http://lod.bco-dmo.org/id/dataset/897484 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 2023-06-13 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Noble gas isotope data from field campaigns sampling groundwater in Umatilla, Oregon during September 2020 and in Tucson, Arizona during November 2021 2023-06-13 publication 2023-06-13 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2023-07-31 publication https://doi.org/10.26008/1912/bco-dmo.897484.1 Jeffrey Severinghaus University of California-San Diego Scripps 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: Severinghaus, J. (2023) Noble gas isotope data from field campaigns sampling groundwater in Umatilla, Oregon during September 2020 and in Tucson, Arizona during November 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-06-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.897484.1 [access date] Noble gas isotope data from Oregon and Arizona groundwater Dataset Description: Methods and Sampling: &lt;p&gt;Field campaigns to sample groundwater were conducted in Umatilla, Oregon, USA during September 2020 and in Tucson, Arizona, USA during November 2021. Water samples for dissolved noble gas isotope measurements were collected in 6-liter (L) pre-evacuated stainless steel flasks (Restek TO-can air sampling flasks sealed with a Swagelok SS-4H valve), leaving 1 L of headspace. The sample gases were equilibrated between the dissolved phase in the sample water and the gas phase in the headspace on an orbital shaker for at least 3 days at a constant known temperature. After the sample water was drained, the headspace gas was transferred and gettered to remove non-inert gases. The remaining gas sample was measured on a dynamic isotope ratio mass spectrometer (IRMS), and the measured isotope ratios were corrected using known solubilities (Seltzer et al., 2019) and the recorded equilibration temperature to obtain the original isotope ratios of the water sample (Ng et al., 2023). Umatilla samples were stored for a year at room temperature prior to sampling. Tucson samples were stored for 2 weeks at room temperature prior to sampling.&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1924394 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1924394 completed Jeffrey Severinghaus University of California-San Diego Scripps 858-534-8752 9500 Gilman Drive # 0244 La Jolla CA 92093 USA jseveringhaus@ucsd.edu pointOfContact asNeeded Dataset Version: 1 Unknown State_ID Location Site Lat Lon Elevation_m Elevation_ft Pressure_atm Mid_screen_depth_ft Screen_length_ft Depth_to_water_ft Sampling_date NG_method He He_err Ne Ne_err Ar Ar_err Kr Kr_err Xe Xe_err dXe dKr d40_36_Ar d40_36_err d38_36_Ar d38_36_err d86_82_Kr d86_82_err d86_83_Kr d86_83_err d86_84_Kr d86_84_err d136_129_Xe d136_129_err d134_129_Xe d134_129_err d132_129_Xe d132_129_err WTD WTD_err MAT-253 dual inlet dynamic mass spectrometer MKS 122b-11993 100 Torr barotron theme None, User defined Site_ID site latitude longitude site description barometric pressure depth length date sampling_method dissolved noble gas concentration depth_w featureType BCO-DMO Standard Parameters Isotope-ratio Mass Spectrometer Pressure Sensor 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: Novel constraints on air-sea gas exchange and deep ocean ventilation from high-precision noble gas isotope measurements in seawater https://osprey.bco-dmo.org/project/887496 Collaborative Research: Novel constraints on air-sea gas exchange and deep ocean ventilation from high-precision noble gas isotope measurements in seawater <p><em>NSF Award Abstract:</em><br /> The proposed work brings together the fields of chemical oceanography, ocean modeling, and solid Earth geochemistry to develop the stable isotope composition of heavy noble gases dissolved in seawater as novel physical tracers of air-sea gas exchange. Noble gases represent ideal tools for quantifying physical processes due to the fact that they are chemically inert. Because argon (Ar), krypton (Kr), and xenon (Xe) isotope ratios have distinct solubility and diffusivity ratios, as recently quantified in laboratory experiments, they complement existing bulk noble gas measurements in seawater by adding new constraints with unique sensitivities. Precise constraints on air-sea exchange of inert gases are paramount to properly quantifying production, consumption, and physical transport of biogeochemically important gases (such as carbon dioxide and oxygen) as well as ventilation age tracers (such as sulfur hexafluoride and CFCs). Additionally, global circulation models (GCMs) routinely underestimate deep-ocean ventilation compared to noble gas observations. Introducing these new isotopic constraints into model simulations will help identify physical processes related to deep-water formation that require improvement in future GCM development. Because the overturning circulation is closely tied to projections of future climate, by both the transports of radiative gases and heat into the deep ocean, there is broad international interest in improving future model projections. Therefore, adding high-precision noble gas isotope measurements to the existing body of research on inert gases in seawater will provide valuable new constraints for both the marine biogeochemistry and physical oceanography communities. Education and training of a graduate student and postdoctoral scholar will contribute to the human resource base of the United States.</p> <p>The proposed work will develop high-precision Ar, Kr, and Xe stable isotope ratios in seawater as new oceanographic tracers. Along with a 2018 pilot study, the proposed measurements represent the first high- precision Kr and Xe isotope ratio analyses in seawater. A key goal of this project is to test two specific hypotheses for the observed undersaturation of Ar, Kr, and Xe throughout the deep ocean: (1) rapid cooling-induced gas uptake by the surface ocean during deep-water formation with insufficient time for equilibration before sinking, or (2) subsurface cooling caused by melting of glacial ice, leading to the dissolution of air bubbles trapped in ice. Whereas both of these non-mutually exclusive processes produce similar patterns of heavy noble gas undersaturation, the isotope ratios of these gases are well suited to distinguish the relative importance of each process. Specifically, theoretical predictions suggest a decrease in heavy-to-light isotope ratios from the kinetic fractionation associated with rapid surface ocean gas uptake, but an increase in these ratios from the input of gravitationally enriched glacial meltwater. Other goals include: (a) comparing observations to model simulations to identify successes and shortcomings of GCM representations of deep-water formation processes, and (b) a year-long time series of surface-ocean observations from the SIO pier to test models of isotopic fractionation associated with bubble injection and upwelling, with implications for the saturation of biogeochemically important gases. This work will improve upon a recent method for dissolved noble gas isotopic analysis by increasing sample sizes and refining purification techniques to achieve a &gt;60% improvement in precision.</p> <p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p> HPNGI largerWorkCitation project eng; USA oceans -119.81 -110.73 32.14 46.05 2020-09-15 2021-11-12 North Atlantic 0 BCO-DMO catalogue of parameters from Noble gas isotope data from field campaigns sampling groundwater in Umatilla, Oregon during September 2020 and in Tucson, Arizona during November 2021 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/897496.rdf Name: State_ID Units: unitless Description: <p>State identification number of well (Umatilla sites only)</p> http://lod.bco-dmo.org/id/dataset-parameter/897497.rdf Name: Location Units: unitless Description: <p>Location of sampling (Umatilla or Tucson)</p> http://lod.bco-dmo.org/id/dataset-parameter/897498.rdf Name: Site Units: unitless Description: <p>Name of well</p> http://lod.bco-dmo.org/id/dataset-parameter/897499.rdf Name: Lat Units: decimal degrees Description: <p>Latitude of sampling location where positive values = North</p> http://lod.bco-dmo.org/id/dataset-parameter/897500.rdf Name: Lon Units: decimal degrees Description: <p>Longitude of sampling location where negative values = West</p> http://lod.bco-dmo.org/id/dataset-parameter/897501.rdf Name: Elevation_m Units: meters (m) Description: <p>Elevation of sampling location in meters</p> http://lod.bco-dmo.org/id/dataset-parameter/897502.rdf Name: Elevation_ft Units: feet (ft) Description: <p>Elevation of sampling location in feet</p> http://lod.bco-dmo.org/id/dataset-parameter/897503.rdf Name: Pressure_atm Units: atmosphere (atm) Description: <p>Pressure</p> http://lod.bco-dmo.org/id/dataset-parameter/897504.rdf Name: Mid_screen_depth_ft Units: feet (ft) Description: <p>Mid screen depth</p> http://lod.bco-dmo.org/id/dataset-parameter/897505.rdf Name: Screen_length_ft Units: feet (ft) Description: <p>Screen length</p> http://lod.bco-dmo.org/id/dataset-parameter/897506.rdf Name: Depth_to_water_ft Units: feet (ft) Description: <p>Depth to water</p> http://lod.bco-dmo.org/id/dataset-parameter/897507.rdf Name: Sampling_date Units: unitless Description: <p>Date of sampling</p> http://lod.bco-dmo.org/id/dataset-parameter/897508.rdf Name: NG_method Units: unitless Description: <p>Method used for noble gas sampling and analysis; LVE refers to large volume equilibration method (Ng et al., 2022); CT means copper tube.</p> http://lod.bco-dmo.org/id/dataset-parameter/897509.rdf Name: He Units: cubic centimeters per gram (cc/g) Description: <p>Helium</p> http://lod.bco-dmo.org/id/dataset-parameter/897510.rdf Name: He_err Units: cubic centimeters per gram (cc/g) Description: <p>Standard error for He</p> http://lod.bco-dmo.org/id/dataset-parameter/897511.rdf Name: Ne Units: cubic centimeters per gram (cc/g) Description: <p>Neon</p> http://lod.bco-dmo.org/id/dataset-parameter/897512.rdf Name: Ne_err Units: cubic centimeters per gram (cc/g) Description: <p>Standard error for Ne</p> http://lod.bco-dmo.org/id/dataset-parameter/897513.rdf Name: Ar Units: cubic centimeters per gram (cc/g) Description: <p>Argon</p> http://lod.bco-dmo.org/id/dataset-parameter/897514.rdf Name: Ar_err Units: cubic centimeters per gram (cc/g) Description: <p>Standard error for Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897515.rdf Name: Kr Units: cubic centimeters per gram (cc/g) Description: <p>Krypton</p> http://lod.bco-dmo.org/id/dataset-parameter/897516.rdf Name: Kr_err Units: cubic centimeters per gram (cc/g) Description: <p>Standard error for Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897517.rdf Name: Xe Units: cubic centimeters per gram (cc/g) Description: <p>Xenon</p> http://lod.bco-dmo.org/id/dataset-parameter/897518.rdf Name: Xe_err Units: cubic centimeters per gram (cc/g) Description: <p>Standard error for Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897519.rdf Name: dXe Units: per mil (‰) Description: <p>d*Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897520.rdf Name: dKr Units: per mil (‰) Description: <p>d*Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897521.rdf Name: d40_36_Ar Units: per mil (‰) Description: <p>d40/36 Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897522.rdf Name: d40_36_err Units: per mil (‰) Description: <p>Standard error for d40_36_Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897523.rdf Name: d38_36_Ar Units: per mil (‰) Description: <p>d38/36 Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897524.rdf Name: d38_36_err Units: per mil (‰) Description: <p>Standard error for d38_36_Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897525.rdf Name: d86_82_Kr Units: per mil (‰) Description: <p>d86/82 Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897526.rdf Name: d86_82_err Units: per mil (‰) Description: <p>Standard error for d38_36_Ar</p> http://lod.bco-dmo.org/id/dataset-parameter/897527.rdf Name: d86_83_Kr Units: per mil (‰) Description: <p>d86/83 Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897528.rdf Name: d86_83_err Units: per mil (‰) Description: <p>Standard error for d86_83_Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897529.rdf Name: d86_84_Kr Units: per mil (‰) Description: <p>d86/84 Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897530.rdf Name: d86_84_err Units: per mil (‰) Description: <p>Standard error for d86_84_Kr</p> http://lod.bco-dmo.org/id/dataset-parameter/897531.rdf Name: d136_129_Xe Units: per mil (‰) Description: <p>d136/129 Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897532.rdf Name: d136_129_err Units: per mil (‰) Description: <p>Standard error for d136_129_Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897533.rdf Name: d134_129_Xe Units: per mil (‰) Description: <p>d134/129 Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897534.rdf Name: d134_129_err Units: per mil (‰) Description: <p>Standard error for d134_129_Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897535.rdf Name: d132_129_Xe Units: per mil (‰) Description: <p>d132/129 Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897536.rdf Name: d132_129_err Units: per mil (‰) Description: <p>Standard error for d132_129_Xe</p> http://lod.bco-dmo.org/id/dataset-parameter/897537.rdf Name: WTD Units: meters (m) Description: <p>Water table depth</p> http://lod.bco-dmo.org/id/dataset-parameter/897538.rdf Name: WTD_err Units: meters (m) Description: <p>Standard error for WTD</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 5847 https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/05b750d5-5828-4e1c-828d-a6d9b98c0438/content download https://doi.org/10.26008/1912/bco-dmo.897484.1 download onLine dataset &lt;p&gt;Field campaigns to sample groundwater were conducted in Umatilla, Oregon, USA during September 2020 and in Tucson, Arizona, USA during November 2021. Water samples for dissolved noble gas isotope measurements were collected in 6-liter (L) pre-evacuated stainless steel flasks (Restek TO-can air sampling flasks sealed with a Swagelok SS-4H valve), leaving 1 L of headspace. The sample gases were equilibrated between the dissolved phase in the sample water and the gas phase in the headspace on an orbital shaker for at least 3 days at a constant known temperature. After the sample water was drained, the headspace gas was transferred and gettered to remove non-inert gases. The remaining gas sample was measured on a dynamic isotope ratio mass spectrometer (IRMS), and the measured isotope ratios were corrected using known solubilities (Seltzer et al., 2019) and the recorded equilibration temperature to obtain the original isotope ratios of the water sample (Ng et al., 2023). Umatilla samples were stored for a year at room temperature prior to sampling. Tucson samples were stored for 2 weeks at room temperature prior to sampling.&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;&lt;strong&gt;Data Processing:&lt;/strong&gt;&lt;br /&gt; Corrections were made to account for 1) partitioning of the sample gas between the dissolved phase and the headspace and 2) matrix effects (ME) which are known to affect the apparent isotopic ratio of a trace gas in a mixture of gases. We empirically determine ME by measuring air and air-equilibrated water (AEW) standards and employing an optimization routine, such that squared deviations between measured AEW isotope ratios and known solubility equilibrium values are minimized.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;BCO-DMO Processing:&lt;/strong&gt;&lt;br /&gt; - removed 'NaN' as a missing data identifier (missing data are blank/empty in the final csv file);&lt;br /&gt; - renamed fields to comply with BCO-DMO naming conventions;&lt;br /&gt; - converted the Sampling_date column&amp;nbsp;to YYYY-MM-DD format.&lt;/p&gt; 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 MAT-253 dual inlet dynamic mass spectrometer MAT-253 dual inlet dynamic mass spectrometer PI Supplied Instrument Name: MAT-253 dual inlet dynamic mass spectrometer PI Supplied Instrument Description:The gas sample was measured on a MAT-253 dual inlet dynamic mass spectrometer at the Scripps Institution of Oceanography. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/ MKS 122b-11993 100 Torr barotron MKS 122b-11993 100 Torr barotron PI Supplied Instrument Name: MKS 122b-11993 100 Torr barotron PI Supplied Instrument Description:The pressure of the purified noble gas sample was measured with an MKS 122b-11993 100 Torr barotron. Instrument Name: Pressure Sensor Instrument Short Name:Pressure Sensor Instrument Description: A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.