http://lod.bco-dmo.org/id/dataset/630246
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
2015-12-28
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Nitrate dual isotope (d15N and d18O) measurements from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG project)
2015-12-28
publication
2015-12-28
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-03-31
publication
https://doi.org/10.26008/1912/bco-dmo.630246.1
Karen L. Casciotti
Stanford University
principalInvestigator
Caitlin Frame
University of Basel (Universitat Basel)
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: Casciotti, K., Frame, C. (2020) Nitrate dual isotope (d15N and d18O) measurements from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2015-12-28 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.630246.1 [access date]
Nitrate dual isotope (d15N and d18O) measurements. Dataset Description: <p>Nitrate dual isotope (d15N and d18O) measurements made from samples from acid-cleaned, Teflon-coated X-Niskin sampling bottles on the CoFeMUG cruise (KN192-05).</p> Methods and Sampling: <p>Single water samples for nitrate isotopic analyses were collected from acid-cleaned, Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) of 8-liter capacity deployed on an epoxy-coated rosette (Sea-Bird Electronics) rosette as described in Noble et al. (2012). Samples were collected into triple-rinsed 60 mL HDPE bottles and stored frozen at -20 degrees C until analysis. Isotopic analyses of NO3 were made with a Finnigan DELTA PLUS XP IRMS using the denitrifier method (Sigman et al., 2001; Casciotti et al., 2002; McIlvin and Casciotti, 2011). Both d15N-NO3 and d18O-NO3 analyses were made in duplicate and data are reported as means +/- 1 standard deviation.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0452883 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0452883
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1031271 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1031271
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928414 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0928414
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0752291 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0752291
completed
Karen L. Casciotti
Stanford University
650-721-5545
Department of Environmental Earth System Science 473 Via Ortega, Y2E2 Building, Room 140
Stanford
CA
94305
USA
kcasciotti@stanford.edu
pointOfContact
Caitlin Frame
University of Basel (Universitat Basel)
+41 (0)61 267 04 82
Bernoullistrasse 30 Basel 4056
Switzerland
cframe@post.harvard.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise_id
sta
lat
lon
lon_360
press
ev_code
event
d15N_NO3
d15N_NO3_stdev
d18O_NO3
d18O_NO3_stdev
Finnigan DELTA PLUS XP IRMS
Teflon-coated X-Niskin sampling bottles (OceanTest Equipment)
theme
None, User defined
Cruise identfier
station number
latitude
longitude
longitude from 0 to 360 degrees
water pressure
event code
event
d15N_NO3
standard deviation
d18O_NO3
featureType
BCO-DMO Standard Parameters
Isotope-ratio Mass Spectrometer
Trace Metal Bottle
instrument
BCO-DMO Standard Instruments
KN192-05
service
Deployment Activity
South Atlantic subtropical gyre and Benguela upwelling region
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.
Ocean Carbon and Biogeochemistry
http://us-ocb.org/
Ocean Carbon and Biogeochemistry
The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.
The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.
The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.
The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.
OCB
largerWorkCitation
program
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
Cobalt, Iron and Micro-organisms from the Upwelling zone to the Gyre (GAc01)
https://osprey.bco-dmo.org/project/2067
Cobalt, Iron and Micro-organisms from the Upwelling zone to the Gyre (GAc01)
<p>The geochemistries of dissolved cobalt (Co) and iron (Fe) in the oceanic water column share several characteristics such as extremely low concentrations, redox chemistry, low solubility,and utilization as micronutrients by marine microbes. Iron has been the subject of considerable research focus in recent years due to its role in limiting phytoplankton productivity in oceanic and coastal upwelling environments. Cobalt has been much less studied, but recent data show it may be important in influencing primary productivity or phytoplankton community composition in certain geographical areas.</p>
<p>The CoFeMUG project predated GEOTRACES, so while it is not formally recognized as a GEOTRACES section, it is considered a GEOTRACES-related project and the CoFeMUG data are GEOTRACES compliant.</p>
<p>State-of-the-art geochemical and molecular biological techniques were used to address biogeochemical questions in the South Atlantic, and focus especially on the two trace metals, cobalt and iron. The 27-day cruise in November and December 2007 to the South Atlantic was designed to study cobalt and iron biogeochemistry and focus on four major hypotheses.</p>
<p>(1) Large fluxes of labile cobalt are associated with upwelling systems even in Aeolian dominated environments.<br />
(2) Cobalt and phosphate show correlations in (and only in) surface waters due to micronutrient utilization and rapid remineralization. The slope of the correlation is dependent on the chemical speciation of cobalt.<br />
(3) The absence of Trichodesmium populations in the subtropical and tropical South Atlantic is caused by iron limitation.<br />
(4) Based on work from the California and Peru Upwelling regimes, primary productivity in the Benguela upwelling regime off of South West Africa may be iron limited or iron-cobalt colimited.</p>
<p>A combination of geochemical and biological/molecular analyses were made across an oligotrophic-upwelling transition to examine how changing metal regimes affect the physiology and growth of the important primary producers Trichodesmium and Synechococcus.</p>
<p>CoFeMUG project results are published in:<br />
Noble, Abigail E., Carl H. Lamborg, Dan C. Ohnemus, Phoebe J. Lam, Tyler J. Goepfert, Chris I. Measures, Caitlin H. Frame, Karen L. Casciotti, Giacomo R. DiTullio, Joe Jennings, and Mak A. Saito (2012) Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean. Limnology & Oceanography. Vol. 57(4), July 2012. pgs 989-1010. doi:10.4319/lo.2012.57.4.0989 (<a href="http://www.aslo.org/lo/toc/vol_57/issue_4/0989.pdf">www.aslo.org/lo/toc/vol_57/issue_4/0989.pdf</a>)</p>
CoFeMUG
largerWorkCitation
project
eng; USA
oceans
South Atlantic subtropical gyre and Benguela upwelling region
-30
12.2
-17.5
-11
2007-11-16
2007-12-13
South Atlantic subtropical gyre and Benguela upwelling region
0
BCO-DMO catalogue of parameters from Nitrate dual isotope (d15N and d18O) measurements from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG 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
http://lod.bco-dmo.org/id/dataset-parameter/630259.rdf
Name: cruise_id
Units: dimensionless
Description: <p>Official cruise identifier.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630260.rdf
Name: sta
Units: dimensionless
Description: <p>Station number.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630261.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude; North is positive.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630262.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude; East is positive. Calculated by BCO-DMO from the original PI-provided lon_360 values.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630263.rdf
Name: lon_360
Units: decimal degrees
Description: <p>Longitude measured from 0 to 360 degrees.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630264.rdf
Name: press
Units: decibars (db)
Description: <p>Pressure.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630265.rdf
Name: ev_code
Units: dimensionless
Description: <p>Event code; type and number of sampling event; matches cruise event log.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630266.rdf
Name: event
Units: dimensionless
Description: <p>Event number from the cruise event log.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630267.rdf
Name: d15N_NO3
Units: per mil (‰)
Description: <p>d15N-NO3 = ([15N]/[14N]NO3 / [15N]/[14N]standard -1) x 1000‰; referenced to atmospheric N2.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630268.rdf
Name: d15N_NO3_stdev
Units: per mil (‰)
Description: <p>Standard deviation (in per mil units) of replicate d15N-NO3 analyses.</p>
http://lod.bco-dmo.org/id/dataset-parameter/630269.rdf
Name: d18O_NO3
Units: per mil (‰)
Description: <p>d18O-NO3 = ([18O]/[16O]NO3 / [18O]/[16O]standard -1) x 1000‰; referenced to VSMOW</p>
http://lod.bco-dmo.org/id/dataset-parameter/630270.rdf
Name: d18O_NO3_stdev
Units: per mil (‰)
Description: <p>Standard deviation (in per mil units) of replicate d18O-NO3 analyses.</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
21756
https://darchive.mblwhoilibrary.org/bitstream/1912/25599/1/dataset-630246_nitrate-isotopes__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.630246.1
download
onLine
dataset
<p>Single water samples for nitrate isotopic analyses were collected from acid-cleaned, Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) of 8-liter capacity deployed on an epoxy-coated rosette (Sea-Bird Electronics) rosette as described in Noble et al. (2012). Samples were collected into triple-rinsed 60 mL HDPE bottles and stored frozen at -20 degrees C until analysis. Isotopic analyses of NO3 were made with a Finnigan DELTA PLUS XP IRMS using the denitrifier method (Sigman et al., 2001; Casciotti et al., 2002; McIlvin and Casciotti, 2011). Both d15N-NO3 and d18O-NO3 analyses were made in duplicate and data are reported as means +/- 1 standard deviation.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
Samples were calibrated on the atmospheric N2 (d15N) and VSMOW (d18O) reference scales using nitrate isotope reference materials USGS-32, USGS-34, and USGS-35 (Bohlke et al., 2003), analyzed in replicate with each batch of samples (McIlvin and Casciotti, 2011).</p>
<p><strong>BCO-DMO Processing Notes:</strong><br />
- Modified original parameter names to conform with BCO-DMO naming conventions;<br />
- Missing values (blank) were replaced with 'nd' to indicate 'no data';<br />
- Calculated lon from original lon_360 field;<br />
- 28 Feb 2018: removed emargo on dataset.</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
Finnigan DELTA PLUS XP IRMS
Finnigan DELTA PLUS XP IRMS
PI Supplied Instrument Name: Finnigan DELTA PLUS XP IRMS PI Supplied Instrument Description:Isotopic analyses of NO3 were made with a Finnigan DELTA PLUS XP IRMS using the denitrifier method. 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/
Teflon-coated X-Niskin sampling bottles (OceanTest Equipment)
Teflon-coated X-Niskin sampling bottles (OceanTest Equipment)
PI Supplied Instrument Name: Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) PI Supplied Instrument Description:Single water samples for nitrate isotopic analyses were collected from acid-cleaned, Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) of 8-liter capacity deployed on an epoxy-coated rosette (Sea-Bird Electronics) rosette. 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: KN192-05
KN192-05
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN192-05
Mak A. Saito
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/CoFeMUG/CruiseReport_KN192-5.pdf
Report describing KN192-05
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel