ratios were determined by integrating the peak areas for each species on an Aglient 7890B gas chromatograph utilizing thermal conductivity detection. Dissolved O2 saturation was determined from these O2/Ar measurements and checked independently through manometric determination of O2 yield and weighing the seawater from which it was extracted. Isotopologue analyses were performed on a custom Nu Instruments Perspective IS high-resolution isotope ratio mass spectrometer at Rice University.<br />
<br />
Data was processed as was done in Yeung et al. (2018) for δ18O and 17Δ values and Yeung et al. (2016) for clumped-isotope values. Dissolved oxygen saturation is calculated using potential temperature and salinity and the O2 and Ar saturation calculated using MATLAB programs by Roberta Hamme (O2sol and Arsol from https://web.uvic.ca/~rhamme/download.html). These calculated values were compared to measured values to determine O2/O2sat.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1436590 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1436590
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1533501 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1533501
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1436326 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1436326
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559004 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559004
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559215 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559215
completed
Laurence Yeung
Rice University
713-348-6304
Department of Earth, Environmental and Planetary Sciences MS-126 6100 Main Street
Houston
TX
77005
US
pointOfContact
William M. Berelson
University of Southern California
310-804-8981
Department of Earth Sciences (ZHS 227) 3651 Trousdale Pky.
Los Angeles
CA
90089-0740
USA
berelson@usc.edu
pointOfContact
Edward Young
University of California-Los Angeles
11000 Kinross Avenue, Suite 211
LOS ANGELES
CA
90095
eyoung@ess.ucla.edu
pointOfContact
Huanting Hu
Rice University
huanting.hu@sjtu.edu.cn
pointOfContact
asNeeded
Dataset Version: 1
Unknown
description
date
Latitude
Longitude
Depth
O2_O2sat
d18O
D17O
D35
D36
mass spectrometer
Niskin bottles
theme
None, User defined
site description
date
latitude
longitude
depth
O2 saturation
oxygen 16 to oxygen 18 ratio
delta17O
dissolved Oxygen
featureType
BCO-DMO Standard Parameters
Mass Spectrometer
Niskin bottle
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: New Constraints on Marine Oxygen Cycling
https://osprey.bco-dmo.org/project/750418
Collaborative Research: New Constraints on Marine Oxygen Cycling
<p>NSF Abstact:</p>
<p>Marine oxygen is strongly linked to the cycling of organic matter in the marine environment, and as such, its budget is central to addressing many of the outstanding questions in oceanography. In this study, researchers will measure the amounts of three isotopes of oxygen that can combine to make up the molecular oxygen gas dissolved in oceanic waters. When oxygen reacts with other substances, the three isotopes can behave in slightly different ways depending on the type of reactions; this makes it possible to identify the kinds of processes that have led to the existence of the oxygen found at different places in the ocean. These results are expected to yield new insights into how oxygen interacts with organisms, organic matter, minerals, and other substances under a variety marine environmental conditions, with important implications for future studies of ocean productivity and hypoxic (low oxygen) zones in the ocean. A female graduate student will gain hands-on experience with these new methods, and results from the research will be disseminated to the general public through social media and a video.</p>
<p>In this project, researchers will make simultaneous measurements of five stable isotopic variants of O2, known as quintuple-isotopologue analysis, to provide new constraints on marine oxygen cycling. Using a combined field and experimental study they will evaluate the potential for the quintuple-isotopologue method to trace marine O2 cycling. Utilizing these novel analytical methods, they will analyze depth profiles and dark bottle incubations of O2 isotopologues in the water column at San Pedro Ocean Time Series (SPOT). These measurements, combined with nutrient profiles and complementary laboratory experiments, will yield a first-order understanding of how photosynthesis, respiration, and mixing affect the isotopologue composition of dissolved marine O2.</p>
O2 isotopologues in the N. Pacific
largerWorkCitation
project
Collaborative Research: CaCO3 Dissolution in the North Pacific Ocean: Comparison of Lab and Field Rates with Biogenic and Abiogenic Carbonates
https://osprey.bco-dmo.org/project/750437
Collaborative Research: CaCO3 Dissolution in the North Pacific Ocean: Comparison of Lab and Field Rates with Biogenic and Abiogenic Carbonates
<p><em>NSF Award Abstract:</em><br />
Ocean acidification (OA) is the decrease in seawater pH due to increased oceanic uptake of anthropogenic carbon dioxide (CO2) from the atmosphere. The impact of this uptake in the marine environment is lessened by the dissolution of calcium carbonate (CaCO3) to calcium and carbonate ions, allowing carbonate ions to bind free hydrogen ions that cause the decrease in pH. Researchers from the University of Southern California and California Institute of Technology have developed a new method for determining carbonate dissolution rates that work in both laboratory and field settings. Preliminary data using this technique has revealed a distinct difference in measured rates between those obtained in the laboratory and those in the field. It is crucial that laboratory and field measurements be standardized to be able to accurately study and compare dissolution rate studies. As such, the researchers will perform extensive fieldwork and laboratory to bridge the gap between these dissolution rate measurements. Results will be widely useful to the ocean chemistry community, especially modelers, wishing to study any aspect of ocean carbonate chemistry, as well as paleoceanographers using carbonate material to study past ocean conditions. Graduate students will be co-mentored by the researchers, and the University of Southern California's (USC) Young Researcher Program will allow the researchers to involve local high school students. USC International Relations students will be involved in the project, not only gaining scientific experience, but also will learn the policy aspect of the science.</p>
<p>Calcium carbonate (CaCO3) dissolution helps to mitigate the effects of ocean acidification (OA) and is a key factor in the ocean's alkalinity balance. The researchers have recently developed a novel tracer methodology which can monitor carbonate dissolution rates in both the lab and field. This method traces the transfer of 13C from labeled solids to seawater. Using this method has led to breakthroughs in understanding the controls of CaCO3 dissolution kinetics, but it has also revealed that the measurements made in a lab and in the field are not entirely in line. It is crucial to be able to correlate these two measurements to be able to fully study and understand the dynamics of CaCO3 dissolution. Therefore, the researchers will extend their previous work to standardize the results of measurements in the lab with those in the ocean. The North Pacific Ocean with a gradient in carbonate saturation states will be used for the field study, and lab-based experiments will allow the researchers to constrain variables such as pressure, the dissolved inorganic carbon/alkalinity ratio, and concentrations of phosphate. This research will further understanding of OA, the mechanisms controlling carbonate dissolution, and how the ocean modulates its alkalinity budget.</p>
CDISK_4
largerWorkCitation
project
eng; USA
oceans
-158
-118.4
22.75
60
2016-09-14
2017-08-28
From projects that focused on the following 2 locations: 1. San Pedro Ocean Time Series (33.5 N 118.4 W) 2. NE Pacific transect (22.75 N to 60 N, 150-160 W)
0
BCO-DMO catalogue of parameters from Depth profiles of dissolved O2 saturation and isotopologues from the R/V Yellowfin and R/V Kilo Moana from 2016-09-14 to 2017-08-28
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/753599.rdf
Name: description
Units: unitless
Description: <p>description of the site</p>
http://lod.bco-dmo.org/id/dataset-parameter/753600.rdf
Name: date
Units: unitless
Description: <p>date of observation in YYYYMMDD format</p>
http://lod.bco-dmo.org/id/dataset-parameter/753601.rdf
Name: Latitude
Units: decimal degrees
Description: <p>latitude north</p>
http://lod.bco-dmo.org/id/dataset-parameter/753602.rdf
Name: Longitude
Units: decimal degrees
Description: <p>longitude east</p>
http://lod.bco-dmo.org/id/dataset-parameter/753603.rdf
Name: Depth
Units: meters (m)
Description: <p>niskin bottle closing depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/753604.rdf
Name: O2_O2sat
Units: unitless
Description: <p>Dissolved O2 saturation</p>
http://lod.bco-dmo.org/id/dataset-parameter/753605.rdf
Name: d18O
Units: parts per thousand
Description: <p>18O value of O2 relative to air-O2</p>
http://lod.bco-dmo.org/id/dataset-parameter/753606.rdf
Name: D17O
Units: parts per million
Description: <p>17Δ value of O2 relative to air-O2; λ = 0.518</p>
http://lod.bco-dmo.org/id/dataset-parameter/753607.rdf
Name: D35
Units: parts per thousand
Description: <p>35 value of O2</p>
http://lod.bco-dmo.org/id/dataset-parameter/753608.rdf
Name: D36
Units: parts per thousand
Description: <p>36 value of O2</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
9089
https://darchive.mblwhoilibrary.org/bitstream/1912/24940/1/dataset-753594_dissolved-o2__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.753594.1
download
onLine
dataset
<p>In general, procedures followed those of Reuer et al. 2007. Briefly, 1 and 2-L bottles were pre-poisoned with 200 μL and 400 μL saturated HgCl2 solution, dried, and then evacuated to a pressure of &lt; 10-3 mbar before the gas-tight valve was closed. The Louwer-Hapert 9mm valve sidearm was then filled with distilled water and capped, making sure to remove all visible bubbles, to retard any atmospheric leaks. During sampling, water from the bottom of the Niskin flask was allowed to flow into the sidearm for several seconds (to flush out the distilled water) before the vacuum valve was opened to allow water to be siphoned into the sampling bottle. After sampling—each bottle typically being half full—the sidearm was filled again with seawater and capped until analysis. All gas samples were analyzed within 4 months of sampling.</p>
<p>Before gas analysis, bottles were gently agitated on a shaker table for 48h to equilibrate dissolved gases with the&nbsp;<br />
headspace at room temperature (25C). Next, bottles were inverted and the seawater pumped out. Finally, the headspace gases were extracted and purified according to Li et al. (2019), Yeung et al. (2016), and Yeung et al. (2018), in which O2 is separated from Ar and N2 by gas chromatography. O2/Ar ratios are standardized relative to atmospheric O2 and air dissolved in distilled water. Bulk δ18O and 17Δ values are standardized against atmospheric O2 and O2 derived from laser-fluorination of San Carlos Olivine (Yeung et al. 2018). Clumped-isotope Δ35 and Δ36 values are standardized against laboratory-generated photolytic and heated-gas standards (Yeung et al. 2014).</p>
<p>O2/Ar ratios were determined by integrating the peak areas for each species on an Aglient 7890B gas chromatograph utilizing thermal conductivity detection. Dissolved O2 saturation was determined from these O2/Ar measurements and checked independently through manometric determination of O2 yield and weighing the seawater from which it was extracted. Isotopologue analyses were performed on a custom Nu Instruments Perspective IS high-resolution isotope ratio mass spectrometer at Rice University.<br />
<br />
Data was processed as was done in Yeung et al. (2018) for δ18O and 17Δ values and Yeung et al. (2016) for clumped-isotope values. Dissolved oxygen saturation is calculated using potential temperature and salinity and the O2 and Ar saturation calculated using MATLAB programs by Roberta Hamme (O2sol and Arsol from https://web.uvic.ca/~rhamme/download.html). These calculated values were compared to measured values to determine O2/O2sat.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:</p>
<p>- added date and description column<br />
- added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
mass spectrometer
mass spectrometer
PI Supplied Instrument Name: mass spectrometer PI Supplied Instrument Description:Isotopologue analyses were performed on a custom Nu Instruments Perspective IS high-resolution isotope ratio mass spectrometer at Rice University. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
Niskin bottles
Niskin bottles
PI Supplied Instrument Name: Niskin bottles PI Supplied Instrument Description:Seawater was sampled from Niskin bottles associated with CTD casts on each cruise. Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/