http://lod.bco-dmo.org/id/dataset/986861
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
2025-10-14
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor from Jul 1 to Jul 12, 2023
2025-12-12
publication
2025-12-12
revision
Woods Hole Oceanographic Institution (WHOI BCO-DMO)
2025-12-26
publication
https://doi.org/10.26008/1912/bco-dmo.986861.1
Angela N. Knapp
Florida State 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: Knapp, A. N. (2025) Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor from Jul 1 to Jul 12, 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-12-12 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.986861.1 [access date]
STING 2 TDN and TDP concentration Dataset Description: Methods and Sampling: <p>Water column samples were collected in July 2023,&nbsp;on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor,&nbsp;using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Seawater samples for macronutrient analysis were filtered through 0.2 µm Pall Acropak Super membrane filter capsules, collected into 60 mL HDPE bottles and frozen at -20 C until analysis on land.&nbsp;</p>
<p>TDP concentrations were measured using a Shimadzu UV-1800 and a Shimadzu UV-1900i. All reagents were prepared in dedicated labware with high purity Milli-Q (&gt;18.2 MΩ cm) water. Samples were calibrated using a 6 point calibration curve with concentrations that bracketed sample concentrations. Each run included multiple Milli-Q water and reagent blanks, as well as three internal standards including adenosine triphosphate, a polyphosphate compound, glyphosate, a polyphosphonate compound, and 0.2&nbsp;µm filtered oligotrophic surface water from the Gulf to check the consistency of the TDP concentration analysis over time.</p>
<p>TDN concentrations were measured using a Thermo 42i NOx analyzer and a Teledyne T200 NOx analyzer and were calibrated with standards that bracketed the concentration range of samples. Additionally, as an internal check on the completeness of the persulfate oxidation method, DON standards were included as “unknowns” in each set of persulfate oxidation, in this case USGS 40 (L-glutamic acid) and IAEA600 (caffeine).&nbsp;</p>
<p>The detection limit for TDN concentration analysis is 0.1 µM, and detection limit for TDP concentration analysis is 0.025 µM.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2148989 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2148989
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2506248 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2506248
completed
Angela N. Knapp
Florida State University
(979) 862-5235
797 Lamar St. Dept of Oceanography, Eller O&M Room 1204
College Station
TX
77843
USA
aknapp@tamu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
CRUISE_ID
STING_ID
EVTNBR
ISO_DateTime_UTC
DATE_UTC
TIME_UTC
DATE_SHIP
TIME_SHIP
LATITUDE
LONGITUDE
PLATFORM
CASTNBR
STNNBR
TRANSECT_LOCATION
INC_NBR
INC_TREATMENT
INC_TIME
BTLNBR
DEPTH
TDP
TDP_STDEV
TDP_COUNT
TDP_FLAG
TDN
TDN_STDEV
TDN_COUNT
TDN_FLAG
Thermo 42i NOx analyzer
Teledyne T200 NOx analyzer
Trace metal clean rosette (SeaBird)
Trace metal clean pump
Custom surface pump “towfish” system
12-L Niskin-X samplers (Ocean Test Equipment)
Shimadzu UV-1800
Shimadzu UV-1900i
theme
None, User defined
Cruise identfier
sample identification
R2R event number
ISO_DateTime_UTC
date
time of day
latitude
longitude
cast type
cast
station
transect
treatment
incubation time or duration
bottle
depth
Total Dissolved Phosphorus
standard deviation
count
quality flag
Total Dissolved Nitrogen
featureType
BCO-DMO Standard Parameters
Chemiluminescence NOx Analyzer
Chemiluminescence NOx Analyzer
CTD - profiler
Pump
Pump surface
Trace Metal Bottle
UV Spectrophotometer-Shimadzu
UV Spectrophotometer-Shimadzu
instrument
BCO-DMO Standard Instruments
EN704
service
Deployment Activity
Gulf of Mexico near Florida
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.
Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
https://osprey.bco-dmo.org/project/880516
Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
<p><strong>NSF Award Abstract:</strong><br />
This project will investigate how groundwater discharge delivers important nutrients to the coastal ecosystems of the West Florida Shelf. Preliminary studies indicate that groundwater may supply both dissolved organic nitrogen (DON) and iron in this region. In coastal ecosystems like the West Florida Shelf that have very low nitrate and ammonium concentrations, DON is the main form of nitrogen available to organisms. Nitrogen cycling is strongly affected by iron availability because iron is essential for both photosynthesis and for nitrogen fixation. This study will investigate the sources and composition of DON and iron, and their influence on the coastal ecosystem. The team will sample offshore groundwater wells, river and estuarine waters, and conduct two expeditions across the West Florida Shelf in winter and summer. Investigators will participate in K-12 and outreach activities to increase awareness of the project and related science. The project will fund the work of six graduate and eight undergraduate students across five institutions, furthering NSF’s goals of education and training.</p>
<p>Motivated by preliminary observations of unexplained, tightly-correlated DON and dissolved iron concentrations across the West Florida Shelf (WFS), the proposed work will quantify the flux and isotopic signatures of submarine groundwater discharge (SGD)-derived DON and iron to the WFS, and evaluate the bioavailability of this temporally-variable source using four seasonal near-shore campaigns sampling offshore groundwater wells, estuarine, and riverine endmembers and two cross-shelf cruises. The work will evaluate whether SGD stimulates nitrogen fixation on the WFS, and the potential for the stimulated nitrogen fixation to further modify the chemistry of DON and dissolved iron in the region. The cross-shelf cruises will investigate hypothesized periods of maximum SGD and Trichodesmium abundance (June), and reduced river discharge and SGD (February), thus comparing two distinct biogeochemical regimes. The concentrations and isotopic compositions of DON and dissolved iron, molecular composition of DON, and the concentration and composition of iron-binding ligands will be characterized. Nitrogen fixation rates and Trichodesmium spp. abundance and expression of iron stress genes will be measured. Fluxes of DON and iron from SGD and rivers will be quantified with radium isotope mass balances. The impacts of SGD on nitrogen fixation and DON/ligand production will be constrained with incubations of natural phytoplankton communities with submarine groundwater amendments. Two hypotheses will be tested: 1) SGD is the dominant source of bioavailable DON and dissolved iron on the WFS, and 2) SGD-alleviation of iron stress changes the dominant Trichodesmium species on the WFS, increases nitrogen fixation rates and modifies DON and iron composition. Overall, the work will establish connections between marine nitrogen and iron cycling and evaluate the potential for coastal inputs to modify water along the WFS before export to the Atlantic Ocean. This study will thus provide a framework to consider these boundary fluxes in oligotrophic coastal systems and the relative importance of rivers and SGD as sources of nitrogen and iron in other analogous locations, such as coastal systems in Australia, India, and Africa, where nitrogen fixation and SGD have also been documented.</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>
West Florida Shelf DON and Fe
largerWorkCitation
project
eng; USA
oceans
Gulf of Mexico near Florida
-85.0283
-82.5169
26.1234
27.9937
2023-07-01
2023-07-12
Gulf of Mexico/America, West Florida Shelf
0
BCO-DMO catalogue of parameters from Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor from Jul 1 to Jul 12, 2023
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/989513.rdf
Name: CRUISE_ID
Units: unitless
Description: <p>Sampling cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/989514.rdf
Name: STING_ID
Units: unitless
Description: <p>Unique number assigned to each sampling event in STING project</p>
http://lod.bco-dmo.org/id/dataset-parameter/989515.rdf
Name: EVTNBR
Units: unitless
Description: <p>Event number; ‘NDA’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989516.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>UTC datetime when sample was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/989517.rdf
Name: DATE_UTC
Units: unitless
Description: <p>UTC date when sample was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/989518.rdf
Name: TIME_UTC
Units: unitless
Description: <p>UTC time when sample was collected; na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989519.rdf
Name: DATE_SHIP
Units: unitless
Description: <p>Local date on the ship when sample was collected in EST/EDT</p>
http://lod.bco-dmo.org/id/dataset-parameter/989520.rdf
Name: TIME_SHIP
Units: unitless
Description: <p>Local time on the ship when the sample was collected in EST/EDT; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989521.rdf
Name: LATITUDE
Units: decimal degrees
Description: <p>Position when sample was collected in decimal degrees; a positive value indicates a Northern coordinate; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989523.rdf
Name: LONGITUDE
Units: decimal degrees
Description: <p>Position when sample was collected in decimal degrees; a negative value indicates a Western coordinate; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989525.rdf
Name: PLATFORM
Units: unitless
Description: <p>Sampling system used. TMC CTD = trace metal CTD rosette; FISH = tow fish; TM PUMP = trace metal pump; INC = incubation</p>
http://lod.bco-dmo.org/id/dataset-parameter/989526.rdf
Name: CASTNBR
Units: unitless
Description: <p>Cast number; 'na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989527.rdf
Name: STNNBR
Units: unitless
Description: <p>Station number for cruises; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989528.rdf
Name: TRANSECT_LOCATION
Units: unitless
Description: <p>Cruise station number translated to a cruise transect number and position away from shore of each station within a transect ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989529.rdf
Name: INC_NBR
Units: unitless
Description: <p>Number of incubation carried out on a cruise; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989530.rdf
Name: INC_TREATMENT
Units: unitless
Description: <p>Type of treatment the incubation was subjected to; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989531.rdf
Name: INC_TIME
Units: hours
Description: <p>Number of hours the sample was collected after the incubation began; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989532.rdf
Name: BTLNBR
Units: unitless
Description: <p>CTD rosette bottle number; ‘na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989533.rdf
Name: DEPTH
Units: meters (m)
Description: <p>Sample collection depth below sea surface; 'na’ for ‘not applicable’ to that sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/989535.rdf
Name: TDP
Units: micromoles per liter (µM)
Description: <p>Concentrations of total dissolved phosphorus</p>
http://lod.bco-dmo.org/id/dataset-parameter/989536.rdf
Name: TDP_STDEV
Units: micromoles per liter (µM)
Description: <p>Standard deviation of replication total dissolved phosphorus measurements. If only 2 replicates, the difference about the mean was used to calculate error</p>
http://lod.bco-dmo.org/id/dataset-parameter/989537.rdf
Name: TDP_COUNT
Units: unitless
Description: <p>Number of TDP analytical replicates performed</p>
http://lod.bco-dmo.org/id/dataset-parameter/989538.rdf
Name: TDP_FLAG
Units: unitless
Description: <p>Quality flag for TDP measurements. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details</p>
http://lod.bco-dmo.org/id/dataset-parameter/989539.rdf
Name: TDN
Units: micromoles per liter (µM)
Description: <p>Concentrations of total dissolved nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/989540.rdf
Name: TDN_STDEV
Units: micromoles per liter (µM)
Description: <p>Standard deviation of replication total dissolved nitrogen measurements. If only 2 replicates, the difference about the mean was used to calculate error</p>
http://lod.bco-dmo.org/id/dataset-parameter/989541.rdf
Name: TDN_COUNT
Units: unitless
Description: <p>Number of TDN analytical replicates performed</p>
http://lod.bco-dmo.org/id/dataset-parameter/989542.rdf
Name: TDN_FLAG
Units: unitless
Description: <p>Quality flag for TDN measurements. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details</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
https://doi.org/10.26008/1912/bco-dmo.986861.1
download
onLine
dataset
<p>Water column samples were collected in July 2023,&nbsp;on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor,&nbsp;using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Seawater samples for macronutrient analysis were filtered through 0.2 µm Pall Acropak Super membrane filter capsules, collected into 60 mL HDPE bottles and frozen at -20 C until analysis on land.&nbsp;</p>
<p>TDP concentrations were measured using a Shimadzu UV-1800 and a Shimadzu UV-1900i. All reagents were prepared in dedicated labware with high purity Milli-Q (&gt;18.2 MΩ cm) water. Samples were calibrated using a 6 point calibration curve with concentrations that bracketed sample concentrations. Each run included multiple Milli-Q water and reagent blanks, as well as three internal standards including adenosine triphosphate, a polyphosphate compound, glyphosate, a polyphosphonate compound, and 0.2&nbsp;µm filtered oligotrophic surface water from the Gulf to check the consistency of the TDP concentration analysis over time.</p>
<p>TDN concentrations were measured using a Thermo 42i NOx analyzer and a Teledyne T200 NOx analyzer and were calibrated with standards that bracketed the concentration range of samples. Additionally, as an internal check on the completeness of the persulfate oxidation method, DON standards were included as “unknowns” in each set of persulfate oxidation, in this case USGS 40 (L-glutamic acid) and IAEA600 (caffeine).&nbsp;</p>
<p>The detection limit for TDN concentration analysis is 0.1 µM, and detection limit for TDP concentration analysis is 0.025 µM.</p>
Specified by the Principal Investigator(s)
<p>Data were flagged using the SeaDataNet quality flag scheme recommended by GEOTRACES (https://www.geotraces.org/geotraces-quality-flag-policy/)&nbsp;and described below. Notes specific to the application of these flags to this dataset are noted in brackets […].</p>
<p>0: No Quality Control: No quality control procedures have been applied to the data value. This is the initial status for all data values entering the working archive. [Not used].</p>
<p>1: Good Value: Good quality data value that is not part of any identified malfunction and has been verified as consistent with real phenomena during the quality control process.</p>
<p>2: Probably Good Value: Data value that is probably consistent with real phenomena, but this is unconfirmed or data value forming part of a malfunction that is considered too small to affect the overall quality of the data object of which it is a part. [Used when no replicate measurements were available to check the quality of the data].</p>
<p>3: Probably Bad Value: Data value recognized as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena. [Used when all replicate measurements were too high to be consistent with real phenomena].</p>
<p>4: Bad Value: An obviously erroneous data value. [Not used].</p>
<p>5: Changed Value: Data value adjusted during quality control. Best practice strongly recommends that the value before the change be preserved in the data or its accompanying metadata. [Not used].</p>
<p>6: Value Below Detection Limit: The level of the measured phenomenon was less than the limit of detection (LOD) for the method employed to measure it. The accompanying value is the detection limit for the technique or zero if that value is unknown. [Values below detection are reported as 0.00 µM in the data file. Detection limits for each parameter are listed in the “methods and sampling” section of this form].</p>
<p>7: Value in Excess: The level of the measured phenomenon was too large to be quantified by the technique employed to measure it. The accompanying value is the measurement limit for the technique. [Not used].</p>
<p>8: Interpolated Value: This value has been derived by interpolation from other values in the data object. [Not used].</p>
<p>9: Missing Value: The data value is missing. Any accompanying value will be a magic number representing absent data [When sample was not collected the notation ‘na’ for ‘not applicable’ was used; when sample collected but there is no result for this parameter, the notation ‘NDA’ for ‘no data available’ was used].</p>
<p>A: Value Phenomenon Uncertain: There is uncertainty in the description of the measured phenomenon associated with the value such as chemical species or biological entity. [Not used.]</p>
Specified by the Principal Investigator(s)
- Imported "BCO-DMO_STING2_TDN_TDP_Conc_v2.xlsx" into the BCO-DMO system
- Reformatted 'SO_DateTime_UTC' to remove '+00:00' from the end and replace with a 'Z' for consistency
- Exported file as "986861_v1_sting2_tdn_tdp.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
Thermo 42i NOx analyzer
Thermo 42i NOx analyzer
PI Supplied Instrument Name: Thermo 42i NOx analyzer PI Supplied Instrument Description:TDN concentrations were measured using a Thermo 42i NOx analyzer and a Teledyne T200 NOx analyzer and were calibrated with standards that bracketed the concentration range of samples. Instrument Name: Chemiluminescence NOx Analyzer Instrument Short Name: Instrument Description: The chemiluminescence method for gas analysis of oxides of nitrogen relies on the measurement of light produced by the gas-phase titration of nitric oxide and ozone. A chemiluminescence analyzer can measure the concentration of NO/NO2/NOX.
One example is the Teledyne Model T200: https://www.teledyne-api.com/products/nitrogen-compound-instruments/t200
Teledyne T200 NOx analyzer
Teledyne T200 NOx analyzer
PI Supplied Instrument Name: Teledyne T200 NOx analyzer PI Supplied Instrument Description:TDN concentrations were measured using a Thermo 42i NOx analyzer and a Teledyne T200 NOx analyzer and were calibrated with standards that bracketed the concentration range of samples. Instrument Name: Chemiluminescence NOx Analyzer Instrument Short Name: Instrument Description: The chemiluminescence method for gas analysis of oxides of nitrogen relies on the measurement of light produced by the gas-phase titration of nitric oxide and ozone. A chemiluminescence analyzer can measure the concentration of NO/NO2/NOX.
One example is the Teledyne Model T200: https://www.teledyne-api.com/products/nitrogen-compound-instruments/t200
Trace metal clean rosette (SeaBird)
Trace metal clean rosette (SeaBird)
PI Supplied Instrument Name: Trace metal clean rosette (SeaBird) PI Supplied Instrument Description:Water column samples were collected using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Instrument Name: CTD - profiler Instrument Short Name: Instrument Description: The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.
This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
Trace metal clean pump
Trace metal clean pump
PI Supplied Instrument Name: Trace metal clean pump PI Supplied Instrument Description:Water column samples were collected using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Instrument Name: Pump Instrument Short Name: Instrument Description: A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps
Custom surface pump “towfish” system
Custom surface pump “towfish” system
PI Supplied Instrument Name: Custom surface pump “towfish” system PI Supplied Instrument Description:Water column samples were collected using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Instrument Name: Pump surface Instrument Short Name:Pump surface Instrument Description: A source of uncontaminated near-surface seawater pumped onto the deck of the research vessel that can be sampled and analyzed. This pumped seawater supply is from an over-the-side pumping system, and is therefore different from the vessel underway seawater system. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/31/
12-L Niskin-X samplers (Ocean Test Equipment)
12-L Niskin-X samplers (Ocean Test Equipment)
PI Supplied Instrument Name: 12-L Niskin-X samplers (Ocean Test Equipment) PI Supplied Instrument Description:Water column samples were collected using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Instrument Name: Trace Metal Bottle Instrument Short Name:TM Bottle Instrument Description: Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Shimadzu UV-1800
Shimadzu UV-1800
PI Supplied Instrument Name: Shimadzu UV-1800 PI Supplied Instrument Description:TDP concentrations were measured using a Shimadzu UV-1800 and a Shimadzu UV-1900i. Instrument Name: UV Spectrophotometer-Shimadzu Instrument Short Name:UV Spectrophotometer-Shimadzu Instrument Description: The Shimadzu UV Spectrophotometer is manufactured by Shimadzu Scientific Instruments (ssi.shimadzu.com). Shimadzu manufacturers several models of spectrophotometer; refer to dataset for make/model information. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Shimadzu UV-1900i
Shimadzu UV-1900i
PI Supplied Instrument Name: Shimadzu UV-1900i PI Supplied Instrument Description:TDP concentrations were measured using a Shimadzu UV-1800 and a Shimadzu UV-1900i. Instrument Name: UV Spectrophotometer-Shimadzu Instrument Short Name:UV Spectrophotometer-Shimadzu Instrument Description: The Shimadzu UV Spectrophotometer is manufactured by Shimadzu Scientific Instruments (ssi.shimadzu.com). Shimadzu manufacturers several models of spectrophotometer; refer to dataset for make/model information. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Cruise: EN704
EN704
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel
EN704
Angela N. Knapp
Florida State University
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel