http://lod.bco-dmo.org/id/dataset/869963
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
2022-02-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Water column nitrate plus nitrite d15N measurements from seawater collected in November 2019 and November 2020 in the Western Tropical South Pacific
2023-04-03
publication
2023-04-03
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-03-04
publication
https://doi.org/10.26008/1912/bco-dmo.869963.1
Angela N. Knapp
Florida State University EOAS
principalInvestigator
Sophie Bonnet
Mediterranean Institute of Oceanography
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: Knapp, A. N., Forrer, H. J. (2023) Water column nitrate plus nitrite d15N measurements from seawater collected in November 2019 and November 2020 in the Western Tropical South Pacific. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2023-04-03 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.869963.2 [access date]
TONGA NO3 d15N Dataset Description: Methods and Sampling: <p><strong>Sampling and Analytical Procedures:</strong><br />
Duplicate water column samples were collected by Niskin or GoFlo rosette on one of the following types of casts:<br />
<br />
'CTD',<br />
'TMC' (Trace Metal Clean), or<br />
'TWO' (small classical CTD with 12 x Niskin bottles) cast.</p>
<p>Nitrogen isotopic analysis (d15N of NO3-+NO2-) was by the "denitrifier method" and followed the methods described by Sigman et al. (2001), Casciotti et al. (2002), McIlvin and Casciotti (2011), and Weigand et al. (2016).</p>
<p>Briefly, NO3-+NO2- was quantitatively reduced to N2O by <em>Pseudomonas aureofaciens</em>, which was then cryogenically focused and analyzed on an isotope ratio mass spectrometer. A volume of sample was added to each bacterial vial to achieve a final quantity of 10 or 20 nanomoles N2O, which was then purged from the vial using a helium carrier gas. The d15N of N2O in samples was calibrated with international isotopic reference materials.</p>
<p><strong>Calibration:</strong><br />
NO3-+NO2- d15N analyses were calibrated with IAEA N3 and USGS 34 NO3- d15N isotopic reference materials as described in McIlvin and Casciotti, 2011.</p>
<p><strong>Precision:</strong><br />
The average precision of NO3-+NO2- d15N measurements was <u>&lt;</u>0.2 per mil.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829797 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829797
completed
Angela N. Knapp
Florida State University EOAS
(979) 862-5235
797 Lamar St. Dept of Oceanography, Eller O&M Room 1204
College Station
TX
77843
USA
aknapp@tamu.edu
pointOfContact
Sophie Bonnet
Mediterranean Institute of Oceanography
+687 26.07.46
Mediterranean Institute of Oceanography (MIO) Luminy Campus
13009 Marseille
CEDEX 09
France
sophie.bonnet@mio.osupytheas.fr
pointOfContact
asNeeded
Dataset Version: 2
Unknown
CruiseID
ISO_DateTime_UTC
Latitude
Longitude
Cast
PotentialDensity
Depth
NO3_NO2_d15N
CTD
GoFlo rosette
Thermo Finnigan Delta V isotope ratio mass spectrometer
Niskin
Trace Metal Clean (TMC) bottle
theme
None, User defined
cruise name
ISO_DateTime_UTC
latitude
longitude
cast
density
depth
delta 15N NO3+NO2
featureType
BCO-DMO Standard Parameters
CTD - profiler
GO-FLO Bottle
Isotope-ratio Mass Spectrometer
Niskin bottle
Trace Metal Bottle
instrument
BCO-DMO Standard Instruments
TONGA2019
TONGA RECUP
service
Deployment Activity
Western Tropical South Pacific (WTSP)
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: Dissolved organic phosphorus controls on marine nitrogen fixation and export production
https://osprey.bco-dmo.org/project/820043
Collaborative Research: Dissolved organic phosphorus controls on marine nitrogen fixation and export production
<p>This study was global in nature, but included significant numbers of analyses from: GO-SHIP cruises (P06-2017, P18-2016, I08S-2016, I09N-2016); Eastern Tropical South Pacific; Atlantic, Pacific, and Indian Ocean sectors of the Southern Ocean; Gulf of Alaska; and the western Pacific.</p>
<p><em>NSF Award Abstract:</em><br />
Phytoplankton play an important role in the Earth's elemental cycles of carbon and nitrogen. In addition to sunlight, phytoplankton living in the surface waters of the oceans require the elements nitrogen and phosphorus for growth. Much of these nutrients are supplied in their inorganic forms from mixing of deep waters towards the surface during the winter months when vertical stability of the water column breaks down. However much of the low latitude oceans, 45degS45degN, suffer from limited nutrient input to sunlit surface waters due to strong thermal stratification (vertical stability) of the upper water column. As a consequence, tropical and subtropical phytoplankton have devised alternative ways of acquiring nitrogen and phosphorus. Marine nitrogen fixation is a process by which specialized microbes utilize the abundant nitrogen gas from the atmosphere to convert elemental nitrogen into the bioavailable form ammonia. These nitrogen fixing phytoplankton and many others also use organic forms of phosphorus in the low latitude ocean where inorganic nutrients are often scarce. This project will significantly increase the number of dissolved organic nitrogen and dissolved organic phosphorus concentration measurements, especially from the currently under-sampled Pacific and Indian Oceans. Changes in the concentration of organic nutrients across the surface ocean will be used to infer rates of organic nutrient use by phytoplankton in numerical models. Specifically, the role for the biological uptake of dissolved organic phosphorus to stimulate the processes of marine nitrogen fixation and photosynthesis in the low latitude ocean will be quantified from the combined data and model output. The project will train one graduate student and several undergraduate students in both laboratory chemical analysis techniques and numerical simulation of ocean biological and chemical processes. New scientific knowledge will be shared with the public via a social media campaign and will inform the development of the next generation of global climate models.</p>
<p>The marine biogeochemical modeling community has identified the lack of dissolved organic nitrogen (DON) and especially dissolved organic phosphorus (DOP) concentration measurements from the upper 300 m of the global ocean as crucial gaps in our ability to accurately model export production and N2 fixation rates in the subtropics. The proposed work will significantly increase global data coverage of marine DON and DOP concentration measurements, in particular from under-sampled ocean regions in the Indian Ocean, western, central, and eastern tropical South Pacific, Gulf of Alaska, eastern subtropical and subpolar South Pacific, Southern Ocean, subtropical North Atlantic, and tropical South Atlantic Ocean basins. These new measurements will be assimilated in state-of-the-art biogeochemical models to constrain the relative cycling rates of DOP and DON and to quantify the role of preferential DOP consumption as a P source supporting export production and N2 fixation in the low latitude ocean. Model output will solve for the regionally-resolved fraction of new production that accumulates as DON and DOP, autotrophic DOP uptake rates, as well as the remineralization rates for DON and DOP. The model output will also include the first regionally variable rate estimates of euphotic zone DOP consumption sustaining export production and N2 fixation to be constrained by observations from the Pacific and Indian Oceans. Thus, the new concentration measurements and diagnostic modeling will allow us to evaluate the quantitative role for regional variability in DOP consumption and recycling that supports export production and N2 fixation in the low latitude ocean.</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>
DOP N2 fixation and export production
largerWorkCitation
project
eng; USA
oceans
Western Tropical South Pacific (WTSP)
175.81
-179.52
-21.16
-19.43
2019-11-05
2020-11-04
Global scope (see Description box for details)
0
BCO-DMO catalogue of parameters from Water column nitrate plus nitrite d15N measurements from seawater collected in November 2019 and November 2020 in the Western Tropical South Pacific
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/893142.rdf
Name: CruiseID
Units: unitless
Description: <p>Cruise name</p>
http://lod.bco-dmo.org/id/dataset-parameter/893143.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) of sampling in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/893144.rdf
Name: Latitude
Units: degrees North
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/893145.rdf
Name: Longitude
Units: degrees East
Description: <p>Longitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/893146.rdf
Name: Cast
Units: unitless
Description: <p>Cast number and type (CTD=standard CTD, TMC=Trace Metal Clean, TWO=small classical CTD with 12 Niskin)</p>
http://lod.bco-dmo.org/id/dataset-parameter/893147.rdf
Name: PotentialDensity
Units: kilograms per cubic meter (kg/m^3)
Description: <p>Density of water parcel at the surface</p>
http://lod.bco-dmo.org/id/dataset-parameter/893148.rdf
Name: Depth
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/893149.rdf
Name: NO3_NO2_d15N
Units: per mil vs. N2 in air
Description: <p>Nitrogen isotopic composition of nitrate plus nitrite with respect to nitrogen in air (NO3- + NO2- d15N vs. N2 in air)</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
13021
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/a6b021fa-9bb4-4991-b6f2-4535ce3d8f30/content
download
11292
https://darchive.mblwhoilibrary.org/bitstream/1912/28069/1/dataset-869963_tonga-2019-no3-d15n__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.869963.1
download
onLine
dataset
<p><strong>Sampling and Analytical Procedures:</strong><br />
Duplicate water column samples were collected by Niskin or GoFlo rosette on one of the following types of casts:<br />
<br />
'CTD',<br />
'TMC' (Trace Metal Clean), or<br />
'TWO' (small classical CTD with 12 x Niskin bottles) cast.</p>
<p>Nitrogen isotopic analysis (d15N of NO3-+NO2-) was by the "denitrifier method" and followed the methods described by Sigman et al. (2001), Casciotti et al. (2002), McIlvin and Casciotti (2011), and Weigand et al. (2016).</p>
<p>Briefly, NO3-+NO2- was quantitatively reduced to N2O by <em>Pseudomonas aureofaciens</em>, which was then cryogenically focused and analyzed on an isotope ratio mass spectrometer. A volume of sample was added to each bacterial vial to achieve a final quantity of 10 or 20 nanomoles N2O, which was then purged from the vial using a helium carrier gas. The d15N of N2O in samples was calibrated with international isotopic reference materials.</p>
<p><strong>Calibration:</strong><br />
NO3-+NO2- d15N analyses were calibrated with IAEA N3 and USGS 34 NO3- d15N isotopic reference materials as described in McIlvin and Casciotti, 2011.</p>
<p><strong>Precision:</strong><br />
The average precision of NO3-+NO2- d15N measurements was <u>&lt;</u>0.2 per mil.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing:<br />
Version 1:</strong><br />
- Added a column for Vessel<br />
- Combined date and time columns to format of yyyy-mm-dd hh:mm:ss<br />
- Modified parameter (column) names to conform with BCO-DMO naming conventions. The only allowed characters are A-Z,a-z,0-9, and underscores. No spaces, hyphens, commas, parentheses, or Greek letters.</p>
<p><strong>Version 2:</strong><br />
- Created ISO 8601 date-time field;<br />
- Renamed fields to comply with BCO-DMO naming conventions.</p>
<p><strong>Version History:</strong><br />
- version 1 (date 2022-02-24) - contains only data from 2019 cruise.<br />
- version 2 (date 2023-04-03) - contains data from 2019 and 2020 cruises.</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
CTD
CTD
PI Supplied Instrument Name: CTD PI Supplied Instrument Description:water column samples were collected on a CTD cast Instrument Name: CTD - profiler Instrument Short Name: Instrument Description: The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.
This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
GoFlo rosette
GoFlo rosette
PI Supplied Instrument Name: GoFlo rosette PI Supplied Instrument Description:water column samples were collected by Niskin or GoFlo rosette Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Thermo Finnigan Delta V isotope ratio mass spectrometer
Thermo Finnigan Delta V isotope ratio mass spectrometer
PI Supplied Instrument Name: Thermo Finnigan Delta V isotope ratio mass spectrometer PI Supplied Instrument Description:NO3-+NO2- d15N was measured using a Thermo Finnigan Delta V isotope ratio mass spectrometer 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/
Niskin
Niskin
PI Supplied Instrument Name: Niskin PI Supplied Instrument Description:water column samples were collected by Niskin 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/
Trace Metal Clean (TMC) bottle
Trace Metal Clean (TMC) bottle
PI Supplied Instrument Name: Trace Metal Clean (TMC) bottle PI Supplied Instrument Description:water column samples were collected on a TMC (Trace Metal Clean) cast Instrument Name: Trace Metal Bottle Instrument Short Name:TM Bottle Instrument Description: Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Cruise: TONGA2019
TONGA2019
R/V L'Atalante
Community Standard Description
International Council for the Exploration of the Sea
R/V L'Atalante
vessel
TONGA2019
Sophie Bonnet
Mediterranean Institute of Oceanography
https://campagnes.flotteoceanographique.fr/campagnes/18000884/
Report describing TONGA2019
Cruise: TONGA RECUP
TONGA RECUP
Community Standard Description
International Council for the Exploration of the Sea
R/V Alis
vessel
TONGA RECUP
Cecile Guieu
Laboratoire d'Oceanographie de Villefranche
https://campagnes.flotteoceanographique.fr/campagnes/18001357/
Report describing TONGA RECUP
R/V L'Atalante
Community Standard Description
International Council for the Exploration of the Sea
R/V L'Atalante
vessel
Community Standard Description
International Council for the Exploration of the Sea
R/V Alis
vessel