http://lod.bco-dmo.org/id/dataset/817259
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
2020-06-30
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Concentrations of dissolved micronutrient trace metals (Fe, Zn, Ni, Cu, Cd, Pb, Mn) in seawater, sea ice, and melt ponds collected during the US GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015
2021-04-15
publication
2021-04-15
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-07-01
publication
https://doi.org/10.26008/1912/bco-dmo.817259.1
Jessica N. Fitzsimmons
Texas A&M University
principalInvestigator
Robert M. Sherrell
Rutgers 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: Fitzsimmons, J. N., Jensen, L. T., Sherrell, R. M. (2021) Concentrations of dissolved micronutrient trace metals (Fe, Zn, Ni, Cu, Cd, Pb, Mn) in seawater, sea ice, and melt ponds collected during the US GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2021-04-15 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.817259.2 [access date]
Concentrations of dissolved micronutrient trace metals (Fe, Zn, Ni, Cu, Cd, Pb, Mn) in seawater, sea ice, and melt ponds Dataset Description: <p>Concentrations of dissolved micronutrient trace metals (Fe, Zn, Ni, Cu, Cd, Pb, Mn) in seawater, sea ice, and melt ponds&nbsp;collected on&nbsp;the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015.</p>
<p>These data have been published in the following:<br />
Marsay et al., 2018 – Melt pond metal concentrations<br />
Kadko et al., 2019 – Surface seawater metal concentrations<br />
Jensen et al., 2019 – Dissolved Zn seawater concentrations<br />
Zhang et al., 2019 – Dissolved Cd seawater concentrations<br />
Charette et al., 2020 – Upper ocean dissolved metal concentrations<br />
Jensen, 2020 (PhD Dissertation)</p> Methods and Sampling: <p>All trace metal-clean seawater samples in this dataset were collected following the prescribed US GEOTRACES protocol ("GEOTRACES cookbook": for more information see (Cutter et al., 2010; Cutter and Bruland, 2012)). Briefly, 24 Teflon-coated, acid-cleaned and preconditioned GO-FLO bottles were deployed on an epoxy-coated aluminum rosette and were tripped on ascent at 3 m/min. Once on deck, bottles were immediately capped with plastic shower caps on both ends to reduce contamination and subsequently kept in a clean sampling van under positive-pressure, HEPA-filtered air. All handling and subsampling was performed exclusively by designated, trace metal-clean personnel to preserve homogeneity and further reduce contamination.</p>
<p>During sampling for the GO-Flo samples, salinity and nutrient (unfiltered) samples were taken first, and then all Go-Flo bottles were pressurized to ~0.7 atm with HEPA-filtered air. Each bottle was fitted with an acid-cleaned and seawater-preconditioned 0.2 um AcroPak-200 capsule filter (Pall), and at least 500 mL was passed through each filter to rinse. Samples were collected in acid-cleaned (hydrochloric acid, 1 M (Fitzsimmons and Boyle, 2012)) LDPE bottles (Nalgene) after three 10% rinses of the bottle, cap, and threads and filled to the shoulder or as volume allowed.</p>
<p>In the absence of sea ice, surface samples were collected in trace metal clean fashion by taking a small boat upstream of the ship. The small boat was pointed into the oncoming current to sample "uncontaminated water" as it passed the boat, and a trained trace metal personnel wearing trace metal clean gloves and plastic sleeves submerged an acid-cleaned carboy under the water surface from the bow of the boat, always keeping the carboy pointed into the oncoming water. The carboy was immediately capped and bagged for transit back to the ship, where it was immediately filtered (0.2 um, Acropak-200) and sub-sampled into individual bottles, including our acid-clean 250 mL LDPE bottles.</p>
<p>A small subset of samples from designated "ice stations" (Stations 31, 33, 39, 43) were collected under the ice (approx. 1, 5, and 20 m) after the ice was drilled with a polypropylene/titanium trace metal coring system. Sampling was done using a polypropylene, battery-powered motor centrifugal pump with ½ inch FEP-lined Tygon tubing. Samples were collected and filtered (0.2 um, Acropak-200) into a 25 L acid-cleaned carboy and then sub-sampled back on the ship, including into our acid-clean 250 mL LDPE bottles, within 3 hours of collection.</p>
<p>At these same "ice stations", melt pond samples were collected (Marsay et al., 2018) by clearing surface snow with an acid-cleaned polyethylene shovel and then using a polyethylene/titanium trace metal coring system to drill through the upper ice. Melt pond water was pumped using a battery-powered polyethylene pump through pre-cleaned C-flex tubing into a pre-cleaned LDPE carboy. The melt pond sample in this carboy was filtered and sub-sampled into individual bottles, including our acid-clean 250 mL LDPE bottles, within 3 hours of collection.</p>
<p>Subsequently, all samples were acidified under clean air conditions to pH~2 with 0.012 M HCl (Optima, Fisher Scientific) within 1 week of sample collection and stored at room temperature until analyzed.</p>
<p>At least 9 months after acidification, samples were analyzed for trace metal (Fe, Ni, Cu, Zn, Pb, Cd, Mn) concentrations at Texas A&amp;M University after pre-concentration on a SeaFAST-pico system (Elemental Scientific Inc.). This method follows a modified version of Lagerström et al. (2013) and is described completely for all elements in Jensen et al. (2020). Briefly, 10 mL of acidified seawater sample was weighed and then spiked with an isotope mixture containing 57Fe, 62Ni, 65Cu, 68Zn, 206Pb, and 111Cd. The mixture was then automatically loaded into the SeaFAST system. Monoisotopic metals such as Mn were measured via a 6-point standard curve using standards made up in low-metal seawater (maintained in-house) such that Mn concentrations spanned 0 to 10 nmol/kg; these standard curves were each run through the SeaFAST twice (once to start and once to end each run) as samples. The SeaFAST method buffers the acidified (pH~2) sample with a ~5.90 N ammonium acetate buffer (Optima, Fisher Scientific) to pH ~6.5 and loads the buffered mixture onto a pre-cleaned column containing Nobias PA1 resin (Sohrin et al., 2008). Each sample is then back-eluted with a solution of 10% (v/v) nitric acid and 1 ppb In (Optima, Fisher Scientific) to yield 400 uL, representing a 25-fold pre-concentration of each trace metal. Within days, each eluent is analyzed in low (204Pb, 206Pb, and 111Cd, 114Cd, 115In) and medium resolution (55Mn, 56Fe, 57Fe, 60Ni, 62Ni, 63Cu, 65Cu, 66Zn, 68Zn, 115In) on a Thermo Element XR high resolution ICP-MS in the Ken Williams Radiogenic Facility in the College of Geosciences at Texas A&amp;M University.</p>
<p>Each sample run included ~80 aliquots from the SeaFAST. Every 10 SeaFAST samples on the XR, pure 10% (v/v) nitric with 1 ppb of 115In was run to extract a potential instrument blank coming from the instrument itself. Prior to running on the ICP-MS, the machine was “cleaned” with this mixture as a precaution against contamination from other samples, in addition to using a separate set of cones, nebulizer, spray chamber, and sample probe for SeaFAST samples only.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1713677 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1713677
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1434493 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1434493
completed
Jessica N. Fitzsimmons
Texas A&M University
979-845-5137
3146 TAMU O&M 403AB
College Station
TX
77843
USA
jessfitz@tamu.edu
pointOfContact
Robert M. Sherrell
Rutgers University
848-932-3403
Rutgers Inorganic Analytical Laboratory (RIAL) 71 Dudley Rd
New Brunswick
NJ
08901-8521
USA
sherrell@marine.rutgers.edu
pointOfContact
asNeeded
Dataset Version: 2
Unknown
Station_ID
Start_Date_UTC
Start_Time_UTC
Start_ISO_DateTime_UTC
End_Date_UTC
End_Time_UTC
End_ISO_DateTime_UTC
Start_Latitude
Start_Longitude
End_Latitude
End_Longitude
Event_ID
Sample_ID
Sample_Depth
Fe_D_CONC_BOAT_PUMP_seyj5m
SD1_Fe_D_CONC_BOAT_PUMP_seyj5m
Flag_Fe_D_CONC_BOAT_PUMP_seyj5m
Fe_D_CONC_BOTTLE_mbve6p
SD1_Fe_D_CONC_BOTTLE_mbve6p
Flag_Fe_D_CONC_BOTTLE_mbve6p
Fe_D_CONC_MELTPOND_PUMP_aovig3
SD1_Fe_D_CONC_MELTPOND_PUMP_aovig3
Flag_Fe_D_CONC_MELTPOND_PUMP_aovig3
Fe_D_CONC_SUBICE_PUMP_xw9ez2
SD1_Fe_D_CONC_SUBICE_PUMP_xw9ez2
Flag_Fe_D_CONC_SUBICE_PUMP_xw9ez2
Zn_D_CONC_BOAT_PUMP_sr4ksq
SD1_Zn_D_CONC_BOAT_PUMP_sr4ksq
Flag_Zn_D_CONC_BOAT_PUMP_sr4ksq
Zn_D_CONC_BOTTLE_duv8lf
SD1_Zn_D_CONC_BOTTLE_duv8lf
Flag_Zn_D_CONC_BOTTLE_duv8lf
Zn_D_CONC_MELTPOND_PUMP_6arsth
SD1_Zn_D_CONC_MELTPOND_PUMP_6arsth
Flag_Zn_D_CONC_MELTPOND_PUMP_6arsth
Zn_D_CONC_SUBICE_PUMP_iiplby
SD1_Zn_D_CONC_SUBICE_PUMP_iiplby
Flag_Zn_D_CONC_SUBICE_PUMP_iiplby
Ni_D_CONC_BOAT_PUMP_6tq9f5
SD1_Ni_D_CONC_BOAT_PUMP_6tq9f5
Flag_Ni_D_CONC_BOAT_PUMP_6tq9f5
Ni_D_CONC_BOTTLE_zb891m
SD1_Ni_D_CONC_BOTTLE_zb891m
Flag_Ni_D_CONC_BOTTLE_zb891m
Ni_D_CONC_MELTPOND_PUMP_cjc37u
SD1_Ni_D_CONC_MELTPOND_PUMP_cjc37u
Flag_Ni_D_CONC_MELTPOND_PUMP_cjc37u
Ni_D_CONC_SUBICE_PUMP_jwng6k
SD1_Ni_D_CONC_SUBICE_PUMP_jwng6k
Flag_Ni_D_CONC_SUBICE_PUMP_jwng6k
Cu_D_CONC_BOAT_PUMP_dxalhy
SD1_Cu_D_CONC_BOAT_PUMP_dxalhy
Flag_Cu_D_CONC_BOAT_PUMP_dxalhy
Cu_D_CONC_BOTTLE_fnh92g
SD1_Cu_D_CONC_BOTTLE_fnh92g
Flag_Cu_D_CONC_BOTTLE_fnh92g
Cu_D_CONC_MELTPOND_PUMP_nrdn3k
SD1_Cu_D_CONC_MELTPOND_PUMP_nrdn3k
Flag_Cu_D_CONC_MELTPOND_PUMP_nrdn3k
Cu_D_CONC_SUBICE_PUMP_nlsreh
SD1_Cu_D_CONC_SUBICE_PUMP_nlsreh
Flag_Cu_D_CONC_SUBICE_PUMP_nlsreh
Cd_D_CONC_BOAT_PUMP_gn8aeu
SD1_Cd_D_CONC_BOAT_PUMP_gn8aeu
Flag_Cd_D_CONC_BOAT_PUMP_gn8aeu
Cd_D_CONC_BOTTLE_q5wtaz
SD1_Cd_D_CONC_BOTTLE_q5wtaz
Flag_Cd_D_CONC_BOTTLE_q5wtaz
Cd_D_CONC_MELTPOND_PUMP_uqcvgj
SD1_Cd_D_CONC_MELTPOND_PUMP_uqcvgj
Flag_Cd_D_CONC_MELTPOND_PUMP_uqcvgj
Cd_D_CONC_SUBICE_PUMP_tsxyvz
SD1_Cd_D_CONC_SUBICE_PUMP_tsxyvz
Flag_Cd_D_CONC_SUBICE_PUMP_tsxyvz
Pb_D_CONC_BOAT_PUMP_ivc9dz
SD1_Pb_D_CONC_BOAT_PUMP_ivc9dz
Flag_Pb_D_CONC_BOAT_PUMP_ivc9dz
Pb_D_CONC_BOTTLE_4csho6
SD1_Pb_D_CONC_BOTTLE_4csho6
Flag_Pb_D_CONC_BOTTLE_4csho6
Pb_D_CONC_MELTPOND_PUMP_bhefxy
SD1_Pb_D_CONC_MELTPOND_PUMP_bhefxy
Flag_Pb_D_CONC_MELTPOND_PUMP_bhefxy
Pb_D_CONC_SUBICE_PUMP_g778y2
SD1_Pb_D_CONC_SUBICE_PUMP_g778y2
Flag_Pb_D_CONC_SUBICE_PUMP_g778y2
Mn_D_CONC_BOAT_PUMP_qcoz2h
SD1_Mn_D_CONC_BOAT_PUMP_qcoz2h
Flag_Mn_D_CONC_BOAT_PUMP_qcoz2h
Mn_D_CONC_BOTTLE_xxmo2v
SD1_Mn_D_CONC_BOTTLE_xxmo2v
Flag_Mn_D_CONC_BOTTLE_xxmo2v
Mn_D_CONC_MELTPOND_PUMP_6uncit
SD1_Mn_D_CONC_MELTPOND_PUMP_6uncit
Flag_Mn_D_CONC_MELTPOND_PUMP_6uncit
Mn_D_CONC_SUBICE_PUMP_1umris
SD1_Mn_D_CONC_SUBICE_PUMP_1umris
Flag_Mn_D_CONC_SUBICE_PUMP_1umris
GO-FLO bottles
titanium trace metal coring system
SeaFAST pico, Elemental Scientific Inc.
Element XR high-resolution inductively coupled plasma mass spectrometer (HR-ICP-MS)
centrifugal pump; polyethylene pump
theme
None, User defined
station
date
time of day
ISO_DateTime_UTC
latitude
longitude
event
sample identification
depth
trace metal concentration
quality flag
featureType
BCO-DMO Standard Parameters
GO-FLO Bottle
Ice Corer
Inductively Coupled Plasma Mass Spectrometer
Inductively Coupled Plasma Mass Spectrometer
Pump
instrument
BCO-DMO Standard Instruments
HLY1502
service
Deployment Activity
Western Arctic 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.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
U.S. Arctic GEOTRACES Study (GN01)
https://www.geotraces.org/
U.S. Arctic GEOTRACES Study (GN01)
<p><em>Description from NSF award abstract:</em><br />
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.</p>
<p>As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.</p>
U.S. GEOTRACES Arctic
largerWorkCitation
project
GEOTRACES Arctic section: Dissolved micronutrient trace metal distributions and size partitioning
https://osprey.bco-dmo.org/project/787555
GEOTRACES Arctic section: Dissolved micronutrient trace metal distributions and size partitioning
<p><em>NSF Award Abstract:</em><br />
In this project, investigators participating in the 2015 U.S. GEOTRACES Arctic expedition will measure the concentrations of iron, manganese, zinc, copper, cadmium, and nickel from a variety of seawater and ice samples in the Western Arctic Ocean. These are commonly referred to as 'micronutrients' because they are present in the ocean in extremely low concentrations and because they are essential for marine organisms. In common with other national initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Some trace elements are essential to life, others are known biological toxins, and still others are important because they can be used as tracers of a variety of physical, chemical, and biological processes in the sea. The six trace elements to be measured in this study are arguably the most important bioactive trace elements in the oceans, and their measurement will provide key information on biological and physical processes in the Arctic. This project will be carried out under the direction of a postdoctoral researcher, providing a unique professional development opportunity for an early career scientist. In addition, the research will involve the training of an undergraduate researcher, and provide public outreach opportunities to K-12 teachers and students, and indigenous populations in Alaska.</p>
<p>The six micronutrients to be measured under this project have all been identified as key trace elements for the GEOTRACES Program. This research will allow rigorous testing of the Arctic physical and biological processes, many of which are already undergoing fundamental changes as a result of climate change, that control the inputs and fate of key micronutrient metals in the Arctic Ocean. Colloidal distributions are specifically targeted in order to derive additional information on the unique physicochemical form and reactivity of distinct dissolved metal pools. The project will also explore the role of melting sea ice in driving near-surface concentrations of these elements by measuring concentrations and size partitioning of these six metals in sea ice, snow, melt ponds, and in the seawater immediately under sea ice. Given that the Arctic is a relatively small basin surrounded by broad continental shelves, sedimentary sources and sinks will also play a major role in controlling the distributions of these elements. Thus, metal concentrations in porewater samples from bottom sediments will also be determined from cores in the Bering and Chukchi Seas, in order to investigate benthic exchanges.</p>
Arctic GN01 Diss Metals
largerWorkCitation
project
eng; USA
oceans
Western Arctic Ocean
-179.144
179.804
60.166
89.994
2015-08-12
2015-10-07
From projects that focused on the following 2 locations: 1. Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01) 2. Western Arctic Ocean
0
BCO-DMO catalogue of parameters from Concentrations of dissolved micronutrient trace metals (Fe, Zn, Ni, Cu, Cd, Pb, Mn) in seawater, sea ice, and melt ponds collected during the US GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015
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/817603.rdf
Name: Station_ID
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/817604.rdf
Name: Start_Date_UTC
Units: unitless
Description: <p>Sampling start day (UTC); format: MM/DD/YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/817605.rdf
Name: Start_Time_UTC
Units: unitless
Description: <p>Sampling start time (UTC); format: hh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/817606.rdf
Name: Start_ISO_DateTime_UTC
Units: yyyy-MM-dd'T'HH:mm'Z'
Description: <p>Sampling start date/time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817607.rdf
Name: End_Date_UTC
Units: unitless
Description: <p>Sampling end day (UTC); format: MM/DD/YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/817608.rdf
Name: End_Time_UTC
Units: unitless
Description: <p>Sampling end time (UTC); format: hh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/817609.rdf
Name: End_ISO_DateTime_UTC
Units: unitless
Description: <p>Sampling end date/time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817610.rdf
Name: Start_Latitude
Units: decimal degrees North
Description: <p>Sampling start latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/817611.rdf
Name: Start_Longitude
Units: decimal degrees East
Description: <p>Sampling start longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/817612.rdf
Name: End_Latitude
Units: decimal degrees North
Description: <p>Sampling end latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/817613.rdf
Name: End_Longitude
Units: decimal degrees East
Description: <p>Sampling end longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/817614.rdf
Name: Event_ID
Units: unitless
Description: <p>GEOTRACES event number</p>
http://lod.bco-dmo.org/id/dataset-parameter/817615.rdf
Name: Sample_ID
Units: unitless
Description: <p>GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/817616.rdf
Name: Sample_Depth
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/817617.rdf
Name: Fe_D_CONC_BOAT_PUMP_seyj5m
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Fe concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817618.rdf
Name: SD1_Fe_D_CONC_BOAT_PUMP_seyj5m
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Fe_D_CONC_BOAT_PUMP_seyj5m</p>
http://lod.bco-dmo.org/id/dataset-parameter/817619.rdf
Name: Flag_Fe_D_CONC_BOAT_PUMP_seyj5m
Units: None
Description: <p>SeaDataNet quality flag for Fe_D_CONC_BOAT_PUMP_seyj5m</p>
http://lod.bco-dmo.org/id/dataset-parameter/817620.rdf
Name: Fe_D_CONC_BOTTLE_mbve6p
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Fe concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817621.rdf
Name: SD1_Fe_D_CONC_BOTTLE_mbve6p
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Fe_D_CONC_BOTTLE_mbve6p</p>
http://lod.bco-dmo.org/id/dataset-parameter/817622.rdf
Name: Flag_Fe_D_CONC_BOTTLE_mbve6p
Units: None
Description: <p>SeaDataNet quality flag for Fe_D_CONC_BOTTLE_mbve6p</p>
http://lod.bco-dmo.org/id/dataset-parameter/817623.rdf
Name: Fe_D_CONC_MELTPOND_PUMP_aovig3
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Fe concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817624.rdf
Name: SD1_Fe_D_CONC_MELTPOND_PUMP_aovig3
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Fe_D_CONC_MELTPOND_PUMP_aovig3</p>
http://lod.bco-dmo.org/id/dataset-parameter/817625.rdf
Name: Flag_Fe_D_CONC_MELTPOND_PUMP_aovig3
Units: None
Description: <p>SeaDataNet quality flag for Fe_D_CONC_MELTPOND_PUMP_aovig3</p>
http://lod.bco-dmo.org/id/dataset-parameter/817626.rdf
Name: Fe_D_CONC_SUBICE_PUMP_xw9ez2
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Fe concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817627.rdf
Name: SD1_Fe_D_CONC_SUBICE_PUMP_xw9ez2
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Fe_D_CONC_SUBICE_PUMP_xw9ez2</p>
http://lod.bco-dmo.org/id/dataset-parameter/817628.rdf
Name: Flag_Fe_D_CONC_SUBICE_PUMP_xw9ez2
Units: None
Description: <p>SeaDataNet quality flag for Fe_D_CONC_SUBICE_PUMP_xw9ez2</p>
http://lod.bco-dmo.org/id/dataset-parameter/817629.rdf
Name: Zn_D_CONC_BOAT_PUMP_sr4ksq
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Zn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817630.rdf
Name: SD1_Zn_D_CONC_BOAT_PUMP_sr4ksq
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Zn_D_CONC_BOAT_PUMP_sr4ksq</p>
http://lod.bco-dmo.org/id/dataset-parameter/817631.rdf
Name: Flag_Zn_D_CONC_BOAT_PUMP_sr4ksq
Units: None
Description: <p>SeaDataNet quality flag for Zn_D_CONC_BOAT_PUMP_sr4ksq</p>
http://lod.bco-dmo.org/id/dataset-parameter/817632.rdf
Name: Zn_D_CONC_BOTTLE_duv8lf
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Zn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817633.rdf
Name: SD1_Zn_D_CONC_BOTTLE_duv8lf
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Zn_D_CONC_BOTTLE_duv8lf</p>
http://lod.bco-dmo.org/id/dataset-parameter/817634.rdf
Name: Flag_Zn_D_CONC_BOTTLE_duv8lf
Units: None
Description: <p>SeaDataNet quality flag for Zn_D_CONC_BOTTLE_duv8lf</p>
http://lod.bco-dmo.org/id/dataset-parameter/817635.rdf
Name: Zn_D_CONC_MELTPOND_PUMP_6arsth
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Zn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817636.rdf
Name: SD1_Zn_D_CONC_MELTPOND_PUMP_6arsth
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Zn_D_CONC_MELTPOND_PUMP_6arsth</p>
http://lod.bco-dmo.org/id/dataset-parameter/817637.rdf
Name: Flag_Zn_D_CONC_MELTPOND_PUMP_6arsth
Units: None
Description: <p>SeaDataNet quality flag for Zn_D_CONC_MELTPOND_PUMP_6arsth</p>
http://lod.bco-dmo.org/id/dataset-parameter/817638.rdf
Name: Zn_D_CONC_SUBICE_PUMP_iiplby
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Zn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817639.rdf
Name: SD1_Zn_D_CONC_SUBICE_PUMP_iiplby
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Zn_D_CONC_SUBICE_PUMP_iiplby</p>
http://lod.bco-dmo.org/id/dataset-parameter/817640.rdf
Name: Flag_Zn_D_CONC_SUBICE_PUMP_iiplby
Units: None
Description: <p>SeaDataNet quality flag for Zn_D_CONC_SUBICE_PUMP_iiplby</p>
http://lod.bco-dmo.org/id/dataset-parameter/817641.rdf
Name: Ni_D_CONC_BOAT_PUMP_6tq9f5
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Ni concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817642.rdf
Name: SD1_Ni_D_CONC_BOAT_PUMP_6tq9f5
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Ni_D_CONC_BOAT_PUMP_6tq9f5</p>
http://lod.bco-dmo.org/id/dataset-parameter/817643.rdf
Name: Flag_Ni_D_CONC_BOAT_PUMP_6tq9f5
Units: None
Description: <p>SeaDataNet quality flag for Ni_D_CONC_BOAT_PUMP_6tq9f5</p>
http://lod.bco-dmo.org/id/dataset-parameter/817644.rdf
Name: Ni_D_CONC_BOTTLE_zb891m
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Ni concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817645.rdf
Name: SD1_Ni_D_CONC_BOTTLE_zb891m
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Ni_D_CONC_BOTTLE_zb891m</p>
http://lod.bco-dmo.org/id/dataset-parameter/817646.rdf
Name: Flag_Ni_D_CONC_BOTTLE_zb891m
Units: None
Description: <p>SeaDataNet quality flag for Ni_D_CONC_BOTTLE_zb891m</p>
http://lod.bco-dmo.org/id/dataset-parameter/817647.rdf
Name: Ni_D_CONC_MELTPOND_PUMP_cjc37u
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Ni concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817648.rdf
Name: SD1_Ni_D_CONC_MELTPOND_PUMP_cjc37u
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Ni_D_CONC_MELTPOND_PUMP_cjc37u</p>
http://lod.bco-dmo.org/id/dataset-parameter/817649.rdf
Name: Flag_Ni_D_CONC_MELTPOND_PUMP_cjc37u
Units: None
Description: <p>SeaDataNet quality flag for Ni_D_CONC_MELTPOND_PUMP_cjc37u</p>
http://lod.bco-dmo.org/id/dataset-parameter/817650.rdf
Name: Ni_D_CONC_SUBICE_PUMP_jwng6k
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Ni concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817651.rdf
Name: SD1_Ni_D_CONC_SUBICE_PUMP_jwng6k
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Ni_D_CONC_SUBICE_PUMP_jwng6k</p>
http://lod.bco-dmo.org/id/dataset-parameter/817652.rdf
Name: Flag_Ni_D_CONC_SUBICE_PUMP_jwng6k
Units: None
Description: <p>SeaDataNet quality flag for Ni_D_CONC_SUBICE_PUMP_jwng6k</p>
http://lod.bco-dmo.org/id/dataset-parameter/817653.rdf
Name: Cu_D_CONC_BOAT_PUMP_dxalhy
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cu concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817654.rdf
Name: SD1_Cu_D_CONC_BOAT_PUMP_dxalhy
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cu_D_CONC_BOAT_PUMP_dxalhy</p>
http://lod.bco-dmo.org/id/dataset-parameter/817655.rdf
Name: Flag_Cu_D_CONC_BOAT_PUMP_dxalhy
Units: None
Description: <p>SeaDataNet quality flag for Cu_D_CONC_BOAT_PUMP_dxalhy</p>
http://lod.bco-dmo.org/id/dataset-parameter/817656.rdf
Name: Cu_D_CONC_BOTTLE_fnh92g
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cu concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817657.rdf
Name: SD1_Cu_D_CONC_BOTTLE_fnh92g
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cu_D_CONC_BOTTLE_fnh92g</p>
http://lod.bco-dmo.org/id/dataset-parameter/817658.rdf
Name: Flag_Cu_D_CONC_BOTTLE_fnh92g
Units: None
Description: <p>SeaDataNet quality flag for Cu_D_CONC_BOTTLE_fnh92g</p>
http://lod.bco-dmo.org/id/dataset-parameter/817659.rdf
Name: Cu_D_CONC_MELTPOND_PUMP_nrdn3k
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cu concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817660.rdf
Name: SD1_Cu_D_CONC_MELTPOND_PUMP_nrdn3k
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cu_D_CONC_MELTPOND_PUMP_nrdn3k</p>
http://lod.bco-dmo.org/id/dataset-parameter/817661.rdf
Name: Flag_Cu_D_CONC_MELTPOND_PUMP_nrdn3k
Units: None
Description: <p>SeaDataNet quality flag for Cu_D_CONC_MELTPOND_PUMP_nrdn3k</p>
http://lod.bco-dmo.org/id/dataset-parameter/817662.rdf
Name: Cu_D_CONC_SUBICE_PUMP_nlsreh
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cu concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817663.rdf
Name: SD1_Cu_D_CONC_SUBICE_PUMP_nlsreh
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cu_D_CONC_SUBICE_PUMP_nlsreh</p>
http://lod.bco-dmo.org/id/dataset-parameter/817664.rdf
Name: Flag_Cu_D_CONC_SUBICE_PUMP_nlsreh
Units: None
Description: <p>SeaDataNet quality flag for Cu_D_CONC_SUBICE_PUMP_nlsreh</p>
http://lod.bco-dmo.org/id/dataset-parameter/817665.rdf
Name: Cd_D_CONC_BOAT_PUMP_gn8aeu
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cu concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817666.rdf
Name: SD1_Cd_D_CONC_BOAT_PUMP_gn8aeu
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cd_D_CONC_BOAT_PUMP_gn8aeu</p>
http://lod.bco-dmo.org/id/dataset-parameter/817667.rdf
Name: Flag_Cd_D_CONC_BOAT_PUMP_gn8aeu
Units: None
Description: <p>SeaDataNet quality flag for Cd_D_CONC_BOAT_PUMP_gn8aeu</p>
http://lod.bco-dmo.org/id/dataset-parameter/817668.rdf
Name: Cd_D_CONC_BOTTLE_q5wtaz
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cd concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817669.rdf
Name: SD1_Cd_D_CONC_BOTTLE_q5wtaz
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cd_D_CONC_BOTTLE_q5wtaz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817670.rdf
Name: Flag_Cd_D_CONC_BOTTLE_q5wtaz
Units: None
Description: <p>SeaDataNet quality flag for Cd_D_CONC_BOTTLE_q5wtaz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817671.rdf
Name: Cd_D_CONC_MELTPOND_PUMP_uqcvgj
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cd concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817672.rdf
Name: SD1_Cd_D_CONC_MELTPOND_PUMP_uqcvgj
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cd_D_CONC_MELTPOND_PUMP_uqcvgj</p>
http://lod.bco-dmo.org/id/dataset-parameter/817673.rdf
Name: Flag_Cd_D_CONC_MELTPOND_PUMP_uqcvgj
Units: None
Description: <p>SeaDataNet quality flag for Cd_D_CONC_MELTPOND_PUMP_uqcvgj</p>
http://lod.bco-dmo.org/id/dataset-parameter/817674.rdf
Name: Cd_D_CONC_SUBICE_PUMP_tsxyvz
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Cd concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817675.rdf
Name: SD1_Cd_D_CONC_SUBICE_PUMP_tsxyvz
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Cd_D_CONC_SUBICE_PUMP_tsxyvz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817676.rdf
Name: Flag_Cd_D_CONC_SUBICE_PUMP_tsxyvz
Units: None
Description: <p>SeaDataNet quality flag for Cd_D_CONC_SUBICE_PUMP_tsxyvz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817677.rdf
Name: Pb_D_CONC_BOAT_PUMP_ivc9dz
Units: picomoles per kilogram (pmol/kg)
Description: <p>Pb concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817678.rdf
Name: SD1_Pb_D_CONC_BOAT_PUMP_ivc9dz
Units: picomoles per kilogram (pmol/kg)
Description: <p>One standard deviation of Pb_D_CONC_BOAT_PUMP_ivc9dz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817679.rdf
Name: Flag_Pb_D_CONC_BOAT_PUMP_ivc9dz
Units: None
Description: <p>SeaDataNet quality flag for Pb_D_CONC_BOAT_PUMP_ivc9dz</p>
http://lod.bco-dmo.org/id/dataset-parameter/817680.rdf
Name: Pb_D_CONC_BOTTLE_4csho6
Units: picomoles per kilogram (pmol/kg)
Description: <p>Pb concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817681.rdf
Name: SD1_Pb_D_CONC_BOTTLE_4csho6
Units: picomoles per kilogram (pmol/kg)
Description: <p>One standard deviation of Pb_D_CONC_BOTTLE_4csho6</p>
http://lod.bco-dmo.org/id/dataset-parameter/817682.rdf
Name: Flag_Pb_D_CONC_BOTTLE_4csho6
Units: None
Description: <p>SeaDataNet quality flag for Pb_D_CONC_BOTTLE_4csho6</p>
http://lod.bco-dmo.org/id/dataset-parameter/817683.rdf
Name: Pb_D_CONC_MELTPOND_PUMP_bhefxy
Units: picomoles per kilogram (pmol/kg)
Description: <p>Pb concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817684.rdf
Name: SD1_Pb_D_CONC_MELTPOND_PUMP_bhefxy
Units: picomoles per kilogram (pmol/kg)
Description: <p>One standard deviation of Pb_D_CONC_MELTPOND_PUMP_bhefxy</p>
http://lod.bco-dmo.org/id/dataset-parameter/817685.rdf
Name: Flag_Pb_D_CONC_MELTPOND_PUMP_bhefxy
Units: None
Description: <p>SeaDataNet quality flag for Pb_D_CONC_MELTPOND_PUMP_bhefxy</p>
http://lod.bco-dmo.org/id/dataset-parameter/817686.rdf
Name: Pb_D_CONC_SUBICE_PUMP_g778y2
Units: picomoles per kilogram (pmol/kg)
Description: <p>Pb concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817687.rdf
Name: SD1_Pb_D_CONC_SUBICE_PUMP_g778y2
Units: picomoles per kilogram (pmol/kg)
Description: <p>One standard deviation of Pb_D_CONC_SUBICE_PUMP_g778y2</p>
http://lod.bco-dmo.org/id/dataset-parameter/817688.rdf
Name: Flag_Pb_D_CONC_SUBICE_PUMP_g778y2
Units: None
Description: <p>SeaDataNet quality flag for Pb_D_CONC_SUBICE_PUMP_g778y2</p>
http://lod.bco-dmo.org/id/dataset-parameter/817689.rdf
Name: Mn_D_CONC_BOAT_PUMP_qcoz2h
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Mn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump from a small boat</p>
http://lod.bco-dmo.org/id/dataset-parameter/817690.rdf
Name: SD1_Mn_D_CONC_BOAT_PUMP_qcoz2h
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Mn_D_CONC_BOAT_PUMP_qcoz2h</p>
http://lod.bco-dmo.org/id/dataset-parameter/817691.rdf
Name: Flag_Mn_D_CONC_BOAT_PUMP_qcoz2h
Units: None
Description: <p>SeaDataNet quality flag for Mn_D_CONC_BOAT_PUMP_qcoz2h</p>
http://lod.bco-dmo.org/id/dataset-parameter/817692.rdf
Name: Mn_D_CONC_BOTTLE_xxmo2v
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Mn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: GO-Flo bottles on CTD rosette</p>
http://lod.bco-dmo.org/id/dataset-parameter/817693.rdf
Name: SD1_Mn_D_CONC_BOTTLE_xxmo2v
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Mn_D_CONC_BOTTLE_xxmo2v</p>
http://lod.bco-dmo.org/id/dataset-parameter/817694.rdf
Name: Flag_Mn_D_CONC_BOTTLE_xxmo2v
Units: None
Description: <p>SeaDataNet quality flag for Mn_D_CONC_BOTTLE_xxmo2v</p>
http://lod.bco-dmo.org/id/dataset-parameter/817695.rdf
Name: Mn_D_CONC_MELTPOND_PUMP_6uncit
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Mn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Melt pond water; Collection method: Pump into melt pond</p>
http://lod.bco-dmo.org/id/dataset-parameter/817696.rdf
Name: SD1_Mn_D_CONC_MELTPOND_PUMP_6uncit
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Mn_D_CONC_MELTPOND_PUMP_6uncit</p>
http://lod.bco-dmo.org/id/dataset-parameter/817697.rdf
Name: Flag_Mn_D_CONC_MELTPOND_PUMP_6uncit
Units: None
Description: <p>SeaDataNet quality flag for Mn_D_CONC_MELTPOND_PUMP_6uncit</p>
http://lod.bco-dmo.org/id/dataset-parameter/817698.rdf
Name: Mn_D_CONC_SUBICE_PUMP_1umris
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Mn concentration; Size fraction: Dissolved, <0.2 um; Sample type: Seawater; Collection method: Pump through sea ice into seawater</p>
http://lod.bco-dmo.org/id/dataset-parameter/817699.rdf
Name: SD1_Mn_D_CONC_SUBICE_PUMP_1umris
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviation of Mn_D_CONC_SUBICE_PUMP_1umris</p>
http://lod.bco-dmo.org/id/dataset-parameter/817700.rdf
Name: Flag_Mn_D_CONC_SUBICE_PUMP_1umris
Units: None
Description: <p>SeaDataNet quality flag for Mn_D_CONC_SUBICE_PUMP_1umris</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
143234
https://darchive.mblwhoilibrary.org/bitstream/1912/26953/1/dataset-817259_gn01-dissolved-micronutrient-trace-metals__v2.tsv
download
143206
https://darchive.mblwhoilibrary.org/bitstream/1912/25930/1/dataset-817259_gn01-dissolved-micronutrient-trace-metals__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.817259.1
download
onLine
dataset
<p>All trace metal-clean seawater samples in this dataset were collected following the prescribed US GEOTRACES protocol ("GEOTRACES cookbook": for more information see (Cutter et al., 2010; Cutter and Bruland, 2012)). Briefly, 24 Teflon-coated, acid-cleaned and preconditioned GO-FLO bottles were deployed on an epoxy-coated aluminum rosette and were tripped on ascent at 3 m/min. Once on deck, bottles were immediately capped with plastic shower caps on both ends to reduce contamination and subsequently kept in a clean sampling van under positive-pressure, HEPA-filtered air. All handling and subsampling was performed exclusively by designated, trace metal-clean personnel to preserve homogeneity and further reduce contamination.</p>
<p>During sampling for the GO-Flo samples, salinity and nutrient (unfiltered) samples were taken first, and then all Go-Flo bottles were pressurized to ~0.7 atm with HEPA-filtered air. Each bottle was fitted with an acid-cleaned and seawater-preconditioned 0.2 um AcroPak-200 capsule filter (Pall), and at least 500 mL was passed through each filter to rinse. Samples were collected in acid-cleaned (hydrochloric acid, 1 M (Fitzsimmons and Boyle, 2012)) LDPE bottles (Nalgene) after three 10% rinses of the bottle, cap, and threads and filled to the shoulder or as volume allowed.</p>
<p>In the absence of sea ice, surface samples were collected in trace metal clean fashion by taking a small boat upstream of the ship. The small boat was pointed into the oncoming current to sample "uncontaminated water" as it passed the boat, and a trained trace metal personnel wearing trace metal clean gloves and plastic sleeves submerged an acid-cleaned carboy under the water surface from the bow of the boat, always keeping the carboy pointed into the oncoming water. The carboy was immediately capped and bagged for transit back to the ship, where it was immediately filtered (0.2 um, Acropak-200) and sub-sampled into individual bottles, including our acid-clean 250 mL LDPE bottles.</p>
<p>A small subset of samples from designated "ice stations" (Stations 31, 33, 39, 43) were collected under the ice (approx. 1, 5, and 20 m) after the ice was drilled with a polypropylene/titanium trace metal coring system. Sampling was done using a polypropylene, battery-powered motor centrifugal pump with ½ inch FEP-lined Tygon tubing. Samples were collected and filtered (0.2 um, Acropak-200) into a 25 L acid-cleaned carboy and then sub-sampled back on the ship, including into our acid-clean 250 mL LDPE bottles, within 3 hours of collection.</p>
<p>At these same "ice stations", melt pond samples were collected (Marsay et al., 2018) by clearing surface snow with an acid-cleaned polyethylene shovel and then using a polyethylene/titanium trace metal coring system to drill through the upper ice. Melt pond water was pumped using a battery-powered polyethylene pump through pre-cleaned C-flex tubing into a pre-cleaned LDPE carboy. The melt pond sample in this carboy was filtered and sub-sampled into individual bottles, including our acid-clean 250 mL LDPE bottles, within 3 hours of collection.</p>
<p>Subsequently, all samples were acidified under clean air conditions to pH~2 with 0.012 M HCl (Optima, Fisher Scientific) within 1 week of sample collection and stored at room temperature until analyzed.</p>
<p>At least 9 months after acidification, samples were analyzed for trace metal (Fe, Ni, Cu, Zn, Pb, Cd, Mn) concentrations at Texas A&amp;M University after pre-concentration on a SeaFAST-pico system (Elemental Scientific Inc.). This method follows a modified version of Lagerström et al. (2013) and is described completely for all elements in Jensen et al. (2020). Briefly, 10 mL of acidified seawater sample was weighed and then spiked with an isotope mixture containing 57Fe, 62Ni, 65Cu, 68Zn, 206Pb, and 111Cd. The mixture was then automatically loaded into the SeaFAST system. Monoisotopic metals such as Mn were measured via a 6-point standard curve using standards made up in low-metal seawater (maintained in-house) such that Mn concentrations spanned 0 to 10 nmol/kg; these standard curves were each run through the SeaFAST twice (once to start and once to end each run) as samples. The SeaFAST method buffers the acidified (pH~2) sample with a ~5.90 N ammonium acetate buffer (Optima, Fisher Scientific) to pH ~6.5 and loads the buffered mixture onto a pre-cleaned column containing Nobias PA1 resin (Sohrin et al., 2008). Each sample is then back-eluted with a solution of 10% (v/v) nitric acid and 1 ppb In (Optima, Fisher Scientific) to yield 400 uL, representing a 25-fold pre-concentration of each trace metal. Within days, each eluent is analyzed in low (204Pb, 206Pb, and 111Cd, 114Cd, 115In) and medium resolution (55Mn, 56Fe, 57Fe, 60Ni, 62Ni, 63Cu, 65Cu, 66Zn, 68Zn, 115In) on a Thermo Element XR high resolution ICP-MS in the Ken Williams Radiogenic Facility in the College of Geosciences at Texas A&amp;M University.</p>
<p>Each sample run included ~80 aliquots from the SeaFAST. Every 10 SeaFAST samples on the XR, pure 10% (v/v) nitric with 1 ppb of 115In was run to extract a potential instrument blank coming from the instrument itself. Prior to running on the ICP-MS, the machine was “cleaned” with this mixture as a precaution against contamination from other samples, in addition to using a separate set of cones, nebulizer, spray chamber, and sample probe for SeaFAST samples only.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
The raw counts from the HR-ICP-MS analyses were first corrected for any instrument blank derived from the 10% nitric acid and In solution repeatedly analyzed during the instrumental analyses. Following this, each sample was corrected for machine drift and variation in instrumental sensitivity during analysis using the added 115In as well as instrument mass bias using elemental standards for Fe, Zn, Ni, Cu, Pb, and Cd. Subsequently, all counts for isotope spiked elements were converted to concentration in nmol/kg based on the weight of the sample and known concentrations of the added isotope spike mixture. The counts for the monoisotopic elements were converted to concentration units using the matrix-matched standard curves, which were run through the SeaFAST themselves as samples. It should be noted that all Cd concentrations are reported based on the 114/111Cd ratio.</p>
<p>For every 40 seawater samples at least 24 "Procedure blanks" were included throughout the run (every 10 seawater samples). These process blanks consisted of freshly acidified milli-Q (MQ) water spiked with a diluted version of the isotope spike mixture. Each blank was processed identically to a sample in an attempt to account for contamination coming from solutions (buffer, eluent) used or the SeaFAST itself. The MQ water is typically collected from various supplies at Texas A&amp;M to ensure that the "procedure blank" is not derived from the MQ water itself. After conversion to concentration units, the most consistent procedure blank values for each metal are used to subtract an average procedure blank from all sample concentrations determined during that run. Each run, an internal standard was analyzed six times and an external standard (such as SAFe water) was analyzed two times as a "check" of our long-term precision and accuracy.</p>
<p><strong>Quality Control:</strong><br />
For detection limits, accuracy, and precision information, refer to the Supplemental File <a href="https://datadocs.bco-dmo.org/docs/302/geotraces/GEOTRACES_ARCTIC/fitzsimmons/data_docs/Detection_Limits_Accuracy_Precision_817259.pdf" target="_blank">Detection_Limits_Accuracy_Precision_817259</a> (PDF)</p>
<p><strong>Quality Flags:</strong><br />
Data were flagged using the SeaDataNet quality flag scheme. For more information on SeaDataNet flags, see: https://www.geotraces.org/geotraces-quality-flag-policy/ and https://www.seadatanet.org/Standards/Data-Quality-Control</p>
<p>SeaDataNet quality flag definitions:<br />
0 = No quality control;<br />
1 = Good value;<br />
2 = Probably good value;<br />
3 = Probably bad value;<br />
4 = Bad value;<br />
5 = Changed value;<br />
6 = Value below detection;<br />
7 = Value in excess;<br />
8 = Interpolated value;<br />
9 = Missing value;<br />
A = Value phenomenon uncertain.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- renamed fields;<br />
- added date/time columns in ISO8601 format;<br />
- 2021-04-15 (v2): made the following corrections:<br />
changed Event_ID to 6449 for Sample_ID numbers 12147, 12151, 12155, and 12161;<br />
added Start_Time_UTC, Start_Latitude, and Start_Longitude to Event_ID 6405 (these values were obtained from dataset <a href="https://www.bco-dmo.org/dataset/762056" target="_blank">https://www.bco-dmo.org/dataset/762056</a>)</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
GO-FLO bottles
GO-FLO bottles
PI Supplied Instrument Name: GO-FLO bottles PI Supplied Instrument Description:All trace metal-clean seawater samples in this dataset were collected following the prescribed US GEOTRACES protocol ("GEOTRACES cookbook"). Briefly, 24 Teflon-coated, acid-cleaned and preconditioned GO-FLO bottles were deployed on an epoxy-coated aluminum rosette and were tripped on ascent at 3 m/min Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
titanium trace metal coring system
titanium trace metal coring system
PI Supplied Instrument Name: titanium trace metal coring system PI Supplied Instrument Description:Ice was drilled with a polypropylene/titanium trace metal coring system. Instrument Name: Ice Corer Instrument Short Name:Ice Corer Instrument Description: An ice corer is used to drill into deep ice and remove long cylinders of ice from which information about the past and present can be inferred. Polar ice cores contain a record of the past atmosphere - temperature, precipitation, gas content, chemical composition, and other properties. This can reveal a broad spectrum of information on past environmental, and particularly climatic, changes. They can also be used to study bacteria and chlorophyll production in the waters from which the ice core was extracted. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/56/
SeaFAST pico, Elemental Scientific Inc.
SeaFAST pico, Elemental Scientific Inc.
PI Supplied Instrument Name: SeaFAST pico, Elemental Scientific Inc. PI Supplied Instrument Description:Samples were analyzed for trace metal (Fe, Ni, Cu, Zn, Pb, Cd, Mn) concentrations at Texas A&M University after pre-concentration on a SeaFAST-pico system (Elemental Scientific Inc.). The seaFAST-pico is an ultra-clean, inline, automated, low-pressure ion chromatography system. The automated method buffers acidified seawater inline before loading it onto a column, where matrix is removed and the concentrated sample is eluted directly to an ICP-MS. 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/
Element XR high-resolution inductively coupled plasma mass spectrometer (HR-ICP-MS)
Element XR high-resolution inductively coupled plasma mass spectrometer (HR-ICP-MS)
PI Supplied Instrument Name: Element XR high-resolution inductively coupled plasma mass spectrometer (HR-ICP-MS) PI Supplied Instrument Description:A Thermo Element XR high resolution ICP-MS in the Ken Williams Radiogenic Facility in the College of Geosciences at Texas A&M University was used. 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/
centrifugal pump; polyethylene pump
centrifugal pump; polyethylene pump
PI Supplied Instrument Name: centrifugal pump; polyethylene pump PI Supplied Instrument Description:A small subset of samples from designated "ice stations" (Stations 31, 33, 39, 43) were collected under the ice (approx. 1, 5, and 20 m) after the ice was drilled with a polypropylene/titanium trace metal coring system. Sampling was done using a polypropylene, battery-powered motor centrifugal pump with ½ inch FEP-lined Tygon tubing.
At these same "ice stations", melt pond samples were collected by clearing surface snow with an acid-cleaned polyethylene shovel and then using a polyethylene/titanium trace metal coring system to drill through the upper ice. Melt pond water was pumped using a battery-powered polyethylene pump through pre-cleaned C-flex tubing into a pre-cleaned LDPE carboy. 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
Cruise: HLY1502
HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel
HLY1502
David C. Kadko
Florida International University
https://datadocs.bco-dmo.org/docs/302/geotraces/GEOTRACES_ARCTIC/data_docs/cruise_reports/healy1502.pdf
Report describing HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel