http://lod.bco-dmo.org/id/dataset/935435
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
2024-08-12
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Surface Sedimentary Black Carbon Concentrations, Flux, and Carbon Isotopes Values from the R.V. Endeavor EN651 in the Equatorial Atlantic Ocean from March 2020
2024-09-16
publication
2024-09-16
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-02-04
publication
https://doi.org/10.26008/1912/bco-dmo.935435.1
Rainer Lohmann
University of Rhode Island
principalInvestigator
Robert Pockalny
University of Rhode Island
principalInvestigator
Frank J. Pavia
California Institute of Technology
principalInvestigator
Rebecca Robinson
University of Rhode Island
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: Katz, S., Robinson, R., Pavia, F. J., Pockalny, R., Lohmann, R. (2024) Surface Sedimentary Black Carbon Concentrations, Flux, and Carbon Isotopes Values from the R.V. Endeavor EN651 in the Equatorial Atlantic Ocean from March 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-09-16 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.935435.1 [access date]
Methods and Sampling: <p><span style="font-size:14px"><strong>Core collection</strong></span></p>
<p><span style="font-size:14px">MC-800 tubes were labeled (EN651-“Site number”-MC”coring attempt number”“letter of core”,ex: EN651-01-MC01A) and photographed before sectioning. The water on top of the core was syphoned off and a thin piece of stainless-steel sheet was slid under the foot of the tube. The foot was bent up and the stainless-steel sheet was used to transfer the core to the core extruder. Cores were sectioned at 1 cm intervals down to 10 cm, then 2 cm intervals down to 20 cm, using the piece of stainless-steel and a cake spatula to cut them. The remainder of the core was wrapped in combusted aluminum foil and placed in a zip-lock bag for storage. Sections of cores were stored in amber glass jars placed in a freezer. One core was transferred with the extruder to a PVC tube and capped for archival storage. If 5 or more cores were recovered, 0.5 cm sections would be taken down to 10 cm and the remainder of the core wrapped in foil and zip-lock bagged before being frozen. Due to a limited supply of jars, the 0.5 cm core sections were wrapped in combusted aluminum foil and placed in a ziplock bag before being stored with other samples. All cores and core sections were stored at -20 ̊C.</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Analytical methods</strong><br />
Surface sediment samples (0 – 1 cm) were dried at 60 ˚C until dry and passed through a 420 µm sieve before analysis. Total organic carbon (TOC) samples were weighed into silver capsules (Elemental microanalysis silver capsules ultra-clean pressed 8 x 5 mm, D2030), acidified to remove inorganic carbon (2 M HCl), and folded into tin capsules (Costech tin capsules 10 x 10 mm, 041073). Black carbon was isolated using the CTO 375 method (Gustafsson et al. 1997, 2001). 100 mg of samples where weighed out into ceramic crucibles and spread into a thin layer to&nbsp;prevent charring. Samples were combusted at 375 ˚C for 24 hrs. under the flow of ultra high purity air (0.4 L min<sup>-1</sup>). The remaining sediment was transferred to GC <span style="font-family:arial,helvetica,sans-serif">(gas chromatography) </span>vials for storage, then processed the same as the TOC samples to remove any inorganic carbon present (as detailed above).</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Sampling equipment</strong></span></p>
<p><span style="font-size:14px">Sediment cores were collected using an MC-800</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Analytical instrumentation</strong></span></p>
<p><span style="font-size:14px">&nbsp;An Elemental Analyzer (Costech 4010 Elemental Analyzer) was used for quantification of the BC and TOC fractions. The same elemental analyzer&nbsp;coupled to an Isotope Ratio Mass Spectrometer (Thermo Delta V Advantage) was used for the sample carbon isotopes.&nbsp;&nbsp;Radiocarbon isotopes were measured at the National Ocean Sciences Accelerator Mass spectrometry.</span></p>
<p>&nbsp;</p>
<p><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:14px"><strong>Sediment cores availability</strong></span></span></p>
<p><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:14px">Sediment cores are stored at the NSF-funded Rock and Core Repository at GSO-URI and access to the samples is available through established protocols. Solid material, in the form of cores are curated and retained after the expedition and are available to other investigators that wish to use them for other means (Lohmann 2020).</span></span></p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1924191 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1924191
onGoing
Rainer Lohmann
University of Rhode Island
401-874-6612
South Ferry Road URI Bay Campus
Narragansett
RI
02882
USA
rlohmann@uri.edu
pointOfContact
Robert Pockalny
University of Rhode Island
401-874-6926
215 South Ferry Road
Narragansett
RI
02882
USA
rpockalny@uri.edu
pointOfContact
Frank J. Pavia
California Institute of Technology
1503 NE Boat Street Box 357940
Seattle
Washington
98195-7940
USA
fjpavia@uw.edu
pointOfContact
Rebecca Robinson
University of Rhode Island
rebecca_r@uri.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Name
Cruise_ID
Site_ID
Coring_Attempt
Core_Letter
Collection_Date
Lat
Lon
Depth
MAR
TOC
TOC_d13C
TOC_D14C
BC
BC_sd
BC_d13C
BC_D14C
BC_flux
BC_flux_sd
Costech 4010 Elemental Analyzer
Isotope Ratio Mass Spectrometer
MC-800
theme
None, User defined
core id
Cruise identfier
Site_ID
sample identification
date
latitude
longitude
depth_w
No BCO-DMO term
total organic Carbon
standard deviation
flux
featureType
BCO-DMO Standard Parameters
Costech International Elemental Combustion System (ECS) 4010
Isotope-ratio Mass Spectrometer
Multi Corer
instrument
BCO-DMO Standard Instruments
EN651
service
Deployment Activity
Tropical Atlantic
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.
Concentrations and source assessment of black carbon across tropical Atlantic air and sediment
https://osprey.bco-dmo.org/project/818636
Concentrations and source assessment of black carbon across tropical Atlantic air and sediment
<p><em>NSF Award Abstract:</em><br />
Black carbon is formed during the incomplete burning of fuels (e.g., the black clouds of smoke emitted by buses and trucks). Black carbon does not degrade easily in the environment and can be transported long distances, even reaching the seafloor. Yet the fluxes of black carbon in the environment are not well known, particularly in the oceans. Rivers are considered the dominant source of black carbon to the oceans. However, recent results suggest that there may be regions of the ocean where the atmospheric delivery of black carbon may be important. This study investigates whether biomass burning (e.g., wildfires) in Africa is a source of black carbon to the tropical Atlantic Ocean. The unique molecular and isotopic properties of black carbon will be used to identify black carbon in the atmosphere, water and sediment in the study region. Sediment, water column and atmospheric particles will be collected during a 3-week research cruise across the tropical Atlantic Ocean. Two different approaches will be used to quantify black carbon in the environment. The research is relevant and timely for our understanding of the carbon cycle, a key component of our ability to forecast climate and its change. The project supports a graduate student and provide opportunities for high school students participating in the SMILE Program (Science and Math Investigative Learning Experiences). This project is jointly funded by the Chemical Oceanography Program and the Established Program to Stimulate Competitive Research (EPSCoR).</p>
<p>Surface sediment samples will be collected at ten sites across the tropical Atlantic Ocean in a region known to be impacted by biomass burning events (wildfires) in Africa. Appropriate locations for sediment sampling will be identified using state-of-the-art ship equipment to ensure a successful coring operation. Once collected, the black carbon and organic carbon fractions of the sediment will be isolated and measured. A range of isotopic and molecular marker approaches will be used to identify the likely source of these carbon fractions. The central hypothesis is that the black carbon residing in the sediment of the tropical Atlantic Ocean is derived from biomass burning and delivered through atmospheric deposition. Carbon derived from recent biomass burning contains C-14 isotopes that indicate 'young' (or recently produced) carbon, while carbon from fossil fuels ('old carbon') has no C-14 due to radioactive decay. To further assess the origin of the black carbon in the region, water column and atmospheric particles will be collected during the research cruise. The origin of the atmospheric black carbon particles (biomass burning or fossil fuel emissions) will be established through a collaboration with colleagues in Sweden. The broader impacts of this research include the engagement of high school students through The SMILE Program (Science and Math Investigative Learning Experiences) at the University of Rhode Island. The project also provides training opportunities for graduate and undergraduate students, with a focus on recruitment of students from under-represented groups.</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>
Tropical Atlantic Black Carbon
largerWorkCitation
project
eng; USA
oceans
Tropical Atlantic
-48.145
-17.5
4.9969
10.375
2020-03-01
2020-03-15
Tropical North Atlantic Ocean
0
BCO-DMO catalogue of parameters from Surface Sedimentary Black Carbon Concentrations, Flux, and Carbon Isotopes Values from the R.V. Endeavor EN651 in the Equatorial Atlantic Ocean from March 2020
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/937764.rdf
Name: Name
Units: unitless
Description: <p>Name of the sediment core from which the top 1 cm was sectioned</p>
http://lod.bco-dmo.org/id/dataset-parameter/937765.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/937766.rdf
Name: Site_ID
Units: unitless
Description: <p>Site ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/937767.rdf
Name: Coring_Attempt
Units: unitless
Description: <p>Coring attempt number</p>
http://lod.bco-dmo.org/id/dataset-parameter/937768.rdf
Name: Core_Letter
Units: unitless
Description: <p>Core letter</p>
http://lod.bco-dmo.org/id/dataset-parameter/937769.rdf
Name: Collection_Date
Units: unitless
Description: <p>Date the multicore was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/937770.rdf
Name: Lat
Units: decimal degrees
Description: <p>Latitude of sampling site, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/937771.rdf
Name: Lon
Units: decimal degrees
Description: <p>Longitude of sampling site, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/937772.rdf
Name: Depth
Units: meters (m)
Description: <p>Water depth of sample site</p>
http://lod.bco-dmo.org/id/dataset-parameter/937773.rdf
Name: MAR
Units: grams per square centimeters per thousand years (g cm-2 kyr-1)
Description: <p>extraterrestrial 3He mass accumulation rate</p>
http://lod.bco-dmo.org/id/dataset-parameter/937774.rdf
Name: TOC
Units: milligrams per gram dry weight (mg/g)
Description: <p>Total organic carbon concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/937775.rdf
Name: TOC_d13C
Units: per mill (‰)
Description: <p>Total organic carbon delta 13C value</p>
http://lod.bco-dmo.org/id/dataset-parameter/937776.rdf
Name: TOC_D14C
Units: per mill (‰)
Description: <p>Delta 14C value of total organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/937777.rdf
Name: BC
Units: milligrams per gram dry weight (mg/g)
Description: <p>Black carbon concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/937778.rdf
Name: BC_sd
Units: milligrams per gram dry weight (mg/g)
Description: <p>Black carbon concentration standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/937779.rdf
Name: BC_d13C
Units: per mill (‰)
Description: <p>Black carbon delta 13C value</p>
http://lod.bco-dmo.org/id/dataset-parameter/937780.rdf
Name: BC_D14C
Units: per mill (‰)
Description: <p>Delta 14C value of the black carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/937781.rdf
Name: BC_flux
Units: milligrams per square centimeters per thousand years (mg cm-2 kyr-1)
Description: <p>Flux of black carbon to sediments</p>
http://lod.bco-dmo.org/id/dataset-parameter/937782.rdf
Name: BC_flux_sd
Units: milligrams per square centimeters per thousand years (mg cm-2 kyr-1)
Description: <p>The standard deviation of the flux of black carbon to sediments</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
1461
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/843865e9-457e-434b-91a3-5541c432da9a/content
download
https://doi.org/10.26008/1912/bco-dmo.935435.1
download
onLine
dataset
<p><span style="font-size:14px"><strong>Core collection</strong></span></p>
<p><span style="font-size:14px">MC-800 tubes were labeled (EN651-“Site number”-MC”coring attempt number”“letter of core”,ex: EN651-01-MC01A) and photographed before sectioning. The water on top of the core was syphoned off and a thin piece of stainless-steel sheet was slid under the foot of the tube. The foot was bent up and the stainless-steel sheet was used to transfer the core to the core extruder. Cores were sectioned at 1 cm intervals down to 10 cm, then 2 cm intervals down to 20 cm, using the piece of stainless-steel and a cake spatula to cut them. The remainder of the core was wrapped in combusted aluminum foil and placed in a zip-lock bag for storage. Sections of cores were stored in amber glass jars placed in a freezer. One core was transferred with the extruder to a PVC tube and capped for archival storage. If 5 or more cores were recovered, 0.5 cm sections would be taken down to 10 cm and the remainder of the core wrapped in foil and zip-lock bagged before being frozen. Due to a limited supply of jars, the 0.5 cm core sections were wrapped in combusted aluminum foil and placed in a ziplock bag before being stored with other samples. All cores and core sections were stored at -20 ̊C.</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Analytical methods</strong><br />
Surface sediment samples (0 – 1 cm) were dried at 60 ˚C until dry and passed through a 420 µm sieve before analysis. Total organic carbon (TOC) samples were weighed into silver capsules (Elemental microanalysis silver capsules ultra-clean pressed 8 x 5 mm, D2030), acidified to remove inorganic carbon (2 M HCl), and folded into tin capsules (Costech tin capsules 10 x 10 mm, 041073). Black carbon was isolated using the CTO 375 method (Gustafsson et al. 1997, 2001). 100 mg of samples where weighed out into ceramic crucibles and spread into a thin layer to&nbsp;prevent charring. Samples were combusted at 375 ˚C for 24 hrs. under the flow of ultra high purity air (0.4 L min<sup>-1</sup>). The remaining sediment was transferred to GC <span style="font-family:arial,helvetica,sans-serif">(gas chromatography) </span>vials for storage, then processed the same as the TOC samples to remove any inorganic carbon present (as detailed above).</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Sampling equipment</strong></span></p>
<p><span style="font-size:14px">Sediment cores were collected using an MC-800</span></p>
<p>&nbsp;</p>
<p><span style="font-size:14px"><strong>Analytical instrumentation</strong></span></p>
<p><span style="font-size:14px">&nbsp;An Elemental Analyzer (Costech 4010 Elemental Analyzer) was used for quantification of the BC and TOC fractions. The same elemental analyzer&nbsp;coupled to an Isotope Ratio Mass Spectrometer (Thermo Delta V Advantage) was used for the sample carbon isotopes.&nbsp;&nbsp;Radiocarbon isotopes were measured at the National Ocean Sciences Accelerator Mass spectrometry.</span></p>
<p>&nbsp;</p>
<p><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:14px"><strong>Sediment cores availability</strong></span></span></p>
<p><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:14px">Sediment cores are stored at the NSF-funded Rock and Core Repository at GSO-URI and access to the samples is available through established protocols. Solid material, in the form of cores are curated and retained after the expedition and are available to other investigators that wish to use them for other means (Lohmann 2020).</span></span></p>
Specified by the Principal Investigator(s)
<p>Data was processed using Microsoft Excel and python (version: 3.9.18) with pandas package (version: 2.2.2)&nbsp;</p>
Specified by the Principal Investigator(s)
Loaded the submitted file "Surface Sedimentary Black Carbon Concentrations and Stable and Radiocarbon Isotopes.xlsx" into BCO-DMO's data processor Laminar for processing.
Renamed parameters following the BCO-DMO convention of replacing spaces with underscores and replacing Greek symbols by their name.
Reformatted the parameter Collection_date into an ISO 8601 format of %Y-%m-%d.
Added the parameter columns ‘Cruise_ID’, ‘Site_ID’, ‘Coring_Attempt’, and 'Core_Letter' with values taken from the 'Name' parameter. Each Name value is of the format <Cruise_ID>-<Site_ID>-<Coring_Attempt><Core_Letter>, ex: EN651-01-MC01A.
Saved the dataset table to a CSV file named 935435_v1_surface_sedimentary_black_carbon.csv
Specified by BCO-DMO Data Managers
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
Costech 4010 Elemental Analyzer
Costech 4010 Elemental Analyzer
PI Supplied Instrument Name: Costech 4010 Elemental Analyzer Instrument Name: Costech International Elemental Combustion System (ECS) 4010 Instrument Short Name:Costech ECS 4010 Instrument Description: The ECS 4010 Nitrogen / Protein Analyzer is an elemental combustion analyser for CHNSO elemental analysis and Nitrogen / Protein determination. The GC oven and separation column have a temperature range of 30-110 degC, with control of +/- 0.1 degC.
Isotope Ratio Mass Spectrometer
Isotope Ratio Mass Spectrometer
PI Supplied Instrument Name: Isotope Ratio Mass Spectrometer PI Supplied Instrument Description:Isotope Ratio Mass Spectrometer (Thermo Delta V Advantage) 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/
MC-800
MC-800
PI Supplied Instrument Name: MC-800 Instrument Name: Multi Corer Instrument Short Name:Multi Corer Instrument Description: The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/51/
Cruise: EN651
EN651
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel
EN651
Rainer Lohmann
University of Rhode Island
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel