http://lod.bco-dmo.org/id/dataset/692791
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
2017-04-28
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Southern Ocean deep-sea fossil coral (Desmophyllum dianthus) nitrogen isotope records generated using Monte Carlo and Kalman Filters generated using Monte Carlo and Kalman Filters (DeepSeaCoralNitrogen project)
2017-04-28
publication
2017-04-28
revision
BCO-DMO Linked Data URI
2017-04-28
creation
http://lod.bco-dmo.org/id/dataset/692791
Maria Prokopenko
Pomona College
principalInvestigator
Daniel M. Sigman
Princeton University
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: Prokopenko, M., Sigman, D. M. (2017) Southern Ocean deep-sea fossil coral (Desmophyllum dianthus) nitrogen isotope records generated using Monte Carlo and Kalman Filters generated using Monte Carlo and Kalman Filters (DeepSeaCoralNitrogen project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2017-04-28 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/692791 [access date]
Southern Ocean deep-sea fossil coral (Desmophyllum dianthus) nitrogen isotope records generated using Monte Carlo and Kalman Filters Dataset Description: <p>[Note: 28 Apr 2017] The metadata description of this dataset is still in progress. &nbsp;The metadata have not yet been reviewed by the data contributor.</p>
<p>This dataset contains&nbsp;average scleractinian coral (Desmophyllum dianthus)&nbsp;nitrogen isotope records over the past 40,000 years generated using Monte Carlo and Kalman Filters approaches. &nbsp;</p>
<p><strong>These data were published in:</strong></p>
<p>Wang, X. T., Sigman, D. M., Prokopenko, M. G., Adkins, J. F., Robinson, L. F., Hines, S. K., ... &amp; Haug, G. H. (2017). Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age. Proceedings of the National Academy of Sciences, 201615718. doi:&nbsp;<a href="http://doi.org/10.1073/pnas.1615718114">10.1073/pnas.1615718114</a></p>
<p><strong>Related&nbsp;</strong><strong>dataset</strong><strong>&nbsp;also from this publication:</strong><br />
<a href="https://www.bco-dmo.org/dataset/683864" target="_blank">Southern Ocean deep-sea coral nitrogen isotopes</a></p> Methods and Sampling: <p>A synthetic time series of d15N and age were generated using observed measurements in Tasmania and the Drake Passage. Monte Carlo simulation and a Kalman&nbsp;smoother were combined to obtain&nbsp;the best&nbsp;estimate of the average d15N time&nbsp;series on a regular time grid and its corresponding confidence interval. &nbsp;</p>
<p>For a more detailed methodology description see:</p>
<p>Wang, X. T., Sigman, D. M., Prokopenko, M. G., Adkins, J. F., Robinson, L. F., Hines, S. K., ... &amp; Haug, G. H. (2017). Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age. Proceedings of the National Academy of Sciences, 201615718. doi:&nbsp;<a href="http://doi.org/10.1073/pnas.1615718114">10.1073/pnas.1615718114</a></p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1234664 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1234664
onGoing
Maria Prokopenko
Pomona College
323-630-4068
185 E Sixth St
Claremont
CA
91711-4434
US
Maria.Prokopenko@pomona.edu
pointOfContact
Daniel M. Sigman
Princeton University
609-258-2194
Department of Geosciences M52 Guyot Hall
Princeton
NJ
08544
USA
sigman@princeton.edu
pointOfContact
asNeeded
Unknown
source_location
age
d15N
d15N_sd1
d15N_sd2
Gas chromatography
isotope ratio mass spectrometry
theme
None, User defined
site
age
d15N measured in biota
featureType
BCO-DMO Standard Parameters
Gas Chromatograph
Isotope-ratio Mass Spectrometer
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.
Nitrogen isotopic (d15N) composition of carbonate-bound organic nitrogen in Deep Sea Corals: A new, high resolution proxy for N cycle studies
https://osprey.bco-dmo.org/project/683473
Nitrogen isotopic (d15N) composition of carbonate-bound organic nitrogen in Deep Sea Corals: A new, high resolution proxy for N cycle studies
<p><em>PI supplied project description:</em></p>
<p><strong>Intellectual Merit</strong></p>
<p>The history of the nitrogen (N) cycle provides insight into the links between past climate and marine biogeochemical cycles. Interpretations of the history of the N cycle rely on the nitrogen isotopic composition (del15N) of Particulate Organic Nitrogen (del15N-PON) preserved in sedimentary archives such as: bulk organic nitrogen (ON) buried in anoxic/suboxic sediments, skeletal-bound ON in diatom frustules and foraminiferal tests, and organic skeletons of deep-sea proteinaceous corals. As is often is the case with paleo-proxies, these archives have advantages, as well as limitations, the latter arising from temporal and/or spatial restrictions in distribution. Therefore, multiple archives are needed for better understanding the patterns and causes of N cycle variability in the past.</p>
<p>To improve upon the geographic and temporal resolution of del15N paleo-records, this projects evaluates a new proxy for the history of the marine N cycle-- del15N of ON bound within the mineral lattice of deep-sea corals (DSC). The project included two parts: 1) a modern calibration study; 2) a survey of d15N in the fossil corals from the Southern Ocean and comparison with previously published records of the diatom- and foraminifera-bound del15N.</p>
<p><strong>Summary of findings</strong></p>
<p>A survey of modern coral specimens (Desmophyllum dianthus) from disparate oceanographic environments, each chosen to represent a distinct del15N signature of PON exported from the euphotic zone showed strong statistical correlation between the coral-bound ON (CB-del15N) and del15N of regional export PON (Wang et al., 2014), establishing the fidelity of CB-del15N proxy.</p>
<p>In the second phase, the research group generated a set of time-resolved records of del15N in fossil D. dianthus from the Subantarctic (south of Tasmania and northern Drake Passage) and Antarctic (southern Drake Passage) regions of the Southern Ocean, spanning 40Ka through the present (Wang et al., 2017). In the modern Southern Ocean, the surface nutrients (including nitrate) are not fully consumed, resulting in leakage of deeply sequestered CO2 to the atmosphere. Incomplete nitrate consumption is manifested in low del15N of the exported modern PON. Wang et al. (2017) found that in both Southern Ocean regions the average CB-del15N during Last Glacial Maximum (LGM) was 4 to 5 permil higher than today. This finding provided a strong proof for the previously proposed hypothesis of the more efficient biological pump in the Southern Ocean, driving lower pCO2 during the ice ages. Stronger vertical stratification in the Antarctic and higher iron supply in the Subantarctic zones are the two likely reasons for the more efficient surface nitrate uptake during the LGM than occurs in the modern Southern Ocean.</p>
<p>The trends defined by the CB-del15N in the Southern Ocean corals were comparable to the previously published del15N records of diatom- and foraminifera-bound ON from both the Antarctic and Subantarctic zones, validating the reliability of the fossil deep-sea corals as paleo-archives. However, higher temporal resolution afforded by the DSC revealed a previously unnoticed feature: the CB-del15N in the Antarctic Zone continued to decrease through the Holocene, pointing to the ongoing decline in the nitrate uptake efficiency. One possible mechanism driving this change is the intensifying overturning of the Southern Ocean, which might have contributed to the rise in atmospheric pCO2 since 8 kyr.</p>
<p>For more information see the <a href="https://www.nsf.gov/awardsearch/showAward?AWD_ID=1234664" target="_blank">NSF award page</a></p>
DeepSeaCoralNitrogen
largerWorkCitation
project
eng; USA
oceans
2017-04-28
Sub-Antarctic waters and Antarctic waters
0
BCO-DMO catalogue of parameters from Southern Ocean deep-sea fossil coral (Desmophyllum dianthus) nitrogen isotope records generated using Monte Carlo and Kalman Filters generated using Monte Carlo and Kalman Filters (DeepSeaCoralNitrogen 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/711724.rdf
Name: source_location
Units: unitless
Description: <p>Location of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/711725.rdf
Name: age
Units: unitless
Description: <p>Monte Carlo Age (year) in format yyyy</p>
http://lod.bco-dmo.org/id/dataset-parameter/711726.rdf
Name: d15N
Units: permil vs. air (0/00 vs air)
Description: <p>d15N (ratio of stable isotopes 15N:14N);Generated using Monte Carlo and Kalman Filter statistical techniques</p>
http://lod.bco-dmo.org/id/dataset-parameter/711727.rdf
Name: d15N_sd1
Units: permil vs. air (0/00 vs air)
Description: <p>One sigma errors of d15N</p>
http://lod.bco-dmo.org/id/dataset-parameter/711728.rdf
Name: d15N_sd2
Units: permil vs. air (0/00 vs air)
Description: <p>Two sigma errors of d15N</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
41703
https://datadocs.bco-dmo.org/file/4WW2jRRfzN2E9X/MonteCarlo.csv
MonteCarlo.csv
Primary data file for dataset ID 692791
download
https://osprey.bco-dmo.org/dataset/692791/data/download
download
onLine
dataset
<p>A synthetic time series of d15N and age were generated using observed measurements in Tasmania and the Drake Passage. Monte Carlo simulation and a Kalman&nbsp;smoother were combined to obtain&nbsp;the best&nbsp;estimate of the average d15N time&nbsp;series on a regular time grid and its corresponding confidence interval. &nbsp;</p>
<p>For a more detailed methodology description see:</p>
<p>Wang, X. T., Sigman, D. M., Prokopenko, M. G., Adkins, J. F., Robinson, L. F., Hines, S. K., ... &amp; Haug, G. H. (2017). Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age. Proceedings of the National Academy of Sciences, 201615718. doi:&nbsp;<a href="http://doi.org/10.1073/pnas.1615718114">10.1073/pnas.1615718114</a></p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Data Manager Processing Notes:<br />
* added a conventional header with dataset name, PI name, version date<br />
* modified parameter names to conform with BCO-DMO naming conventions<br />
* blank values replaced with no data value 'nd'<br />
* combined Excel sheets in original .xlsx file into one tabular dataset. &nbsp;Created column "source_location" to capture region information which was why the sheets were originally separated.</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
Gas chromatography
Gas chromatography
PI Supplied Instrument Name: Gas chromatography Instrument Name: Gas Chromatograph Instrument Short Name:Gas Chromatograph Instrument Description: Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC) Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/
isotope ratio mass spectrometry
isotope ratio mass spectrometry
PI Supplied Instrument Name: isotope ratio mass spectrometry 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/