http://lod.bco-dmo.org/id/dataset/828183
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
2020-11-02
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Iron, manganese and nutrient data from four cruises in the eastern tropical North Pacific, 2012 to 2018
2020-11-02
publication
2020-11-02
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-11-04
publication
https://doi.org/10.26008/1912/bco-dmo.828183.1
James W. Moffett
University of Southern California
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: Moffett, J. W. (2020) Iron, manganese and nutrient data from four cruises in the eastern tropical North Pacific, 2012 to 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-11-02 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.828183.1 [access date]
Iron and manganese in the ETNP Dataset Description: Methods and Sampling: <p>Samples were collected and analyzed as described in Bolster et al. Briefly, samples were collected from a trace-metal clean rosette, sampled under filtered nitrogen pressure through&nbsp;acid-washed 0.2 μm polyethersulfone filters into acid-washed low-density polyethylene bottles. Iron(II) was measured using luminol chemiluminescence, using diethylenetriaminepentaacetic acid as a masking ligand to correct for interferents (Bolster et al., 2018). Total dissolved metal samples were acidified with Optima grade hydrochloric acid (final concentration 20 mM) and stored at room temperature for several months. Dissolved iron and manganese were determined using inductively coupled plasma mass spectrometry with an offline preconcentration system.&nbsp;</p>
<p>Additional hydrographic and nutrient data is provided for some samples. Temperature, salinity, and oxygen were measured using a CTD, and measurements of phosphate, nitrate, and nitrite were performed using a nutrient auto-analyzer onboard, as described in Selden et al.</p>
<p>Trace metal samples were collected in 5 L Teflon-coated external spring “Niskin-type” bottles (Ocean Test Equipment) mounted on a powder-coated trace metal clean rosette (Sea-Bird Electronics). Samples were preconcentrated using a seaFAST system (ESI), and quantified using isotope dilution for iron and standard additions for manganese. Analyses were performed on an inductively coupled mass spectrometer in medium resolution mode (Thermo Element 2), using indium as an internal standard.&nbsp;Trace metal quantification was performed using Microsoft Excel 2016.</p>
<p>Temperature, salinity, and oxygen were determined from a Sea-Bird SBE 11plus CTD and a model 43 dissolved oxygen sensor, attached to a sampling rosette for dissolved nutrient concentrations. Nutrients were measured using an Astoria‐Pacific nutrient autoanalyzer.</p>
<p>A number of samples have no measured values for total dissolved iron and manganese, either because sample collection was not logistically possible, or because some of the samples were lost in transit.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1356056 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1356056
Funding provided by NSF Division of Environmental Biology (NSF DEB) Award Number: DEB-1542240 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1542240
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1459584 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1459584
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1636332 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1636332
completed
James W. Moffett
University of Southern California
213-740-5626
Biological Sciences, Earth Sciences, and Civil and Environmental Engineering 3616 Trousdale Pkwy
Los Angeles
CA
90089
USA
jmoffett@usc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise
station
cast
ISO_DateTime_UTC
depth
latitude
longitude
fe2
fe
mn
temp
salinity
oxygen
no3
no2
Thermo Element 2
Astoria‐Pacific nutrient autoanalyzer
theme
None, User defined
ship
station
cast
ISO_DateTime_UTC
depth
latitude
longitude
Iron
Manganese
water temperature at measurement depth
salinity
dissolved Oxygen
Nitrate
Nitrite
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird SBE 911plus
Inductively Coupled Plasma Mass Spectrometer
Nutrient Autoanalyzer
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Trace Metal Bottle
instrument
BCO-DMO Standard Instruments
RR1805
TN278
SKQ201617S
RB1603
service
Deployment Activity
Eastern Tropical North Pacific Ocean 20N-14N, 105W-130W
Eastern Tropical North Pacific Oxygen Deficient Zone
Eastern Tropical North Pacific Ocean
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.
Development and Intercomparison of Methodologies to Measure Dissolved Ferrous Iron in Seawater
https://osprey.bco-dmo.org/project/731403
Development and Intercomparison of Methodologies to Measure Dissolved Ferrous Iron in Seawater
<p>NSF Award Abstract:</p>
<p>The trace metal iron is a key micronutrient throughout the oceans that plays an important role in regulating primary production. Iron (chemical symbol Fe) can exist in different ionization states in the environment, primarily as the reduced form Fe(II) and the oxidized form Fe(III), which impacts its chemical behavior within the water column, and ultimately the ability of researchers to accurately measure its abundance. There is an urgent need in the chemical oceanography community for accurate measurements of Fe(II) in the water column, as currently used methods may overestimate concentrations in water samples collected from certain depths. In this study, researchers from the University of Southern California will significantly redevelop an underutilized methodology to measure Fe(II), and carry out an evaluation and inter-comparison between the two methodologies. This work will enable the refinement of estimates of Fe(II) concentration, present a robust methodology for future use, and clarify conditions where the current methodology can be used effectively. This project will involve strong undergraduate research opportunities, and the research will be conducted in collaboration with an international researcher from India.</p>
<p>Fe(II) is thermodynamically unstable in seawater in the presence of oxygen or nitrate, yet its presence has been reported both in surface waters and in oxygen minimum zones. A rigorous assessment of Fe(II) measurements is important because its chemistry and bioavailability are so different than Fe(III). Fe(II) forms weak complexes, is weakly hydrolyzed and highly soluble in seawater. Fe(III) forms strong complexes, is sparingly soluble and strongly hydrolyzed. The presence of even a modest fraction of Fe as Fe(II) under Fe-limited conditions could increase bioavailability by orders of magnitude. The most widely used methodology to determine Fe(II) at nanomolar to sub-nanomolar levels involves the Fe(II) catalyzed oxidation of luminol, a chemiluminescent (CL) reaction. There are potential artifacts with this methodology, especially in the euphotic zone, where other reduced species might interfere. Researchers will develop a new, modified version of a published alternative method to CL involving the preconcentration of Fe(II) complexed by a synthetic chelator. While this alternative method is prone to artifacts and contamination that has limited its value in the open ocean, new approaches create a plausible path to an accurate and sensitive protocol that is independent of the luminol method. Following the new method development, this project will implement inter-comparisons with the CL approach, which will be conducted in the laboratory, in an anoxic mesocosm system, at a coastal time-series station off the California coast, and in the Eastern Tropical North Pacific.</p>
Ferrous iron in seawater
largerWorkCitation
project
The role of cryptic nutrient cycling within sinking particles on trace element transport in oxygen minimum zones
https://osprey.bco-dmo.org/project/746076
The role of cryptic nutrient cycling within sinking particles on trace element transport in oxygen minimum zones
<p><em>NSF Award Abstract:</em><br />
The major process controlling the internal cycling of biologically active trace metals in the oceans is through uptake onto and remineralization from sinking particles. Uptake can occur through active biological uptake into living cells as micronutrients, or chemical adsorption onto sinking materials. This latter process is often referred to as scavenging. The relative importance of these processes is often unclear, especially for elements that are both biologically active and also "particle reactive." The latter characteristic is associated with sparing solubility in seawater and the formation of strong complexes with surface sites, with examples such as iron. Recent evidence suggests that the simplistic view of a sinking particle as a passive surface for metal complexation may require some revision. Investigators James Moffett and Seth John propose to study the chemistry of transition metals within large sinking particles and the resultant effects on metal biogeochemical cycling. They will collaborate with a group at the University of Washington, recently funded to study the microbiology and molecular biology of these particles. The central hypothesis of this project is that reducing microbial microenvironments within large particles support high rates of nitrogen and sulfur cycling, greatly enhancing the particles' influence on metal chemistry. The investigators will study these processes in the Eastern Tropical North Pacific Oxygen Minimum Zone (OMZ). This regime was selected because of the wide range of redox conditions in the water column, and strong preliminary evidence that microenvironments within sinking particles have major biogeochemical impacts.</p>
<p>
The primary objective is to investigate the interactions of metals with particles containing microenvironments that are more highly reducing than the surrounding waters. Such microenvironments arise when the prevailing terminal electron acceptor (oxygen, or nitrate in oxygen minimum zones) becomes depleted and alternative terminal electron acceptors are utilized. Within reducing microenvironments metal redox state and coordination chemistry are different from the bulk water column, and these microenvironments may dominate metal particle interactions. For example, reduction of sulfate to sulfide could bind metals that form strong sulfide complexes, such as cadmium and zinc, processes previously thought to be confined to sulfidic environments. Reducing microenvironments may account for the production of reduced species such as iron(II), even when their formation is thermodynamically unfavorable in the bulk water column. Tasks include observational characterization of dissolved and particulate trace metals and stable isotopes in the study area, sampling and in situ manipulation of particles using large-dimension sediment traps, shipboard experimental incubations under a range of redox conditions, and modeling, providing insight from microscopic to global scales. The metal chemistry data will be interpreted within a rich context of complimentary data including rates of nitrogen and sulfur cycling, phylogenetics and proteomic characterization of the concentration of key enzymes. Broader impacts include training of a postdoctoral scientist, international collaborations with Mexican scientists, and involvement of undergraduate students in the research.</p>
OMZ Nutrient Cycling
largerWorkCitation
project
eng; USA
oceans
Eastern Tropical North Pacific Ocean 20N-14N, 105W-130W; Eastern Tropical North Pacific Oxygen Deficient Zone; Eastern Tropical North Pacific Ocean
-113.00043
-99.00134
14.99976
24.04018
2012-03-26
2018-04-17
From projects that focused on the following 2 locations: 1. Southern Mexico; Catalna Island USA 2. Eastern Tropical North Pacific
0
BCO-DMO catalogue of parameters from Iron, manganese and nutrient data from four cruises in the eastern tropical North Pacific, 2012 to 2018
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/828200.rdf
Name: cruise
Units: unitless
Description: <p>ship for sampling; ship name (brown; sikuliaq; revelle; thompson)</p>
http://lod.bco-dmo.org/id/dataset-parameter/828201.rdf
Name: station
Units: unitless
Description: <p>station on cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/828202.rdf
Name: cast
Units: unitless
Description: <p>cast on cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/828203.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>UTC date and time; formatted as yyyy-mm-ddTHH:MM:SSZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/828204.rdf
Name: depth
Units: meters
Description: <p>sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/828205.rdf
Name: latitude
Units: decimal degrees
Description: <p>station latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/828206.rdf
Name: longitude
Units: decimal degrees
Description: <p>station longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/828207.rdf
Name: fe2
Units: picomoles/liter
Description: <p>dissolved iron(II) concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/828208.rdf
Name: fe
Units: nanomoles/liter
Description: <p>total dissolved iron concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/828209.rdf
Name: mn
Units: nanomoles/liter
Description: <p>total dissolved manganese concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/828210.rdf
Name: temp
Units: degrees Celsius
Description: <p>water temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/828211.rdf
Name: salinity
Units: practical salinity units (PSU)
Description: <p>water salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/828212.rdf
Name: oxygen
Units: micromoles/liter
Description: <p>dissolved oxygen concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/828213.rdf
Name: no3
Units: micromoles/liter
Description: <p>dissolved nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/828214.rdf
Name: no2
Units: micromoles/liter
Description: <p>dissolved nitrite concentration</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
25247
https://darchive.mblwhoilibrary.org/bitstream/1912/26365/1/dataset-828183_iron-and-manganese-etnp__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.828183.1
download
onLine
dataset
<p>Samples were collected and analyzed as described in Bolster et al. Briefly, samples were collected from a trace-metal clean rosette, sampled under filtered nitrogen pressure through&nbsp;acid-washed 0.2 μm polyethersulfone filters into acid-washed low-density polyethylene bottles. Iron(II) was measured using luminol chemiluminescence, using diethylenetriaminepentaacetic acid as a masking ligand to correct for interferents (Bolster et al., 2018). Total dissolved metal samples were acidified with Optima grade hydrochloric acid (final concentration 20 mM) and stored at room temperature for several months. Dissolved iron and manganese were determined using inductively coupled plasma mass spectrometry with an offline preconcentration system.&nbsp;</p>
<p>Additional hydrographic and nutrient data is provided for some samples. Temperature, salinity, and oxygen were measured using a CTD, and measurements of phosphate, nitrate, and nitrite were performed using a nutrient auto-analyzer onboard, as described in Selden et al.</p>
<p>Trace metal samples were collected in 5 L Teflon-coated external spring “Niskin-type” bottles (Ocean Test Equipment) mounted on a powder-coated trace metal clean rosette (Sea-Bird Electronics). Samples were preconcentrated using a seaFAST system (ESI), and quantified using isotope dilution for iron and standard additions for manganese. Analyses were performed on an inductively coupled mass spectrometer in medium resolution mode (Thermo Element 2), using indium as an internal standard.&nbsp;Trace metal quantification was performed using Microsoft Excel 2016.</p>
<p>Temperature, salinity, and oxygen were determined from a Sea-Bird SBE 11plus CTD and a model 43 dissolved oxygen sensor, attached to a sampling rosette for dissolved nutrient concentrations. Nutrients were measured using an Astoria‐Pacific nutrient autoanalyzer.</p>
<p>A number of samples have no measured values for total dissolved iron and manganese, either because sample collection was not logistically possible, or because some of the samples were lost in transit.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing Notes:</strong><br />
-&nbsp;data submitted in csv file "ferrous_iron_seawater_withdates.csv<br />
-&nbsp;added conventional header with dataset name, PI name, version date<br />
-&nbsp;renamed column&nbsp;time_UTC to&nbsp;ISO_DateTime_UTC and formatted as yyyy-mm-ddTHH:MM:SSZ<br />
- sorted records by&nbsp;ISO_DateTime_UTC and depth<br />
- records were sorted by date<br />
- reduced precision of&nbsp;fe, mn, temp, salinity, oxygen, no3, and no2 tp&nbsp;3 digits</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
PI Supplied Instrument Name: PI Supplied Instrument Description:Used to measure temperature, salinity, and depth. Instrument Name: CTD Sea-Bird SBE 911plus Instrument Short Name:CTD SBE 911plus Instrument Description: The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/
Thermo Element 2
Thermo Element 2
PI Supplied Instrument Name: Thermo Element 2 Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
Astoria‐Pacific nutrient autoanalyzer
Astoria‐Pacific nutrient autoanalyzer
PI Supplied Instrument Name: Astoria‐Pacific nutrient autoanalyzer Instrument Name: Nutrient Autoanalyzer Instrument Short Name:Nutrient Autoanalyzer Instrument Description: Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
PI Supplied Instrument Name: PI Supplied Instrument Description:Used to measure oxygen concentrations Instrument Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor Instrument Short Name:SBE-43 DO Instrument Description: The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/
PI Supplied Instrument Name: PI Supplied Instrument Description:5 L Teflon-coated external spring “Niskin-type” bottles (Ocean Test Equipment) 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/
Cruise: RR1805
RR1805
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR1805
Richard Keil
University of Washington
Cruise: TN278
TN278
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel
TN278
Allan Devol
University of Washington
Cruise: SKQ201617S
SKQ201617S
R/V Sikuliaq
Community Standard Description
International Council for the Exploration of the Sea
R/V Sikuliaq
vessel
SKQ201617S
Gabrielle Rocap
University of Washington
Cruise: RB1603
RB1603
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel
RB1603
Margaret Mulholland
Old Dominion University
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel
R/V Sikuliaq
Community Standard Description
International Council for the Exploration of the Sea
R/V Sikuliaq
vessel
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel