http://lod.bco-dmo.org/id/dataset/3958
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
2013-06-05
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Nitrate (d15N and d18O) and nitrite (d15N) isotopic data, and corresponding hydrographic data from R/V Knorr cruise KN182-09 in the Peruvian Oxygen Deficient Zone in 2005 (N2O Cycling project)
2013-06-05
publication
2013-06-05
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-11-06
publication
https://doi.org/10.1575/1912/bco-dmo.3958.1
Karen L. Casciotti
Woods Hole Oceanographic Institution
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. (2013) Nitrate (d15N and d18O) and nitrite (d15N) isotopic data, and corresponding hydrographic data from R/V Knorr cruise KN182-09 in the Peruvian Oxygen Deficient Zone in 2005 (N2O Cycling project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2013-06-05 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.3958.1 [access date]
Nitrate (d15N and d18O) and nitrite (d15N) isotopic data, and corresponding hydrographic data. Dataset Description: <p>Nitrogen and oxygen isotopic data from a 2005 cruise on R/V Knorr (KN182-09) in the Peruvian Oxygen Deficient Zone.</p> Methods and Sampling: <p><strong>Sampling and Analytical Methodology:</strong><br />
Samples were collected from Niskin bottles, syringe filtered through 0.2 um pore-size capsule filters and frozen immediately in 60 mL HDPE bottles. Samples were stored frozen until analysis. Nitrate and nitrite concentrations were measured on separate aliquots by auto analyzer at the WHOI nutrient facility.</p>
<p>Samples were initially analyzed for nitrate +&nbsp; nitrite d15N and d18O using the denitrifier method (Sigman et al., 2001; Casciotti et al., 2002), then nitrite d15N and d18O were subtracted out according to Casciotti and McIlvin (2007). Later, the samples were reanalyzed for nitrate d15N and d18O using the denitrifier method after treatment with sulfamic acid using the method of Granger and Sigman (2009). These latter analyses, which we believe to be more accurate and precise, are reported here. Samples were analyzed in duplicate and are reported as the mean and standard deviation of replicate measurements. Typical precision for these analyses is 0.2-0.3 for d15N and 0.3-0.5 for d18O.</p>
<p>Samples were analyzed for nitrite d15N and d18O using the azide method (McIlvin and Altabet, 2005). Nitrite d18O data are not reported because it was determined that samples may have undergone O atom equilibration with water during storage (Casciotti et al., 2007). Typical precision for these analyses is 0.3-0.5 for d15N and 0.3-0.5 for d18O.<br />
<br />
All isotopic measurements were conducted on a Thermo Finnigan Delta PLUS XP isotope ratio mass spectrometer.</p>
Funding provided by WHOI Access to the Sea Fund (Access to the Sea; A2Sea) Award Number: Access to the Sea: Nitrous Oxide Cycle (Casciotti)
completed
Karen L. Casciotti
Woods Hole Oceanographic Institution
650-721-5545
Department of Environmental Earth System Science 473 Via Ortega, Y2E2 Building, Room 140
Stanford
CA
94305
USA
kcasciotti@stanford.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise_id
station
lat
lon
lon_360
press
depth
sal
temp
density_in_situ
O2
AOU_umol_kg
AOU_umol_L
NO3_preformed
NO3_expected
DIN_deficit
NO3_deficit
PO4
NO3
NO2
NO2_NO3
d15N_NO3
d15N_NO3_sd
d18O_NO3
d18O_NO3_sd
d15N_NO2
d15N_NO2_sd
D15_18
D15_18_sd
Dd15N
Dd15N_sd
sigma_0
Isotope-ratio Mass Spectrometer
Niskin bottle
Nutrient Autoanalyzer
theme
None, User defined
Cruise identfier
station
latitude
longitude
longitude from 0 to 360 degrees
water pressure
depth
salinity
water temperature at measurement depth
No BCO-DMO term
dissolved Oxygen
Nitrate
reactive phosphorus (PO4)
Nitrite
nitrate plus nitrite
standard deviation
sigma-theta
featureType
BCO-DMO Standard Parameters
Isotope-ratio Mass Spectrometer
Niskin bottle
Nutrient Autoanalyzer
instrument
BCO-DMO Standard Instruments
KN182-09
service
Deployment Activity
Peruvian Oxygen Deficient Zone
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.
Biogeochemistry of nitrous oxide cycling in the eastern tropical South Pacific
https://osprey.bco-dmo.org/project/2271
Biogeochemistry of nitrous oxide cycling in the eastern tropical South Pacific
<p>The eastern tropical South Pacific (ETSP) is a hot spot for oceanic nitrogen cycling. This region of upwelling and high productivity fuels high rates of oxygen consumption below the mixed layer, nitrate regeneration from nitrification, and ultimately denitrification of nitrate to N2 gas. The climatically important trace gas nitrous oxide (N2O) also reaches extreme high concentrations in the oxycline and extreme low concentrations in the heart of the oxygen minimum zone (OMZ), indicating active cycling in this region. Despite many years of investigation, the mechanism of N2O production in this hot spot is ambiguous because of the potential overlap or coupling of nitrification and denitrification processes at low oxygen tensions.</p>
<p>The investigators employed novel stable isotopic techniques to identify processes involved with nitrous oxide production and consumption in the water column at multiple sites within the eastern tropical South Pacific. They also sought to map the natural distributions of nitrate, nitrite and nitrous oxide concentrations and isotopes at high spatial resolution in order to develop a dataset with which to constrain ocean models based on their rate measurements.</p>
<p>Incubation experiments were carried out at sea to quantify the rates of nitrification and N2O cycling in samples throughout the oxygen minimum zone. In addition, approximately 1000 samples were collected for nitrate and nitrite isotopic analysis and 500 samples for N2O isotopic analysis. The investigators worked closely with other researchers onboard to work towards developing the most coherent picture of nitrogen cycling in the eastern tropical Pacific to date.</p>
N2O Cycling
largerWorkCitation
project
eng; USA
oceans
Peruvian Oxygen Deficient Zone
-79.3
-75.07
-17.67
-11
2005-10-18
2005-11-10
Peruvian Oxygen Deficient Zone
0
BCO-DMO catalogue of parameters from Nitrate (d15N and d18O) and nitrite (d15N) isotopic data, and corresponding hydrographic data from R/V Knorr cruise KN182-09 in the Peruvian Oxygen Deficient Zone in 2005 (N2O Cycling 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/35078.rdf
Name: cruise_id
Units: text
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/35079.rdf
Name: station
Units: integer
Description: <p>Station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/35080.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude. Positive values = North.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35081.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude. Negative values = West.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35082.rdf
Name: lon_360
Units: decimal degrees
Description: <p>Longitude east (0 to 360 degrees).</p>
http://lod.bco-dmo.org/id/dataset-parameter/35083.rdf
Name: press
Units: decibars
Description: <p>Pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/35084.rdf
Name: depth
Units: meters
Description: <p>Depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/35085.rdf
Name: sal
Units: PSU
Description: <p>Practical salinity.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35086.rdf
Name: temp
Units: degrees C
Description: <p>Temperature (Celsius)</p>
http://lod.bco-dmo.org/id/dataset-parameter/35087.rdf
Name: density_in_situ
Units: kg/L
Description: <p>In-situ density in kilograms per liter.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35088.rdf
Name: O2
Units: umol/kg
Description: <p>Oxygen in micromoles per kilogram.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35089.rdf
Name: AOU_umol_kg
Units: umol/kg
Description: <p>Apparent oxygen utilization (AOU). Equal to O2saturation - O2measured; where O2 saturation was calculated according to Garcia and Gordon (1992).</p>
http://lod.bco-dmo.org/id/dataset-parameter/35090.rdf
Name: AOU_umol_L
Units: umol/L
Description: <p>Apparent oxygen utilization (AOU). Equal to AOU_umol_kg x density_in_situ.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35091.rdf
Name: NO3_preformed
Units: umol/L
Description: <p>Preformed NO3 in micromoles per liter.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35092.rdf
Name: NO3_expected
Units: umol/L
Description: <p>Expected NO3 in micromoles per liter.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35093.rdf
Name: DIN_deficit
Units: umol/L
Description: <p>DIN defecit = NO3_expected - NO3 - NO2</p>
http://lod.bco-dmo.org/id/dataset-parameter/35094.rdf
Name: NO3_deficit
Units: umol/L
Description: <p>NO3 defecit = NO3_expected - NO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/35095.rdf
Name: PO4
Units: umol/L
Description: <p>PO4</p>
http://lod.bco-dmo.org/id/dataset-parameter/35096.rdf
Name: NO3
Units: umol/L
Description: <p>NO3-</p>
http://lod.bco-dmo.org/id/dataset-parameter/35097.rdf
Name: NO2
Units: umol/L
Description: <p>NO2-</p>
http://lod.bco-dmo.org/id/dataset-parameter/35098.rdf
Name: NO2_NO3
Units: umol/L
Description: <p>NO2- + NO3-</p>
http://lod.bco-dmo.org/id/dataset-parameter/35099.rdf
Name: d15N_NO3
Units: permil
Description: <p>delta15N-NO3 (permil vs. N2) = ((15N/14N NO3) / (15N/14N atmospheric N2) -1) *1000</p>
http://lod.bco-dmo.org/id/dataset-parameter/35100.rdf
Name: d15N_NO3_sd
Units: permil
Description: <p>Standard deviation of replicate d15N-NO3 measurements.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35101.rdf
Name: d18O_NO3
Units: permil
Description: <p>delta18O-NO3 (permil vs. VSMOW) = ((18O/16O NO3) / (18O/16O VSMOW) -1) *1000</p>
http://lod.bco-dmo.org/id/dataset-parameter/35102.rdf
Name: d18O_NO3_sd
Units: permil
Description: <p>Standard deviation of replicate d18O-NO3 measurements.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35103.rdf
Name: d15N_NO2
Units: permil
Description: <p>delta15N-NO2 (permil vs. N2) = ((15N/14N NO2) / (15N/14N atmospheric N2) -1) *1000</p>
http://lod.bco-dmo.org/id/dataset-parameter/35104.rdf
Name: d15N_NO2_sd
Units: permil
Description: <p>Standard deviation of replicate d15N-NO2 measurements.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35105.rdf
Name: D15_18
Units: permil
Description: <p>D(15,18) = (d15N-NO3 - 5.5 permil) - (d18O-NO3 - 2.5 permil)</p>
http://lod.bco-dmo.org/id/dataset-parameter/35106.rdf
Name: D15_18_sd
Units: permil
Description: <p>Standard deviation of D(15,18) calculated from propagated error of replicate d15N-NO3 and d18O-NO3 measurements.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35107.rdf
Name: Dd15N
Units: permil
Description: <p>Dd15N (permil) = d15N-NO3 minus d15N-NO2</p>
http://lod.bco-dmo.org/id/dataset-parameter/35108.rdf
Name: Dd15N_sd
Units: permil
Description: <p>Standard deviation of Dd15N calculated from propagated error of replicate d15N-NO3 and d15N-NO2 measurements.</p>
http://lod.bco-dmo.org/id/dataset-parameter/781017.rdf
Name: sigma_0
Units: kilograms per cubic meter (kg/m3)
Description: <p>sigma theta density</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
42726
https://darchive.mblwhoilibrary.org/bitstream/1912/24789/1/dataset-3958_n-and-o-isotopes__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.3958.1
download
onLine
dataset
<p><strong>Sampling and Analytical Methodology:</strong><br />
Samples were collected from Niskin bottles, syringe filtered through 0.2 um pore-size capsule filters and frozen immediately in 60 mL HDPE bottles. Samples were stored frozen until analysis. Nitrate and nitrite concentrations were measured on separate aliquots by auto analyzer at the WHOI nutrient facility.</p>
<p>Samples were initially analyzed for nitrate +&nbsp; nitrite d15N and d18O using the denitrifier method (Sigman et al., 2001; Casciotti et al., 2002), then nitrite d15N and d18O were subtracted out according to Casciotti and McIlvin (2007). Later, the samples were reanalyzed for nitrate d15N and d18O using the denitrifier method after treatment with sulfamic acid using the method of Granger and Sigman (2009). These latter analyses, which we believe to be more accurate and precise, are reported here. Samples were analyzed in duplicate and are reported as the mean and standard deviation of replicate measurements. Typical precision for these analyses is 0.2-0.3 for d15N and 0.3-0.5 for d18O.</p>
<p>Samples were analyzed for nitrite d15N and d18O using the azide method (McIlvin and Altabet, 2005). Nitrite d18O data are not reported because it was determined that samples may have undergone O atom equilibration with water during storage (Casciotti et al., 2007). Typical precision for these analyses is 0.3-0.5 for d15N and 0.3-0.5 for d18O.<br />
<br />
All isotopic measurements were conducted on a Thermo Finnigan Delta PLUS XP isotope ratio mass spectrometer.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing: </strong><br />
Nitrate d15N and d18O analyses were calibrated against aliquots of the nitrate isotope standards USGS32, USGS34, and USGS35 (Bohlke et al., 2003) prepared and analyzed in parallel with each batch of samples, according to McIlvin and Casciotti (2011).<br />
<br />
Nitrite d15N analyses were calibrated against aliquots of the nitrite isotope standards RSIL-N23, RSIL-N7373, and RSIL-N10219 (Casciotti et al., 2007) prepared and analyzed in parallel with each batch of samples.</p>
<p>BCO-DMO Processing Notes: modified original parameter names to conform with BCO-DMO naming conventions; replaced blank/missing values with 'nd' to indicate "no data".</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
Isotope-ratio Mass Spectrometer
Isotope-ratio Mass Spectrometer
PI Supplied Instrument Name: Isotope-ratio Mass Spectrometer PI Supplied Instrument Description:All isotopic measurements were conducted on a Thermo Finnigan Delta PLUS XP 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 bottle
Niskin bottle
PI Supplied Instrument Name: Niskin bottle PI Supplied Instrument Description:Samples were collected from Niskin bottles. 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/
Nutrient Autoanalyzer
Nutrient Autoanalyzer
PI Supplied Instrument Name: Nutrient Autoanalyzer PI Supplied Instrument Description:Nitrate and nitrite concentrations were measured on separate aliquots by auto analyzer at the WHOI nutrient facility. Instrument Name: Nutrient Autoanalyzer Instrument Short Name:Nutrient Autoanalyzer Instrument Description: Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
Cruise: KN182-09
KN182-09
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN182-09
James W. Moffett
Woods Hole Oceanographic Institution
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel