http://lod.bco-dmo.org/id/dataset/865829
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
2021-12-06
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
DOC and TOC of seawater collected during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2018 to 2020
2021-12-06
publication
2021-12-06
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-12-20
publication
https://doi.org/10.26008/1912/bco-dmo.865829.1
Phoebe J. Lam
University of California-Santa Cruz
principalInvestigator
Andrea J. Fassbender
National Oceanic and Atmospheric Administration
principalInvestigator
Sophia Johannessen
Fisheries and Oceans Canada, Pacific Region
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: Johannessen, S., Fassbender, A. J., Long, J. S., Wright, C. (2021) DOC and TOC of seawater collected during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2018 to 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-12-06 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.865829.1 [access date]
Methods and Sampling: <p><strong>Samples</strong><br />
Sampling was conducted aboard the CCGS John P. Tully during five cruises (2018-2020) in the northeast Pacific Ocean from Vancouver Island to Station P (50°N, 145°W).&nbsp;<br />
Fisheries and Oceans Canada (DFO) Cruise numbers: 2018-40, 2019-001, 2019-006, 2019-008, 2020-001</p>
<p>Seawater samples for dissolved and total organic carbon (DOC, TOC) were collected from 10 L&nbsp;Niskin bottles into pre-cleaned 40 mL scintillation vials, with 0.125 cm Teflon low-bleed septa.&nbsp; The vials had been cleaned in Extran 300 and rinsed several times with Type I Ultrapure water. Vials&nbsp;were then soaked in 10% HCl for a minimum of four hours and rinsed several times with Type I Ultrapure water. Cleaned vials were&nbsp;allowed to dry and were then baked at 450°C for a minimum of 5 hours. Septa were briefly washed in 10% HCl, rinsed with Type I Ultrapure water and allowed to air dry.</p>
<p>Samples for TOC&nbsp;were collected directly from the spigot of the Niskin bottle. Samples for DOC were filtered through a Millipore Opticap XL Durapore 0.22 µm inline filter cartridge (Product No. KVGLA04HH3) attached to the spigot. Vials were rinsed three times with sample water and then filled to about three-quarter capacity, to avoid breakage during freezing. The samples were quick-frozen immediately after collection, using a stainless-steel freezer block, and then stored frozen at -20°C until analysis.</p>
<p>DOC and TOC were measured at the Institute of Ocean Sciences, using a Shimadzu TOC-L DOC/TOC analyzer&nbsp;(measurement reproducibilty of ± 1.5 %), following Standard Operating Procedure 7 from Chapter 4 in&nbsp;Dickson et al. (2007), with the following modifications: 1) sulphuric acid was used in place of phosphoric acid to reduce vitrification of the column with saline samples; and 2) the sparging time was increased to 150 seconds.</p>
<p><strong>Standards</strong></p>
<ul>
<li>A 1000ppm standard of potassium hydrogen phthalate was prepared using Type 1 water (defined below). The standard stock solution was stored refrigerated for up to 2 months.</li>
<li>Standard dilutions were done by calibrated pipette into volumetric flasks. They were made with Type 1 water that had been further processed to reduce TOC into the 2-3 ppb range. Dilution standards have a shelf life of two weeks. The very low standard concentrations (0.1-0.5 ppm) were made in larger volume flasks to reduce the errors associated with pipetting small amounts.</li>
<li>Type I - Ultrapure, Type I water is defined by the American Society for Testing and Materials (ASTM) as having a resistivity of &gt;18 MΩ-cm, a conductivity of &lt;0.056 µS/cm&nbsp;and &lt;50 ppb of Total Organic Carbons (TOC).</li>
<li>Low Carbon Water (LCW) is a purchased, 2 μM, reference standard used to determine the instrument blank. Miami Seawater is a purchased, 42-45 μM, reference standard used to determine when the column/instrument was running cleanly enough to measure low concentrations in seawater.</li>
</ul>
<p>&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2032754 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2032754
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756932 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756932
completed
Phoebe J. Lam
University of California-Santa Cruz
831-459-4587
1156 High St. Department of Ocean Sciences
Santa Cruz
CA
95064
USA
pjlam@ucsc.edu
pointOfContact
Andrea J. Fassbender
National Oceanic and Atmospheric Administration
509-438-4961
7600 Sand Point Way N.E.
Seattle
WA
98115
USA
andrea.j.fassbender@noaa.gov
pointOfContact
Sophia Johannessen
Fisheries and Oceans Canada, Pacific Region
(250) 363-6616
Institute of Ocean Sciences (Fisheries and Oceans Canada) 9860 W. Saanich Rd., P.O. Box 6000
Sidney
British Columbia
V8L 5P4
Canada
Sophia.johannessen@dfo-mpo.gc.ca
pointOfContact
asNeeded
Dataset Version: 1
Unknown
ISO_DateTime_UTC
Vessel
Cruise_ID
Station
Sample_Number
Latitude
Longitude
Depth
DOC
DOC_QF
TOC
TOC_QF
Niskin bottle
Shimadzu TOC-L DOC/TOC analyzer
theme
None, User defined
ISO_DateTime_UTC
ship
Cruise identfier
station
sample identification
latitude
longitude
depth
dissolved organic Carbon
quality flag
total organic Carbon
featureType
BCO-DMO Standard Parameters
Niskin bottle
Shimadzu TOC-L Analyzer
instrument
BCO-DMO Standard Instruments
Line-P_cruises
service
Deployment Activity
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.
Constraining Upper-Ocean Carbon Export with Biogeochemical Profiling Floats
https://osprey.bco-dmo.org/project/838069
Constraining Upper-Ocean Carbon Export with Biogeochemical Profiling Floats
<p>OCE-1756932 Start Date: 2018-03-01<br />
OCE-2032754 Start Date: 2020-05-28</p>
<p><strong>NSF abstract:</strong><br />
A goal in chemical oceanography is to advance our understanding of the global carbon cycle, specifically to quantify the transfer of carbon from the surface ocean to depth through the sinking of particles produced by marine organisms. Yet, modern global estimates of this process (commonly called carbon export) differ by over 100%. These estimates are often derived from regional relationships between ocean measurements and satellite observations that are then applied globally. Persistent differences between the satellite and field-based estimates of carbon export have been found throughout the ocean, suggesting that improvements are needed. This project will determine whether profiling floats equipped with chemical sensors can be used to estimate the export of carbon in the ocean. Floats will be deployed at Ocean Station Papa, but the approach is scalable in nature and could be used to validate and improve the satellite algorithms used for global carbon export determinations. The project will support a female, early career scientist and a postdoc, as well as facilitate international collaboration with Canadian scientists. Additionally, the results may assist the National Aeronautics and Space Administration (NASA) EXPORTS campaign as well as other satellite carbon export development efforts.</p>
<p>Modern global estimates of the biological pump differ by over 100% (~5 to >12 Pg C yr-1) making it challenging to determine the role of marine biogeochemical (BGC) cycling in modern climate and climate variability. Global carbon export estimates are often derived from regional empirical relationships between field and satellite observations that are then applied globally. Persistent discrepancies between unique satellite algorithms and unique geochemical approaches suggest that accurately quantifying the biological pump remains a fundamental research goal. This project will assess the capability of using BGC profiling floats to estimate the export of distinct biogenic carbon pools (dissolved and particulate organic carbon, and particulate inorganic carbon). By using BGC floats to close multiple upper ocean tracer budgets this project will address two known issues common to other geochemical approaches: assumptions about (1) dissolved organic carbon cycling and (2) the integration depth used for annual carbon export assessments. The method will be tested at Ocean Station Papa, but is scalable in nature and could be used to develop a carbon export database suitable for the validation and training of satellite algorithms required for global carbon export determinations. Results from the floats will be compared to satellite carbon export algorithm estimates over the 5-year float lifetimes. Ten years of existing BGC data from profiling floats and a mooring in the region will also be used to provide further context about interannual variability.</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>
EXPORTS BGC Floats
largerWorkCitation
project
eng; USA
oceans
-145.002
-125.998
48.598
50.613
2018-09-13
2020-02-17
Eastern Subarctic Pacific near Ocean Station Papa (50°N, 145°W)
0
BCO-DMO catalogue of parameters from DOC and TOC of seawater collected during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2018 to 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/865858.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time in ISO8601 standard format (YYYY-MM-DDThh:mm:ssZ)</p>
http://lod.bco-dmo.org/id/dataset-parameter/865859.rdf
Name: Vessel
Units: unitless
Description: <p>Vessel</p>
http://lod.bco-dmo.org/id/dataset-parameter/865860.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/865861.rdf
Name: Station
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/865862.rdf
Name: Sample_Number
Units: unitless
Description: <p>Sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/865863.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/865864.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/865865.rdf
Name: Depth
Units: meters (m)
Description: <p>Depth of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/865866.rdf
Name: DOC
Units: micromoles (uM)
Description: <p>Dissolved organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/865867.rdf
Name: DOC_QF
Units: unitless
Description: <p>Quality Flag for DOC measurement where 2=acceptable; 3=questionable; 4=bad; 5=not reported; 6=mean of replicates; 9=not sampled</p>
http://lod.bco-dmo.org/id/dataset-parameter/865868.rdf
Name: TOC
Units: micromoles (uM)
Description: <p>Total organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/865869.rdf
Name: TOC_QF
Units: unitless
Description: <p>Quality Flag for TOC measurement where 2=acceptable; 3=questionable; 4=bad; 5=not reported; 6=mean of replicates; 9=not sampled</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
27998
https://darchive.mblwhoilibrary.org/bitstream/1912/27836/1/dataset-865829_doc-and-toc-near-station-p__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.865829.1
download
onLine
dataset
<p><strong>Samples</strong><br />
Sampling was conducted aboard the CCGS John P. Tully during five cruises (2018-2020) in the northeast Pacific Ocean from Vancouver Island to Station P (50°N, 145°W).&nbsp;<br />
Fisheries and Oceans Canada (DFO) Cruise numbers: 2018-40, 2019-001, 2019-006, 2019-008, 2020-001</p>
<p>Seawater samples for dissolved and total organic carbon (DOC, TOC) were collected from 10 L&nbsp;Niskin bottles into pre-cleaned 40 mL scintillation vials, with 0.125 cm Teflon low-bleed septa.&nbsp; The vials had been cleaned in Extran 300 and rinsed several times with Type I Ultrapure water. Vials&nbsp;were then soaked in 10% HCl for a minimum of four hours and rinsed several times with Type I Ultrapure water. Cleaned vials were&nbsp;allowed to dry and were then baked at 450°C for a minimum of 5 hours. Septa were briefly washed in 10% HCl, rinsed with Type I Ultrapure water and allowed to air dry.</p>
<p>Samples for TOC&nbsp;were collected directly from the spigot of the Niskin bottle. Samples for DOC were filtered through a Millipore Opticap XL Durapore 0.22 µm inline filter cartridge (Product No. KVGLA04HH3) attached to the spigot. Vials were rinsed three times with sample water and then filled to about three-quarter capacity, to avoid breakage during freezing. The samples were quick-frozen immediately after collection, using a stainless-steel freezer block, and then stored frozen at -20°C until analysis.</p>
<p>DOC and TOC were measured at the Institute of Ocean Sciences, using a Shimadzu TOC-L DOC/TOC analyzer&nbsp;(measurement reproducibilty of ± 1.5 %), following Standard Operating Procedure 7 from Chapter 4 in&nbsp;Dickson et al. (2007), with the following modifications: 1) sulphuric acid was used in place of phosphoric acid to reduce vitrification of the column with saline samples; and 2) the sparging time was increased to 150 seconds.</p>
<p><strong>Standards</strong></p>
<ul>
<li>A 1000ppm standard of potassium hydrogen phthalate was prepared using Type 1 water (defined below). The standard stock solution was stored refrigerated for up to 2 months.</li>
<li>Standard dilutions were done by calibrated pipette into volumetric flasks. They were made with Type 1 water that had been further processed to reduce TOC into the 2-3 ppb range. Dilution standards have a shelf life of two weeks. The very low standard concentrations (0.1-0.5 ppm) were made in larger volume flasks to reduce the errors associated with pipetting small amounts.</li>
<li>Type I - Ultrapure, Type I water is defined by the American Society for Testing and Materials (ASTM) as having a resistivity of &gt;18 MΩ-cm, a conductivity of &lt;0.056 µS/cm&nbsp;and &lt;50 ppb of Total Organic Carbons (TOC).</li>
<li>Low Carbon Water (LCW) is a purchased, 2 μM, reference standard used to determine the instrument blank. Miami Seawater is a purchased, 42-45 μM, reference standard used to determine when the column/instrument was running cleanly enough to measure low concentrations in seawater.</li>
</ul>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
<p>Raw voltage peak areas were converted to organic carbon concentration, using a standard curve (0–176.7 μM). The calculated concentration of the LCW water minus 2 μM was subtracted as an instrument blank. Calculations were done using Microsoft Excel.</p>
<p>Problem/Error report:&nbsp;<br />
Data from a few stations were omitted. These reflected missing data&nbsp;or suspected mislabeling of samples.</p>
<p>&nbsp;</p>
<p>=================<br />
<strong>BCO-DMO Processing:</strong></p>
<ul>
<li>Imported data from source file "LineP_DOCTOC.xlsx.xlsx" into the BCO-DMO data system.</li>
<li>Data file imported using missing data identifier&nbsp;"NaN”.&nbsp;The missing data identifier "NaN" in the original source file will be displayed as appropriate based on the type of file you download from the BCO-DMO data system. For example, missing data will be shown as blank (null) values in the csv files. In MATLAB .mat files it will be displayed as NaN. When viewing data at BCO-DMO the missing value will be shown as "nd" meaning "no data."</li>
<li>Combined separate date and time columns to single datetime column with ISO8601 format.&nbsp;&nbsp;</li>
<li>Added column for vessel/ship</li>
<li>Added conventional header with dataset name, PI name, version date.</li>
<li>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).</li>
</ul>
<p>&nbsp;</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
Niskin bottle
Niskin bottle
PI Supplied Instrument Name: Niskin bottle PI Supplied Instrument Description:Seawater samples for dissolved and total organic carbon were collected from 10 L 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/
Shimadzu TOC-L DOC/TOC analyzer
Shimadzu TOC-L DOC/TOC analyzer
PI Supplied Instrument Name: Shimadzu TOC-L DOC/TOC analyzer PI Supplied Instrument Description:DOC and TOC were measured at the Institute of Ocean Sciences, using a Shimadzu TOC-L DOC/TOC analyzer Instrument Name: Shimadzu TOC-L Analyzer Instrument Short Name:Shimadzu TOC-L Instrument Description: A Shimadzu TOC-L Analyzer measures DOC by high temperature combustion method.
Developed by Shimadzu, the 680 degree C combustion catalytic oxidation method is now used worldwide. One of its most important features is the capacity to efficiently oxidize hard-to-decompose organic compounds, including insoluble and macromolecular organic compounds. The 680 degree C combustion catalytic oxidation method has been adopted for the TOC-L series.
http://www.shimadzu.com/an/toc/lab/toc-l2.html Community Standard Description: http://onto.nerc.ac.uk/CAST/124.html
Cruise: Line-P_cruises
Line-P_cruises
Community Standard Description
International Council for the Exploration of the Sea
CCGS John P. Tully
vessel
Community Standard Description
International Council for the Exploration of the Sea
CCGS John P. Tully
vessel