http://lod.bco-dmo.org/id/dataset/705567
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
2017-06-20
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Vertical profiles of N2 gas concentrations in excess of equilibrium values along with the isotopic composition of total N2, NO3- and NO2- from R/V New Horizon cruise NH1410 in the Eastern Tropical North Pacific from May to June 2014
2017-06-20
publication
2017-06-20
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-05-05
publication
https://doi.org/10.26008/1912/bco-dmo.705567.1
Mark A. Altabet
University of Massachusetts Dartmouth SMAST
principalInvestigator
Craig L. McNeil
University of Washington Applied Physics Laboratory
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: Altabet, M. A., McNeil, C. L. (2022) Vertical profiles of N2 gas concentrations in excess of equilibrium values along with the isotopic composition of total N2, NO3- and NO2- from R/V New Horizon cruise NH1410 in the Eastern Tropical North Pacific from May to June 2014. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2017-06-20 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.705567.1 [access date]
Vertical profiles from the Mexican OMZ of N2 gas concentrations in excess of equilibrium values along with the isotopic composition of total N2, NO3- and NO2- Dataset Description: <p>Vertical profiles from the Mexican OMZ of N2 gas concentrations in excess of equilibrium values along with the isotopic composition of total N2, NO3- and NO2-.</p> Methods and Sampling: <p>Sampling at sea was done using a standard SeaBird CTD/Rosette system.&nbsp;Hydrographic data was processed&nbsp;using&nbsp;SeaBird software and standard procedures. O2 was measured by an SBE43 sensor and final data were calibrated against Winkler O2 determinations</p>
<p>NO3- and NO2- concentrations were measured in the laboratory on frozen samples using a SmartChem autoanalyzer using standard chemical methods</p>
<p>N2 excess were determined from N2/Ar ratios measured using the procedures described by&nbsp;Charoenpong et al. (2014) with the exception that the measurements were made at sea using a Pfieffer 400 series quadrupole mass spectrometer system.&nbsp;Data acquisition and initial data processing used custom LabView software. Biogenic N2 concentrations were determined by subtraction of estimated background excess N2 as described in Chang et al. (2012). The d15N of N2 was determined in the laboratory using similar methodology but using an IsoPrime Isotope Ratio Mass Spectrometer (IRMS) as described by Charoenpong et al. (2014) using IonVantage software.&nbsp;</p>
<p>The isotopic composition of nitrate and nitrite was determined on samples returned to the laboratory using procedures described by McIlvin and Casciotti (2011) and McIlvin and Altabet (2005).&nbsp;Samples for nitrate isotope analysis were preserved by mild acidification and addition of sulfamic acid to remove nitrite.&nbsp;Nitrite samples were preserved at high pH with NaOH to retain its d18O signature.&nbsp;An IsoPrime IRMS running IonVantage was used to make these measurements.</p>
<p>Final data reduction and organization was done using Microsoft Excel.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1154741 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1154741
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1153295 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1153295
completed
Mark A. Altabet
University of Massachusetts Dartmouth SMAST
508-999-8622
706 S. Rodney French Blvd
New Bedford
MA
02067
USA
maltabet@umassd.edu
pointOfContact
Craig L. McNeil
University of Washington Applied Physics Laboratory
206-543-2157
Applied Physics Laboratory 1013 NE 40th Street
Seattle
WA
98105-6698
USA
cmcneil@uw.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise
ctd_num
date
btl_num
lat
lon
time_local
ISO_DateTime_Local
depth_ctd
pressure_ctd
in_situ_temp_ctd
salinity_ctd
calibrated_ctd_O2
sigma_theta
NO3
NO2
N2_excess
stdev_N2_excess
bio_N2
d15N2
stdev_d15N2_anomaly
d15NO3
d18O_NO3
d15NO2
d18O_NO2
SeaBird CTD/Rosette
SmartChem autoanalyzer
IsoPrime Isotope Ratio Mass Spectrometer (IRMS)
Pfieffer 400 series quadrupole mass spectrometer
SBE43 sensor
theme
None, User defined
Cruise identfier
cast
date
bottle number
latitude
longitude
time_local
ISO_DateTime_Local
depth
water pressure
water temperature at measurement depth
salinity
dissolved Oxygen
sigma-theta potential density
Nitrate
Nitrite
Nitrogen
d15N
d15N_NO3
d18O_NO3
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird
Discrete Analyzer
Isotope-ratio Mass Spectrometer
Mass Spectrometer
Sea-Bird SBE 43 Dissolved Oxygen Sensor
instrument
BCO-DMO Standard Instruments
NH1410
service
Deployment Activity
Eastern Tropical North Pacific (ETNP) oxygen minimum zone off Manzanillo, Mexico; sampling transects run southeast-northwest along the Colima coast (~19-24°N, 106-116°W) and northeast-southwest off the coast (~14-18°N, 106-115°W)
place
Locations
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: Autonomous Lagrangian Floats for Oxygen Minimum Zone Biogeochemistry
https://osprey.bco-dmo.org/project/700166
Collaborative Research: Autonomous Lagrangian Floats for Oxygen Minimum Zone Biogeochemistry
<p><em>NSF Award Abstract:</em><br />
Intense oxygen minimum zones (OMZ) of the world's oceans, though constituting a small fraction of total oceanic volume, host critical biogeochemical processes and are central to understanding the ocean's N cycle and its biogeochemical and isotopic signatures. OMZ's are sites for a large portion of marine combined N loss to N2 (25 to 50%) and dominate the ocean N isotope budget through cogeneration of 15N and 18O enriched NO3 -. Major outstanding issues include the magnitude of this N sink, the stoichiometry between NO3 - loss and the production of biogenic N2, the microbial pathways leading to N2 production, as well as the interaction between these OMZ processes and the surface export of organic matter as well as physical circulation.</p>
<p>The PI's request funding to develop a new, in situ, autonomous tool for studying N loss in OMZ's. It will allow observation of variability over a range in temporal and spatial scales that are critical for understanding controlling processes and better estimating the magnitude of N-loss. The sustained deployments possible with autonomous platforms will be critical for detecting any response of OMZ's to climate change.</p>
<p>Broader Impacts: Nitrogen is often the limiting nutrient for biological production in the oceans, and the current global marine nitrogen balance has been in much debate due to a number of uncertainties and questions. A successful development of this proposed sensor-float package may help in resolving some of the important questions on the spatial and temporal variabilities of the OMZs. In turn, such knowledge is essential in assessing the global nitrogen balance in the current and future oceans. This proposed project would involve active participation of undergraduates, graduates and postdocs, as well as the training of a K-12 science teacher. This project would also foster collaboration with international researchers. The PI's have partnered with Ocean Explorium at New Bedford Seaport to provide an educational outreach component designed to aid teacher development and create a field trip program for teachers in the south coast of Massachusetts. The proposal will support post-doc, graduate and undergraduate students.</p>
OMZ Biogeochemistry Floats
largerWorkCitation
project
eng; USA
oceans
Eastern Tropical North Pacific (ETNP) oxygen minimum zone off Manzanillo, Mexico; sampling transects run southeast-northwest along the Colima coast (~19-24°N, 106-116°W) and northeast-southwest off the coast (~14-18°N, 106-115°W)
-116.53
-104.2
18.19
25.2
2014-05-13
2014-06-07
0
BCO-DMO catalogue of parameters from Vertical profiles of N2 gas concentrations in excess of equilibrium values along with the isotopic composition of total N2, NO3- and NO2- from R/V New Horizon cruise NH1410 in the Eastern Tropical North Pacific from May to June 2014
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/705589.rdf
Name: cruise
Units: unitless
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/705590.rdf
Name: ctd_num
Units: unitless
Description: <p>CTD cast identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/705591.rdf
Name: date
Units: unitless
Description: <p>Date formatted as dd/mm/yyyy</p>
http://lod.bco-dmo.org/id/dataset-parameter/705592.rdf
Name: btl_num
Units: unitless
Description: <p>Niskin bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/705593.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/705594.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/705595.rdf
Name: time_local
Units: unitless
Description: <p>Local ship time formatted as HH:MM:SS</p>
http://lod.bco-dmo.org/id/dataset-parameter/705596.rdf
Name: ISO_DateTime_Local
Units: unitless
Description: <p>Date and time formatted to ISO 8601 standard: yyyy-mm-ddTHH:MM:SS</p>
http://lod.bco-dmo.org/id/dataset-parameter/705597.rdf
Name: depth_ctd
Units: meters
Description: <p>CTD depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/705598.rdf
Name: pressure_ctd
Units: decibars (dB)
Description: <p>CTD pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/705599.rdf
Name: in_situ_temp_ctd
Units: degrees Celsius
Description: <p>CTD in situ temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/705600.rdf
Name: salinity_ctd
Units: unitless
Description: <p>CTD salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/705601.rdf
Name: calibrated_ctd_O2
Units: micromoles per kilogram (umol/kg)
Description: <p>Winkler calibrated CTD oxygen</p>
http://lod.bco-dmo.org/id/dataset-parameter/705602.rdf
Name: sigma_theta
Units: kilograms per cubic meter - 1000 (kg/m3 - 1000)
Description: <p>Density anomaly</p>
http://lod.bco-dmo.org/id/dataset-parameter/705603.rdf
Name: NO3
Units: micromoles per kilogram (umol/kg)
Description: <p>Nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/705604.rdf
Name: NO2
Units: micromoles per kilogram (umol/kg)
Description: <p>Nitrite concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/705605.rdf
Name: N2_excess
Units: micromoles per kilogram (umol/kg)
Description: <p>N2 concentration in excess of equilibrium with atmosphere</p>
http://lod.bco-dmo.org/id/dataset-parameter/705606.rdf
Name: stdev_N2_excess
Units: micromoles per kilogram (umol/kg)
Description: <p>Precision of above</p>
http://lod.bco-dmo.org/id/dataset-parameter/705607.rdf
Name: bio_N2
Units: micromoles per kilogram (umol/kg)
Description: <p>biogenic N2 concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/705608.rdf
Name: d15N2
Units: per mil (‰)
Description: <p>Difference in d15N of total N2 relative to equilibrium values</p>
http://lod.bco-dmo.org/id/dataset-parameter/705609.rdf
Name: stdev_d15N2_anomaly
Units: per mil (‰)
Description: <p>Precision of above</p>
http://lod.bco-dmo.org/id/dataset-parameter/705610.rdf
Name: d15NO3
Units: per mil (‰)
Description: <p>d15N of nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/705611.rdf
Name: d18O_NO3
Units: per mil (‰)
Description: <p>d18O of nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/705612.rdf
Name: d15NO2
Units: per mil (‰)
Description: <p>d15N of nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/705613.rdf
Name: d18O_NO2
Units: per mil (‰)
Description: <p>d18O of nitrite</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
98863
https://darchive.mblwhoilibrary.org/bitstream/1912/28658/1/dataset-705567_n2-excess-and-n-species-isotopic-composition__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.705567.1
download
onLine
dataset
<p>Sampling at sea was done using a standard SeaBird CTD/Rosette system.&nbsp;Hydrographic data was processed&nbsp;using&nbsp;SeaBird software and standard procedures. O2 was measured by an SBE43 sensor and final data were calibrated against Winkler O2 determinations</p>
<p>NO3- and NO2- concentrations were measured in the laboratory on frozen samples using a SmartChem autoanalyzer using standard chemical methods</p>
<p>N2 excess were determined from N2/Ar ratios measured using the procedures described by&nbsp;Charoenpong et al. (2014) with the exception that the measurements were made at sea using a Pfieffer 400 series quadrupole mass spectrometer system.&nbsp;Data acquisition and initial data processing used custom LabView software. Biogenic N2 concentrations were determined by subtraction of estimated background excess N2 as described in Chang et al. (2012). The d15N of N2 was determined in the laboratory using similar methodology but using an IsoPrime Isotope Ratio Mass Spectrometer (IRMS) as described by Charoenpong et al. (2014) using IonVantage software.&nbsp;</p>
<p>The isotopic composition of nitrate and nitrite was determined on samples returned to the laboratory using procedures described by McIlvin and Casciotti (2011) and McIlvin and Altabet (2005).&nbsp;Samples for nitrate isotope analysis were preserved by mild acidification and addition of sulfamic acid to remove nitrite.&nbsp;Nitrite samples were preserved at high pH with NaOH to retain its d18O signature.&nbsp;An IsoPrime IRMS running IonVantage was used to make these measurements.</p>
<p>Final data reduction and organization was done using Microsoft Excel.</p>
Specified by the Principal Investigator(s)
<p>See above for data processing.</p>
<p>BCO-DMO processing:<br />
- modified parameter names to conform with BCO-DMO naming conventions (replaced # with "num", replaced hyphens with underscores);<br />
- re-formatted date to mm/dd/yyyy;<br />
- re-formatted time to HH:MM:SS;<br />
- added ISO date/time field using original date and time fields;<br />
- replaced "#N/A" and blanks (missing data) with "nd";<br />
- there were 12 rows where lon values were degrees and decimal mins (CTD 11F02; 107 53.218). Converted those to decimal degrees.</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
SeaBird CTD/Rosette
SeaBird CTD/Rosette
PI Supplied Instrument Name: SeaBird CTD/Rosette PI Supplied Instrument Description:Sampling at sea was done using a standard SeaBird CTD/Rosette system. Instrument Name: CTD Sea-Bird Instrument Short Name:CTD Sea-Bird Instrument Description: A Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics. This instrument designation is used when specific make and model are not known or when a more specific term is not available in the BCO-DMO vocabulary. Refer to the dataset-specific metadata for more information about the specific CTD used. More information from: http://www.seabird.com/ Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
SmartChem autoanalyzer
SmartChem autoanalyzer
PI Supplied Instrument Name: SmartChem autoanalyzer PI Supplied Instrument Description:NO3- and NO2- concentrations were measured in the laboratory on frozen samples using a SmartChem autoanalyzer using standard chemical methods Instrument Name: Discrete Analyzer Instrument Short Name:Discrete Analyzer Instrument Description: Discrete analyzers utilize discrete reaction wells to mix and develop the colorimetric reaction, allowing for a wide variety of assays to be performed from one sample. These instruments are ideal for drinking water, wastewater, soil testing, environmental and university or research applications where multiple assays and high throughput are required.
IsoPrime Isotope Ratio Mass Spectrometer (IRMS)
IsoPrime Isotope Ratio Mass Spectrometer (IRMS)
PI Supplied Instrument Name: IsoPrime Isotope Ratio Mass Spectrometer (IRMS) PI Supplied Instrument Description:The d15N of N2 was determined in the laboratory using an IsoPrime Isotope Ratio Mass Spectrometer (IRMS) as described by Charoenpong et al. (2014) using IonVantage software. An IsoPrime IRMS running IonVantage was also used to make measurements of the isotopic composition of nitrate and nitrite. 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/
Pfieffer 400 series quadrupole mass spectrometer
Pfieffer 400 series quadrupole mass spectrometer
PI Supplied Instrument Name: Pfieffer 400 series quadrupole mass spectrometer PI Supplied Instrument Description:N2 excess were determined from N2/Ar ratios measured using the procedures described by Charoenpong et al. (2014) with the exception that the measurements were made at sea using a Pfieffer 400 series quadrupole mass spectrometer system. 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/
SBE43 sensor
SBE43 sensor
PI Supplied Instrument Name: SBE43 sensor PI Supplied Instrument Description:O2 was measured by an SBE43 sensor and final data were calibrated against Winkler O2 determinations Instrument Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor Instrument Short Name:SBE-43 DO Instrument Description: The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/
Cruise: NH1410
NH1410
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel
NH1410
Frank James Stewart
Georgia Institute of Technology
http://dmoserv3.whoi.edu/data_docs/OMZ_SulfurCycling/Cruise_Report_NH1410.pdf
Report describing NH1410
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel