http://lod.bco-dmo.org/id/dataset/866582
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
2021-12-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Underway pH of seawater sampled during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2019 to 2020
2021-12-13
publication
2021-12-13
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-12-22
publication
https://doi.org/10.26008/1912/bco-dmo.866582.1
Phoebe J. Lam
University of California-Santa Cruz
principalInvestigator
Andrea J. Fassbender
National Oceanic and Atmospheric Administration
principalInvestigator
Yuichiro Takeshita
Monterey Bay Aquarium Research Institute
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: Fassbender, A. J., Long, J. S., Takeshita, Y. (2021) Underway pH of seawater sampled during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2019 to 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-12-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.866582.1 [access date]
Methods and Sampling: <p>Underway measurements were made aboard the <em>CCGS John P. Tully</em> during three Canadian Line P cruises (2019-2020) in the northeast Pacific from Vancouver Island to Station P (50°N, 145°W).&nbsp;<br />
Fisheries and Oceans Canada (DFO) Cruise numbers: 2019-006, 2019-008, 2020-001</p>
<p><strong><u>pH</u></strong><br />
A prototype instrument (BGC-SUMO) developed by Dr. Yui Takeshita at MBARI was plumbed into the <em>CCGS John P. Tully</em>&nbsp;seawater intake (~5 m below the surface) line in&nbsp;the wet lab. Underway in situ pH on the total hydrogen ion concentration scale was measured with an ion-sensitive field-effect transistor (ISFET) pH sensor (Deep-Sea DuraFET; Johnson et al., 2016). The instrument was powered through an isolation transformer to prevent ground loop issues. The system was polled using a LabView interface and pH measurements were made every 10 milliseconds. pH sensor data were calibrated using discrete pH samples collected from the underway line (near BGC-SUMO) during the three cruises: 2019-006, 2019-008, and 2020-001 (n= 19, n= 5, n= 5, respectively)</p>
<p><strong><u>Temperature and Salinity</u></strong><br />
Underway temperature and salinity were measured by a Sea-Bird Scientific SBE45 MicroTSG thermosalinograph located directly downstream (&lt; 10 cm) of the BGC-SUMO pH sensor that was plumbed into the <em>CCGS John P. Tully</em> seawater intake (~5 m below the surface) line in the wet lab. Underway temperature and salinity were also measured with a <em>CCGS John P. Tully</em> thermosalinograph at the seawater intake location. These data were used to correct for warming between the seawater intake and the location where the instruments were plumbed into the underway line. The <em>CCGS John P. Tully</em> thermosalinograph data can be accessed through the Canadian Line P Program data archive (<a href="https://waterproperties.ca/linep/2019-001/index.php">https://waterproperties.ca/linep/2019-001/index.php</a>). The instrument was powered through an isolation transformer to prevent ground loop issues. The system was polled using a LabView interface and pH measurements were made every 10 milliseconds.</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
Yuichiro Takeshita
Monterey Bay Aquarium Research Institute
7700 Sandholdt Road
Moss Landing
CA
95039
USA
yui@mbari.org
pointOfContact
asNeeded
Dataset Version: 1
Unknown
ISO_DateTime_UTC
Vessel
Cruise_ID
Latitude
Longitude
pH_in_situ
pH_QF
Temperature
Salinity
Date
Deep-Sea DuraFET (DSD) sensor
BGC-SUMO
SBE45 MicroTSG thermosalinograph
theme
None, User defined
ISO_DateTime_UTC
ship
Cruise identfier
latitude
longitude
pH
quality flag
water temperature at measurement depth
sea surface salinity
date
featureType
BCO-DMO Standard Parameters
pH Sensor
pH Sensor
Sea-Bird SBE 45 MicroTSG Thermosalinograph
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
-145.113
-123.206
48.252
54.696
2019-06-03
2020-02-23
Eastern Subarctic Pacific near Ocean Station Papa (50°N, 145°W)
0
BCO-DMO catalogue of parameters from Underway pH of seawater sampled during CCGS John P. Tully cruises in the northeast Pacific Ocean from Vancouver Island to Station P from 2019 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/866687.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/866688.rdf
Name: Vessel
Units: unitless
Description: <p>Vessel</p>
http://lod.bco-dmo.org/id/dataset-parameter/866689.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/866690.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/866691.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/866692.rdf
Name: pH_in_situ
Units: unitless
Description: <p>In situ pH value calculated using program CO2SYSv3 with conversion of discrete pH and SUMO pH data</p>
http://lod.bco-dmo.org/id/dataset-parameter/866693.rdf
Name: pH_QF
Units: unitless
Description: <p>pH measurement quality flag where 2=acceptable; 3=questionable; 4=bad; 6=mean of replicate; 8=sample lost; 9=not sampled</p>
http://lod.bco-dmo.org/id/dataset-parameter/866694.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>Underway temperature as measured with TSG</p>
http://lod.bco-dmo.org/id/dataset-parameter/866695.rdf
Name: Salinity
Units: practical salinity unit (PSU)
Description: <p>Underway salinity as measured with TSG from the ship's intake about 5 meters below the surface</p>
http://lod.bco-dmo.org/id/dataset-parameter/866764.rdf
Name: Date
Units: unitless
Description: <p>Date of sample collection</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
27399858
https://darchive.mblwhoilibrary.org/bitstream/1912/27848/1/dataset-866582_underway-ph-data-near-line-p__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.866582.1
download
onLine
dataset
<p>Underway measurements were made aboard the <em>CCGS John P. Tully</em> during three Canadian Line P cruises (2019-2020) in the northeast Pacific from Vancouver Island to Station P (50°N, 145°W).&nbsp;<br />
Fisheries and Oceans Canada (DFO) Cruise numbers: 2019-006, 2019-008, 2020-001</p>
<p><strong><u>pH</u></strong><br />
A prototype instrument (BGC-SUMO) developed by Dr. Yui Takeshita at MBARI was plumbed into the <em>CCGS John P. Tully</em>&nbsp;seawater intake (~5 m below the surface) line in&nbsp;the wet lab. Underway in situ pH on the total hydrogen ion concentration scale was measured with an ion-sensitive field-effect transistor (ISFET) pH sensor (Deep-Sea DuraFET; Johnson et al., 2016). The instrument was powered through an isolation transformer to prevent ground loop issues. The system was polled using a LabView interface and pH measurements were made every 10 milliseconds. pH sensor data were calibrated using discrete pH samples collected from the underway line (near BGC-SUMO) during the three cruises: 2019-006, 2019-008, and 2020-001 (n= 19, n= 5, n= 5, respectively)</p>
<p><strong><u>Temperature and Salinity</u></strong><br />
Underway temperature and salinity were measured by a Sea-Bird Scientific SBE45 MicroTSG thermosalinograph located directly downstream (&lt; 10 cm) of the BGC-SUMO pH sensor that was plumbed into the <em>CCGS John P. Tully</em> seawater intake (~5 m below the surface) line in the wet lab. Underway temperature and salinity were also measured with a <em>CCGS John P. Tully</em> thermosalinograph at the seawater intake location. These data were used to correct for warming between the seawater intake and the location where the instruments were plumbed into the underway line. The <em>CCGS John P. Tully</em> thermosalinograph data can be accessed through the Canadian Line P Program data archive (<a href="https://waterproperties.ca/linep/2019-001/index.php">https://waterproperties.ca/linep/2019-001/index.php</a>). The instrument was powered through an isolation transformer to prevent ground loop issues. The system was polled using a LabView interface and pH measurements were made every 10 milliseconds.</p>
Specified by the Principal Investigator(s)
<p><strong><u>Underway pH</u></strong><br />
Discrete pH and BGC-SUMO pH data were converted from pH values measured at the BGC-SUMO TSG temperature to in situ pH values using the ship-board TSG intake temperature. This pH temperature conversion calculation was performed using the program CO2SYSv3 (<em>Lewis &amp; Wallace,</em> 1998; <em>Sharp et al.,</em> 2020; <em>van Heuven et al.,</em> 2011). An average of discrete TA samples (QF as good), also collected during these cruises, was used in the CO2SYSv3 calculations.&nbsp; The following constants were chosen for CO2SYSv3 input: K<sub>1</sub>K<sub>2</sub> of Lueker et al (2000); K<sub>SO4</sub> of Dickson (1990); KF of Perez &amp; Fraga (1987); TB of Lee (2010). The mean of pH residuals (BGC-SUMO pH – discrete pH, both at BGC-SUMO TSG temperature) was near zero for all cruises (4.5x10<sup>-07</sup>, -1.0x10<sup>-06</sup>, -3.3x10<sup>-06</sup>; for cruises 2019-006, 2019-008, 2020-001, respectively).</p>
<p><strong><u>Problem report</u></strong><br />
Underway pH measurements during the sensor warm-up phase for each cruise were given a Quality Flag (QF) of 4 or 3, determined based on comparison with in-line temperature and salinity data.&nbsp;During the return transits for cruises&nbsp;2019-006 and 2020-001, large discrepancies between&nbsp;BGC-SUMO&nbsp;and discrete pH data were observed.&nbsp;These underway pH data were assigned&nbsp;a QF = 3. Unrealistic pH data for this region (values &gt; 8.4 and &lt; 7.6) were&nbsp;also assigned&nbsp;a QF of 4. A moving mean filter with a sliding window of 200 (~2 second resolution) was applied to the pH data to identify irregular spikes, which were assigned a QF = 3. When ship TSG temperature or salinity values were missing,&nbsp;BGC-SUMO&nbsp;pH data were set to NaN.</p>
<p>&nbsp;</p>
<p>=================<br />
<strong>BCO-DMO Processing:</strong></p>
<ul>
<li>Imported data from source file "combined_SUMO_data_FORMATTED.xlsx" into the BCO-DMO data system.</li>
<li>Data file imported using missing data identifiers "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>Converted separate date and time fields 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>
<p>&nbsp;</p>
<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
Deep-Sea DuraFET (DSD) sensor
Deep-Sea DuraFET (DSD) sensor
PI Supplied Instrument Name: Deep-Sea DuraFET (DSD) sensor PI Supplied Instrument Description:pH was measured using a Deep-Sea Durafet (DSD) sensor Instrument Name: pH Sensor Instrument Short Name:pH Sensor Instrument Description: An instrument that measures the hydrogen ion activity in solutions.
The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).
BGC-SUMO
BGC-SUMO
PI Supplied Instrument Name: BGC-SUMO PI Supplied Instrument Description:A prototype instrument (BGC-SUMO; Y. Takeshita - yui@mbari.org) for measuring seawater pH on underway ships was plumbed into the CCGS John P. Tully seawater intake line Instrument Name: pH Sensor Instrument Short Name:pH Sensor Instrument Description: An instrument that measures the hydrogen ion activity in solutions.
The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).
SBE45 MicroTSG thermosalinograph
SBE45 MicroTSG thermosalinograph
PI Supplied Instrument Name: SBE45 MicroTSG thermosalinograph PI Supplied Instrument Description:Underway temperature and salinity were measured near the pH sensor by an SBE45 MicroTSG thermosalinograph Instrument Name: Sea-Bird SBE 45 MicroTSG Thermosalinograph Instrument Short Name:SBE 45 MicroTSG Instrument Description: A small externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. It is constructed of plastic and titanium to ensure long life with minimum maintenance. It may optionally be interfaced to an external SBE 38 hull temperature sensor.
Sea Bird SBE 45 MicroTSG (Thermosalinograph) Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0190/
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