http://lod.bco-dmo.org/id/dataset/954941 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 2025-02-27 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved trace metal and macronutrient concentrations from field samples collected during the EXPORTS North Atlantic campaign at the Porcupine Abyssal Plain-Sustained Observatory (PAP-SO) site on board the RRS Discovery (DY131) in May 2021 2025-02-28 publication 2025-02-28 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2025-03-03 publication https://doi.org/10.26008/1912/bco-dmo.954941.1 Kristen Nicolle Buck University of South Florida principalInvestigator Mark A. Brzezinski University of California-Santa Barbara principalInvestigator Bethany D. Jenkins University of Rhode Island principalInvestigator Salvatore Caprara University of South Florida 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: Buck, K. N., Navarro-Estrada, D., Caprara, S., Jenkins, B. D., Brzezinski, M. A. (2025) Dissolved trace metal and macronutrient concentrations from field samples collected during the EXPORTS North Atlantic campaign at the Porcupine Abyssal Plain-Sustained Observatory (PAP-SO) site on board the RRS Discovery (DY131) in May 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-02-28 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.954941.1 [access date] EXPORTS NA nuts and TM field data Dataset Description: Methods and Sampling: &lt;p&gt;&lt;strong&gt;Sample Collection:&lt;/strong&gt;&lt;br /&gt; This work was funded by NSF and conducted in collaboration with the NASA EXPORTS campaign at Porcupine Abyssal Plain-Sustained Observatory (PAP-SO), which sampled the decline of the North Atlantic Spring Bloom (NASB) in May 2021 on board the RRS Discovery (Cruise ID: DY131). All sampling occurred within a retentive eddy named &quot;A2&quot;, with a deep anticyclonic structure. Field samples for dissolved (&amp;lt;0.4 or &amp;lt;0.2 micrometer (µm)) trace metals (Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb), and dissolved (&amp;lt;0.4 or &amp;lt;0.2 µm) macronutrients (P, N, Si) from surface and subsurface waters were collected as environmental context for the incubation experiments also conducted as part of this study.&lt;/p&gt; &lt;p&gt;All sampling was performed following trace metal clean procedures. Surface (~2 meters (m)) water was collected using a trace metal clean towfish that was sampled while underway at a speed of 4-6 knots (Mellett and Buck 2020). Surface dissolved trace metal and macronutrient samples were collected from the towfish while filling the 'Long-term' and 'Short-term' experiment incubation bottles, as follows: prior to filling the first set of carboys corresponding to the first replicate of the treatments (three replicates per treatment total), after filling the second set of carboys, after the third set, and after filling all replicate incubation carboys. These samples were filtered inline through a 0.2 µm (Pall Acropak) capsule filter. These samples are labelled &quot;Survey Samples&quot;.&lt;/p&gt; &lt;p&gt;Subsurface trace metal and macronutrient samples were collected using a trace metal clean rosette (TMC CTD) deployed on synthetic line and outfitted with modified trace metal clean x-Niskin bottles (12-liters (L), OceanTestEquipment, Inc.; Cutter et al. 2017). Samples for dissolved trace metal and macronutrient samples were filtered either inline through a &amp;lt;0.2 µm capsule filter (Pall Acropak) or filtered offline through sequential acid-cleaned polycarbonate track-etch (PCTE) filters (5 µm, 0.4 µm) in a dual stage filtration system (Savillex) on a custom acrylic base. For a subset of profiles, additional unfiltered (total dissolvable, TD) samples were collected and filtered offline after eighteen months of storage and prior to analysis (TD Savillex). All dissolved and total dissolvable trace metal samples were acidified to 0.024 M hydrochloric acid (Optima, Fisher) and stored at room temperature until analyzed at USF. All macronutrient samples were stored frozen (-20 degrees Celsius (ºC)) until analyzed in the lab at USF. Seven depth profiles were deployed during the cruise, and water from casts #1, #3, and #6 were used to collect seawater for the Grow-Out incubation experiments. All TMC CTD casts occurred between 11 am and 12 pm local ship time.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Analysis of dissolved and total dissolvable trace metals:&lt;/strong&gt;&lt;br /&gt; Sample analysis for dissolved trace metals was conducted at the University of South Florida (USF) College of Marine Science (CMS), and Florida State University (FSU) National High Magnetic Field Laboratory (MagLab). To prepare for analysis, dissolved trace metal samples were transferred to 30- or 15-milliliter (mL) perfluoroalkoxy (PFA) vials with caps containing a quartz-window to enable UV-oxidization. Samples were UV-oxidized at USF for 90 minutes at ~20 milliwatts per square centimeter (mW cm-2) with an UVO-Cleaner (Jelight; Model No. 5144AX) to liberate organically complexed dissolved Co and Cu (Milne et al. 2010). For cobalt, nickel, and copper, the UV-oxidized and non-UV-oxidized sample results are presented separately.&lt;/p&gt; &lt;p&gt;The automated seaFAST-pico (Elemental Scientific) with a Nobias Chelate-PA1 resin was connected to a High Resolution-Inductively Coupled Plasma-Mass Spectrometer (HR-ICP-MS; Thermo Scientific Element 2 at FSU, Element XR at USF), to preconcentrate and extract trace metals from the seawater samples inline (Lagerström et al. 2013). The reagents and input flow rates for seaFAST were followed from Hollister et al. (2020) and Burns et al. (2023). The elution acid in this study was a solution of 10% HNO3 (Optima) with 1 ppb Indium as the internal standard. Upon loading the buffered sample (pH ~ 6.2 ± 0.2; Burns et al. 2023) in the resin column, the column was rinsed with Milli-Q (≥18.2 MΩ·cm) to wash out seawater salts, and the chelated trace metals were eluted with the elution acid containing the internal standard. The eluent from seaFAST was then drawn by the ICP-MS and analyzed for the natural abundance of Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb. Samples were analyzed twice, on the Element 2 at FSU, and on the Element XR at USF.&lt;/p&gt; &lt;p&gt;All analytical runs were comprised of seawater samples, instrument-manifold air blanks, quality control (QC) samples, a matrix-matched multielement calibration curve containing all target metals, a matrix-matched molybdenum (Mo) calibration curve, and certified reference materials, including SAFe D2, GEOTRACES GSP, and NASS-7. All seawater calibration curves and reference samples were prepared and treated the same as the seawater samples throughout the analytical runs.&lt;/p&gt; &lt;p&gt;The in-house QC consisted of 2-L aliquots of filtered (&amp;lt;0.2 µm) PAP-SO surface seawater (49.20469 °N, -14.78163 °E) that was collected in bulk on the 2021 EXPORTS cruise and then subsampled and acidified to 0.024 M HCl (Optima) for each QC aliquot. The matrix-matched curves, including the multielement and Mo calibration curves, were made using the same seawater as the QC to match the matrix of the seawater samples. The matrix-matched multielement calibration curve was made by dilution from a set of working stocks containing the target metals. These working stocks were diluted from ICP primary standards of 1000 micrograms per milliliter (µg/mL) in 2% HNO3 of Mn (SPEX CertiPrep), Fe, Co, Ni, Cu, Cd (ULTRA Scientific), Zn and Pb (RICCA) diluted with 5% HNO3 (Optima, Fisher) elution acid matrix. The Mo ICP primary standard consisted of 1000 µg/mL Mo in H2O (SPEX CertiPrep), from which a Mo working stock was made by dilution with 5% HNO3 (Optima, Fisher).&lt;/p&gt; &lt;p&gt;The analytical runs usually began by conditioning the inline seaFAST-ICP-MS with a few samples of filtered seawater, followed by several air and MQ blanks, calibration curves including the multielement and Mo curves, certified reference materials (also included in the middle of each analytical run to allow replicate measurements), seawater samples, several QC samples spread throughout the analytical run (every ~15th sample), several additional air blanks, and finalized by air blank samples. Sample trace metal concentrations were determined from calibration curves of the intensity counts against standards of known concentrations and corrected for average air blanks in the sequence as described previously by Hollister et al. (2020) and Burns et al. (2023). All dissolved and total dissolvable trace metal analyses were performed by PhD student Delfina Navarro-Estrada with assistance from senior researcher Salvatore Caprara in the Buck lab at the University of South Florida.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Analysis of dissolved macronutrients:&lt;/strong&gt;&lt;br /&gt; Macronutrient samples were thawed at room temperature and analyzed following standard colorimetric methods (Parsons et al. 1984; Becker et al. 2020) using a QuAAtro39 AutoAnalyzer (SEAL Analytical) at USF. The analytical runs included seawater samples, calibration curves made in artificial seawater, reagent blanks consisting of the artificial seawater used to make the calibration curves, reference materials including CK, CL, and CO (KANSO TECHNOS), and QC samples, including standards with known concentrations of nitrite and nitrate to check the efficiency of the instrument's cadmium column, and the lowest and middle-high standards of the calibration curve to check and correct for drift. QC samples were added approximately every 12th sample to assess the quality of the analytical run. The range in LODs for macronutrients were 0.006-0.048 micromolar (µM) for nitrate+nitrite, 0.011-0.042 µM for phosphate, 0.016-0.108 µM for silicic acid, and 0.004-0.027 µM for nitrite. Values below these limits of detection in each run are reported as 0 µM with accompanying QC Flag 6. Sample analyses for macronutrients were performed by senior researcher Salvatore Caprara in the Buck lab at the University of South Florida.&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756816 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756816 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756433 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756433 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756442 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756442 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2424207 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2424207 completed Kristen Nicolle Buck University of South Florida 541-737-7401 2651 SW Orchard Avenue CEOAS Corvallis OR 97331 USA kristen.buck@oregonstate.edu pointOfContact Mark A. Brzezinski University of California-Santa Barbara 805-893-7061 UCSB Marine Science Institute Bldg 520 Rm 4002 Fl 4L Santa Barbara CA 93106 USA mark.brzezinski@lifesci.ucsb.edu pointOfContact Bethany D. Jenkins University of Rhode Island 401-874-7551 Department of Cell and Molecular Biology and Graduate School of Oceanography 279 CBLS, 120 Flagg Road Kingston RI 02881 USA bdjenkins@uri.edu pointOfContact Salvatore Caprara University of South Florida capraras@oregonstate.edu pointOfContact asNeeded Dataset Version: 1 Unknown CRUISE_ID EVTNBR DATE_UTC TIME_UTC ISO_DateTime_UTC JULIAN_DAY EPOCH EPOCH_DAY LATITUDE LONGITUDE PLATFORM CASTNBR STNNBR BTLNBR DEPTH FILTER_SIZE SAMPLE_ID NO3_NO2_CONC NO3_NO2_STDEV NO3_NO2_FLAG PO4_CONC PO4_STDEV PO4_FLAG SiO4_CONC SiO4_STDEV SiO4_FLAG NO2_CONC NO2_STDEV NO2_FLAG Mn_D_CONC Mn_D_STDEV Mn_D_FLAG Fe_D_CONC Fe_D_STDEV Fe_D_FLAG Co_D_UV_CONC Co_D_UV_STDEV Co_D_UV_FLAG Co_D_noUV_CONC Co_D_noUV_STDEV Co_D_noUV_FLAG Ni_D_UV_CONC Ni_D_UV_STDEV Ni_D_UV_FLAG Ni_D_noUV_CONC Ni_D_noUV_STDEV Ni_D_noUV_FLAG Cu_D_UV_CONC Cu_D_UV_STDEV Cu_D_UV_FLAG Cu_D_noUV_CONC Cu_D_noUV_STDEV Cu_D_noUV_FLAG Zn_D_CONC Zn_D_STDEV Zn_D_FLAG Cd_D_CONC Cd_D_STDEV Cd_D_FLAG Pb_D_CONC Pb_D_STDEV Pb_D_FLAG Mn_TD_CONC Mn_TD_STDEV Mn_TD_FLAG Fe_TD_CONC Fe_TD_STDEV Fe_TD_FLAG Co_TD_UV_CONC Co_TD_UV_STDEV Co_TD_UV_FLAG Co_TD_noUV_CONC Co_TD_noUV_STDEV Co_TD_noUV_FLAG Ni_TD_UV_CONC Ni_TD_UV_STDEV Ni_TD_UV_FLAG Ni_TD_noUV_CONC Ni_TD_noUV_STDEV Ni_TD_noUV_FLAG Cu_TD_UV_CONC Cu_TD_UV_STDEV Cu_TD_UV_FLAG Cu_TD_noUV_CONC Cu_TD_noUV_STDEV Cu_TD_noUV_FLAG Zn_TD_CONC Zn_TD_STDEV Zn_TD_FLAG Cd_TD_CONC Cd_TD_STDEV Cd_TD_FLAG Pb_TD_CONC Pb_TD_STDEV Pb_TD_FLAG ThermoScientific Element II QuAAtro39 AutoAnalyzer (SEAL Analytical) Elemental Scientific seaFAST-pico system ThermoScientific Element XR Towfish theme None, User defined Cruise identfier event date time of day ISO_DateTime_UTC Julian day as a decimal (time elapsed in days from 00:00 on January 1st 4713 BC) time_point latitude longitude instrument cast station bottle depth filter_size sample identification nitrate plus nitrite quality flag reactive phosphorus (PO4) Silicate (reactive silica) Nitrite Manganese Iron Cobalt Nickel Copper Zinc Cadmium Lead featureType BCO-DMO Standard Parameters Inductively Coupled Plasma Mass Spectrometer Nutrient Autoanalyzer SeaFAST Automated Preconcentration System Thermo Scientific ELEMENT XR high resolution inductively coupled plasma mass spectrometer towed unmanned submersible instrument BCO-DMO Standard Instruments DY131 service Deployment Activity Celtic Sea 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. EXport Processes in the Ocean from Remote Sensing http://oceanexports.org/ EXport Processes in the Ocean from Remote Sensing EXport Processes in the Ocean from Remote Sensing (EXPORTS) is a large-scale NASA-led field campaign that will provide critical information for quantifying the export and fate of upper ocean net primary production (NPP) using satellite observations and state of the art ocean technologies. Ocean ecosystems play a critical role in the Earth’s carbon cycle and the quantification of their impacts for both present conditions and for predictions into the future remains one of the greatest challenges in oceanography. The goal of the EXport Processes in the Ocean from Remote Sensing (EXPORTS) Science Plan is to develop a predictive understanding of the export and fate of global ocean net primary production (NPP) and its implications for present and future climates. The achievement of this goal requires a quantification of the mechanisms that control the export of carbon from the euphotic zone as well as its fate in the underlying "twilight zone" where some fraction of exported carbon will be sequestered in the ocean’s interior on time scales of months to millennia. In particular, EXPORTS will advance satellite diagnostic and numerical prognostic models by comparing relationships among the ecological, biogeochemical and physical oceanographic processes that control carbon cycling across a range of ecosystem and carbon cycling states. EXPORTS will achieve this through a combination of ship and robotic field sampling, satellite remote sensing and numerical modeling. Through a coordinated, process-oriented approach, EXPORTS will foster new insights on ocean carbon cycling that maximizes its societal relevance through the achievement of U.S. and International research agency goals and will be a key step towards our understanding of the Earth as an integrated system. EXPORTS largerWorkCitation program Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump https://osprey.bco-dmo.org/project/757387 Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump <p><em>NSF Award Abstract:</em><br /> This project focuses on a group of microscopic single-celled photosynthetic organisms in the ocean called diatoms. Diatoms float in the surface ocean as part of a group of organisms collectively called phytoplankton. There are thousands of different species of diatoms distributed across the global ocean. A famous oceanographer Henry Bigelow once said "All fish is diatoms" reflecting the importance of diatoms as the base of the food chain that supports the world's largest fisheries. Despite their small size, diatom photosynthesis produces 20% of the oxygen on earth each year. That's more than all of the tropical rain forests on land. The major objective of the research is to understand how the metabolic differences among diatom species affects the amount of diatom organic carbon that is carried, or exported, from the surface ocean to the deep ocean. As diatoms are photo-synthesizers like green plants, their biological carbon comes from converting carbon dioxide dissolved in seawater from the atmosphere into organic forms. Diatoms also require a series of other nurtrients supplied by the ocean such as nitrogen and phosphorous and, uniquely for diatoms, the silicon used to construct their glass shells. This research will investigate how genetic and physiological differences among diatoms influence how each species react to changes in nutrient levels in the ocean and how those shifts affect the export of diatom carbon to the deep sea. The link between diatoms' physiological response and their carbon export comes about because shifts in physiology affect diatom attributes like how fast they sink and how tasty they are to predators. So if we can relate the physiological condition of different diatoms to the food-web pathways followed by different species, we can ultimately use knowledge of diatom physiological status and food web structure to predict how much diatom carbon gets to the deep sea. The research involves investigators with expertise in the physiology and genomics of diatoms and in the ocean's chemistry. The work will initially take place in the subarctic North Pacific in conjunction with the NASA Export Processes in the Ocean from RemoTe Sensing (EXPORTS) field program. The EXPORTS program is using a wide variety of methods to quantify the export and fate of photo-synthetically fixed carbon in the upper ocean. The research supports the training of undergraduate students, graduate students and a postdoctoral scholar. The research will also serve as the basis for activities aimed at K-12 and junior high school students.</p> <p>The research will broadly impact our understanding of the biology of the biological pump (the transport of photo-synthetically fixed organic carbon to the deep sea) by forming a mechanistic basis for predicting the export of diatom carbon. It is hypothesized that the type and degree of diatom physiological stress are vital aspects of ecosystem state that drive export. To test this hypothesis, the genetic composition, rates of nutrient use and growth response of diatom communities will be evaluated and supported with measurements of silicon and iron stress to evaluate stress as a predictor of the path of diatom carbon export. The subarctic N. Pacific ecosystem is characterized as high nutrient low chlorophyll (HNLC) due to low iron (Fe) levels that are primary controllers constraining phytoplankton utilization of other nutrients. It has been a paradigm in low Fe, HNLC systems that diatoms grow at elevated Si:C and Si:N ratios and should be efficiently exported as particles significantly enriched in Si relative to C. However, Fe limitation also alters diatoms species composition and the high Si demand imposed by low Fe can drive HNLC regions to Si limitation or Si/Fe co-limitation. Thus, the degree of Si and/or Fe stress in HNLC waters can all alter diatom taxonomic composition, the elemental composition of diatom cells, and the path cells follow through the food web ultimately altering diatom carbon export.</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> Diatoms and carbon export largerWorkCitation project eng; USA oceans Celtic Sea -15.008 -14.6885 48.78163 49.23415 2021-05-05 2021-05-27 Sub-Arctic Pacific, Ocean Station Papa 0 BCO-DMO catalogue of parameters from Dissolved trace metal and macronutrient concentrations from field samples collected during the EXPORTS North Atlantic campaign at the Porcupine Abyssal Plain-Sustained Observatory (PAP-SO) site on board the RRS Discovery (DY131) in May 2021 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/955045.rdf Name: CRUISE_ID Units: unitless Description: <p>Cruise identifier</p> http://lod.bco-dmo.org/id/dataset-parameter/955046.rdf Name: EVTNBR Units: unitless Description: <p>Event number for field sampling deployments, from ship log</p> http://lod.bco-dmo.org/id/dataset-parameter/955047.rdf Name: DATE_UTC Units: unitless Description: <p>Date of field sampling deployment in UTC time zone; ship time was set at UTC throughout cruise.</p> http://lod.bco-dmo.org/id/dataset-parameter/955048.rdf Name: TIME_UTC Units: unitless Description: <p>Time in UTC of field sampling deployment; ship time was set at UTC throughout cruise.</p> http://lod.bco-dmo.org/id/dataset-parameter/955049.rdf Name: ISO_DateTime_UTC Units: unitless Description: <p>Date and time (UTC) of field sampling deployment in ISO 8601 format</p> http://lod.bco-dmo.org/id/dataset-parameter/955050.rdf Name: JULIAN_DAY Units: unitless Description: <p>Julian Day of field sampling deployment.</p> http://lod.bco-dmo.org/id/dataset-parameter/955051.rdf Name: EPOCH Units: unitless Description: <p>Defined time block during the cruise, #1-3, during which field sampling was conducted.</p> http://lod.bco-dmo.org/id/dataset-parameter/955052.rdf Name: EPOCH_DAY Units: unitless Description: <p>Day within the epoch time block that field sampling was conducted.</p> http://lod.bco-dmo.org/id/dataset-parameter/955053.rdf Name: LATITUDE Units: decimal degrees Description: <p>Ship position when incubation setup water was collected in decimal °N</p> http://lod.bco-dmo.org/id/dataset-parameter/955054.rdf Name: LONGITUDE Units: decimal degrees Description: <p>Ship position when incubation setup water was collected in decimal °E</p> http://lod.bco-dmo.org/id/dataset-parameter/955055.rdf Name: PLATFORM Units: unitless Description: <p>Sampling system used for incubation setup water collection. TMC CTD = trace metal clean CTD rosette. FISH = towfish</p> http://lod.bco-dmo.org/id/dataset-parameter/955056.rdf Name: CASTNBR Units: unitless Description: <p>Cast number assigned in event log, specific to TMC rosette only. &#039;na&#039; for &#039;not applicable&#039; used for towfish deployments.</p> http://lod.bco-dmo.org/id/dataset-parameter/955057.rdf Name: STNNBR Units: unitless Description: <p>Station number assigned by EXPORTS program. Note that station A2-C was also the Lagrangian float calibration station. &#039;na&#039; for &#039;not applicable&#039; used for towfish deployments.</p> http://lod.bco-dmo.org/id/dataset-parameter/955058.rdf Name: BTLNBR Units: unitless Description: <p>Identification number of Niskin bottle used for sample collection from the TMC rosette. &#039;na&#039; for &#039;not applicable&#039; used for samples collected directly inline from the towfish.</p> http://lod.bco-dmo.org/id/dataset-parameter/955059.rdf Name: DEPTH Units: meters (m) Description: <p>Depth in meters of incubation setup water collection. Depth of towfish sampling estimated at 2 m in all cases.</p> http://lod.bco-dmo.org/id/dataset-parameter/955060.rdf Name: FILTER_SIZE Units: micrometers (um) Description: <p>Pore size of filter used to process field samples for dissolved trace metals. Note that samples for total dissolvable (TD) metals were all collected unfiltered and filtered through 0.4 um filters prior to analysis. See methods for details.</p> http://lod.bco-dmo.org/id/dataset-parameter/955061.rdf Name: SAMPLE_ID Units: unitless Description: <p>Unique identification assigned to each field sample.</p> http://lod.bco-dmo.org/id/dataset-parameter/955062.rdf Name: NO3_NO2_CONC Units: micromoles per liter (uM) Description: <p>Concentrations of dissolved nitrate+nitrite in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter. </p> http://lod.bco-dmo.org/id/dataset-parameter/955063.rdf Name: NO3_NO2_STDEV Units: micromoles per liter (uM) Description: <p>Standard deviation of replicate nitrate+nitrite concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955064.rdf Name: NO3_NO2_FLAG Units: unitless Description: <p>Quality flag for NO3_NO2.</p> http://lod.bco-dmo.org/id/dataset-parameter/955065.rdf Name: PO4_CONC Units: micromoles per liter (uM) Description: <p>Concentrations of dissolved phosphate in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955066.rdf Name: PO4_STDEV Units: micromoles per liter (uM) Description: <p>Standard deviation of replicate phosphate concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955067.rdf Name: PO4_FLAG Units: unitless Description: <p>Quality flag for PO4.</p> http://lod.bco-dmo.org/id/dataset-parameter/955068.rdf Name: SiO4_CONC Units: micromoles per liter (uM) Description: <p>Concentrations of dissolved silicic acid in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter. </p> http://lod.bco-dmo.org/id/dataset-parameter/955069.rdf Name: SiO4_STDEV Units: micromoles per liter (uM) Description: <p>Standard deviation of replicate silicate concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955070.rdf Name: SiO4_FLAG Units: unitless Description: <p>Quality flag for SiO4.</p> http://lod.bco-dmo.org/id/dataset-parameter/955071.rdf Name: NO2_CONC Units: micromoles per liter (uM) Description: <p>Concentrations of dissolved nitrite in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955072.rdf Name: NO2_STDEV Units: micromoles per liter (uM) Description: <p>Standard deviation of replicate dissolved nitrite concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955073.rdf Name: NO2_FLAG Units: unitless Description: <p>Quality flag for NO2.</p> http://lod.bco-dmo.org/id/dataset-parameter/955074.rdf Name: Mn_D_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved manganese (Mn) in field samples.</p> http://lod.bco-dmo.org/id/dataset-parameter/955075.rdf Name: Mn_D_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved manganese (Mn) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955076.rdf Name: Mn_D_FLAG Units: unitless Description: <p>Quality flag for Mn_D_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955077.rdf Name: Fe_D_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolved iron (Fe) in field samples. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955078.rdf Name: Fe_D_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolved iron (Fe) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955079.rdf Name: Fe_D_FLAG Units: unitless Description: <p>Quality flag for Fe_D_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955080.rdf Name: Co_D_UV_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of dissolved cobalt (Co) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955081.rdf Name: Co_D_UV_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate dissolved cobalt (Co) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955082.rdf Name: Co_D_UV_FLAG Units: unitless Description: <p>Quality flag for Co_D_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955083.rdf Name: Co_D_noUV_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of dissolved cobalt (Co) in field samples; samples were not UV-oxidized prior to measurement. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955084.rdf Name: Co_D_noUV_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate dissolved cobalt (Co) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955085.rdf Name: Co_D_noUV_FLAG Units: unitless Description: <p>Quality flag for Co_D_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955086.rdf Name: Ni_D_UV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved nickel (Ni) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955087.rdf Name: Ni_D_UV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved nickel (Ni) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955088.rdf Name: Ni_D_UV_FLAG Units: unitless Description: <p>Quality flag for Ni_D_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955089.rdf Name: Ni_D_noUV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved nickel (Ni) in field samples; samples were not UV-oxidized prior to measurement. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955090.rdf Name: Ni_D_noUV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved nickel (Ni) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955091.rdf Name: Ni_D_noUV_FLAG Units: unitless Description: <p>Quality flag for Ni_D_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955092.rdf Name: Cu_D_UV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved copper (Cu) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955093.rdf Name: Cu_D_UV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved copper (Cu) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955094.rdf Name: Cu_D_UV_FLAG Units: unitless Description: <p>Quality flag for Cu_D_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955095.rdf Name: Cu_D_noUV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved copper (Cu) in field samples; samples were not UV-oxidized prior to measurement. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955096.rdf Name: Cu_D_noUV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved copper (Cu) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955097.rdf Name: Cu_D_noUV_FLAG Units: unitless Description: <p>Quality flag for Cu_D_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955098.rdf Name: Zn_D_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of dissolved zinc (Zn) in field samples. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955099.rdf Name: Zn_D_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate dissolved zinc (Zn) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955100.rdf Name: Zn_D_FLAG Units: unitless Description: <p>Quality flag for Zn_D_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955101.rdf Name: Cd_D_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of dissolved cadmium (Cd) in field samples. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955102.rdf Name: Cd_D_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate dissolved cadmium (Cd) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955103.rdf Name: Cd_D_FLAG Units: unitless Description: <p>Quality flag for Cd_D_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955104.rdf Name: Pb_D_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of dissolved lead (Pb) in field samples. </p> http://lod.bco-dmo.org/id/dataset-parameter/955105.rdf Name: Pb_D_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate dissolved lead (Pb) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955106.rdf Name: Pb_D_FLAG Units: unitless Description: <p>Quality flag for Pb_D_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955107.rdf Name: Mn_TD_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable manganese (TD-Mn) in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955108.rdf Name: Mn_TD_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable manganese (TD-Mn) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955109.rdf Name: Mn_TD_FLAG Units: unitless Description: <p>Quality flag for Mn_TD_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955110.rdf Name: Fe_TD_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable iron (TD-Fe) in field samples. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955111.rdf Name: Fe_TD_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable iron (TD-Fe) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955112.rdf Name: Fe_TD_FLAG Units: unitless Description: <p>Quality flag for Fe_TD_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955113.rdf Name: Co_TD_UV_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of total dissolvable cobalt (TD-Co) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955114.rdf Name: Co_TD_UV_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate total dissolvable cobalt (TD-Co) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955115.rdf Name: Co_TD_UV_FLAG Units: unitless Description: <p>Quality flag for Co_TD_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955116.rdf Name: Co_TD_noUV_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of total dissolvable cobalt (TD-Co) in field samples; samples were not UV-oxidized prior to measurement. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955117.rdf Name: Co_TD_noUV_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate total dissolvable cobalt (TD-Co) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955118.rdf Name: Co_TD_noUV_FLAG Units: unitless Description: <p>Quality flag for Co_TD_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955119.rdf Name: Ni_TD_UV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable nickel (TD-Ni) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955120.rdf Name: Ni_TD_UV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable nickel (TD-Ni) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955121.rdf Name: Ni_TD_UV_FLAG Units: unitless Description: <p>Quality flag for Ni_TD_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955122.rdf Name: Ni_TD_noUV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable nickel (TD-Ni) in field samples; samples were not UV-oxidized prior to measurement. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955123.rdf Name: Ni_TD_noUV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable nickel (TD-Ni) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955124.rdf Name: Ni_TD_noUV_FLAG Units: unitless Description: <p>Quality flag for Ni_TD_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955125.rdf Name: Cu_TD_UV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable copper (TD-Cu) in field samples, measured after UV-oxidation. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955126.rdf Name: Cu_TD_UV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable copper (TD-Cu) measurements in samples that were UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955127.rdf Name: Cu_TD_UV_FLAG Units: unitless Description: <p>Quality flag for Cu_TD_UV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955128.rdf Name: Cu_TD_noUV_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable copper (TD-Cu) in field samples; samples were not UV-oxidized prior to measurement. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955129.rdf Name: Cu_TD_noUV_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable copper (TD-Cu) measurements in samples that were not UV-oxidized. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955130.rdf Name: Cu_TD_noUV_FLAG Units: unitless Description: <p>Quality flag for Cu_TD_noUV_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955131.rdf Name: Zn_TD_CONC Units: nanomoles per liter (nmol/L) Description: <p>Concentrations of total dissolvable zinc (TD-Zn) in field samples. ‘nda’ for ‘no data available’ used when sample was collected but no data has been obtained for this parameter. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955132.rdf Name: Zn_TD_STDEV Units: nanomoles per liter (nmol/L) Description: <p>Standard deviation of replicate total dissolvable zinc (TD-Zn) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955133.rdf Name: Zn_TD_FLAG Units: unitless Description: <p>Quality flag for Zn_TD_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955134.rdf Name: Cd_TD_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of total dissolvable cadmium (TD-Cd) in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955135.rdf Name: Cd_TD_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate total dissolvable cadmium (TD-Cd) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955136.rdf Name: Cd_TD_FLAG Units: unitless Description: <p>Quality flag for Cd_TD_CONC.</p> http://lod.bco-dmo.org/id/dataset-parameter/955137.rdf Name: Pb_TD_CONC Units: picomoles per liter (pmol/L) Description: <p>Concentrations of total dissolvable lead (TD-Pb) in field samples. &#039;na&#039; for &#039;not applicable’ used when no sample was collected for this parameter.</p> http://lod.bco-dmo.org/id/dataset-parameter/955138.rdf Name: Pb_TD_STDEV Units: picomoles per liter (pmol/L) Description: <p>Standard deviation of replicate total dissolvable lead (TD-Pb) measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p> http://lod.bco-dmo.org/id/dataset-parameter/955139.rdf Name: Pb_TD_FLAG Units: unitless Description: <p>Quality flag for Pb_TD_CONC.</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 63498 https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/2ed48a46-0edd-4af5-b25c-84537a7a6b01/content download https://doi.org/10.26008/1912/bco-dmo.954941.1 download onLine dataset &lt;p&gt;&lt;strong&gt;Sample Collection:&lt;/strong&gt;&lt;br /&gt; This work was funded by NSF and conducted in collaboration with the NASA EXPORTS campaign at Porcupine Abyssal Plain-Sustained Observatory (PAP-SO), which sampled the decline of the North Atlantic Spring Bloom (NASB) in May 2021 on board the RRS Discovery (Cruise ID: DY131). All sampling occurred within a retentive eddy named &quot;A2&quot;, with a deep anticyclonic structure. Field samples for dissolved (&amp;lt;0.4 or &amp;lt;0.2 micrometer (µm)) trace metals (Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb), and dissolved (&amp;lt;0.4 or &amp;lt;0.2 µm) macronutrients (P, N, Si) from surface and subsurface waters were collected as environmental context for the incubation experiments also conducted as part of this study.&lt;/p&gt; &lt;p&gt;All sampling was performed following trace metal clean procedures. Surface (~2 meters (m)) water was collected using a trace metal clean towfish that was sampled while underway at a speed of 4-6 knots (Mellett and Buck 2020). Surface dissolved trace metal and macronutrient samples were collected from the towfish while filling the 'Long-term' and 'Short-term' experiment incubation bottles, as follows: prior to filling the first set of carboys corresponding to the first replicate of the treatments (three replicates per treatment total), after filling the second set of carboys, after the third set, and after filling all replicate incubation carboys. These samples were filtered inline through a 0.2 µm (Pall Acropak) capsule filter. These samples are labelled &quot;Survey Samples&quot;.&lt;/p&gt; &lt;p&gt;Subsurface trace metal and macronutrient samples were collected using a trace metal clean rosette (TMC CTD) deployed on synthetic line and outfitted with modified trace metal clean x-Niskin bottles (12-liters (L), OceanTestEquipment, Inc.; Cutter et al. 2017). Samples for dissolved trace metal and macronutrient samples were filtered either inline through a &amp;lt;0.2 µm capsule filter (Pall Acropak) or filtered offline through sequential acid-cleaned polycarbonate track-etch (PCTE) filters (5 µm, 0.4 µm) in a dual stage filtration system (Savillex) on a custom acrylic base. For a subset of profiles, additional unfiltered (total dissolvable, TD) samples were collected and filtered offline after eighteen months of storage and prior to analysis (TD Savillex). All dissolved and total dissolvable trace metal samples were acidified to 0.024 M hydrochloric acid (Optima, Fisher) and stored at room temperature until analyzed at USF. All macronutrient samples were stored frozen (-20 degrees Celsius (ºC)) until analyzed in the lab at USF. Seven depth profiles were deployed during the cruise, and water from casts #1, #3, and #6 were used to collect seawater for the Grow-Out incubation experiments. All TMC CTD casts occurred between 11 am and 12 pm local ship time.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Analysis of dissolved and total dissolvable trace metals:&lt;/strong&gt;&lt;br /&gt; Sample analysis for dissolved trace metals was conducted at the University of South Florida (USF) College of Marine Science (CMS), and Florida State University (FSU) National High Magnetic Field Laboratory (MagLab). To prepare for analysis, dissolved trace metal samples were transferred to 30- or 15-milliliter (mL) perfluoroalkoxy (PFA) vials with caps containing a quartz-window to enable UV-oxidization. Samples were UV-oxidized at USF for 90 minutes at ~20 milliwatts per square centimeter (mW cm-2) with an UVO-Cleaner (Jelight; Model No. 5144AX) to liberate organically complexed dissolved Co and Cu (Milne et al. 2010). For cobalt, nickel, and copper, the UV-oxidized and non-UV-oxidized sample results are presented separately.&lt;/p&gt; &lt;p&gt;The automated seaFAST-pico (Elemental Scientific) with a Nobias Chelate-PA1 resin was connected to a High Resolution-Inductively Coupled Plasma-Mass Spectrometer (HR-ICP-MS; Thermo Scientific Element 2 at FSU, Element XR at USF), to preconcentrate and extract trace metals from the seawater samples inline (Lagerström et al. 2013). The reagents and input flow rates for seaFAST were followed from Hollister et al. (2020) and Burns et al. (2023). The elution acid in this study was a solution of 10% HNO3 (Optima) with 1 ppb Indium as the internal standard. Upon loading the buffered sample (pH ~ 6.2 ± 0.2; Burns et al. 2023) in the resin column, the column was rinsed with Milli-Q (≥18.2 MΩ·cm) to wash out seawater salts, and the chelated trace metals were eluted with the elution acid containing the internal standard. The eluent from seaFAST was then drawn by the ICP-MS and analyzed for the natural abundance of Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb. Samples were analyzed twice, on the Element 2 at FSU, and on the Element XR at USF.&lt;/p&gt; &lt;p&gt;All analytical runs were comprised of seawater samples, instrument-manifold air blanks, quality control (QC) samples, a matrix-matched multielement calibration curve containing all target metals, a matrix-matched molybdenum (Mo) calibration curve, and certified reference materials, including SAFe D2, GEOTRACES GSP, and NASS-7. All seawater calibration curves and reference samples were prepared and treated the same as the seawater samples throughout the analytical runs.&lt;/p&gt; &lt;p&gt;The in-house QC consisted of 2-L aliquots of filtered (&amp;lt;0.2 µm) PAP-SO surface seawater (49.20469 °N, -14.78163 °E) that was collected in bulk on the 2021 EXPORTS cruise and then subsampled and acidified to 0.024 M HCl (Optima) for each QC aliquot. The matrix-matched curves, including the multielement and Mo calibration curves, were made using the same seawater as the QC to match the matrix of the seawater samples. The matrix-matched multielement calibration curve was made by dilution from a set of working stocks containing the target metals. These working stocks were diluted from ICP primary standards of 1000 micrograms per milliliter (µg/mL) in 2% HNO3 of Mn (SPEX CertiPrep), Fe, Co, Ni, Cu, Cd (ULTRA Scientific), Zn and Pb (RICCA) diluted with 5% HNO3 (Optima, Fisher) elution acid matrix. The Mo ICP primary standard consisted of 1000 µg/mL Mo in H2O (SPEX CertiPrep), from which a Mo working stock was made by dilution with 5% HNO3 (Optima, Fisher).&lt;/p&gt; &lt;p&gt;The analytical runs usually began by conditioning the inline seaFAST-ICP-MS with a few samples of filtered seawater, followed by several air and MQ blanks, calibration curves including the multielement and Mo curves, certified reference materials (also included in the middle of each analytical run to allow replicate measurements), seawater samples, several QC samples spread throughout the analytical run (every ~15th sample), several additional air blanks, and finalized by air blank samples. Sample trace metal concentrations were determined from calibration curves of the intensity counts against standards of known concentrations and corrected for average air blanks in the sequence as described previously by Hollister et al. (2020) and Burns et al. (2023). All dissolved and total dissolvable trace metal analyses were performed by PhD student Delfina Navarro-Estrada with assistance from senior researcher Salvatore Caprara in the Buck lab at the University of South Florida.&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Analysis of dissolved macronutrients:&lt;/strong&gt;&lt;br /&gt; Macronutrient samples were thawed at room temperature and analyzed following standard colorimetric methods (Parsons et al. 1984; Becker et al. 2020) using a QuAAtro39 AutoAnalyzer (SEAL Analytical) at USF. The analytical runs included seawater samples, calibration curves made in artificial seawater, reagent blanks consisting of the artificial seawater used to make the calibration curves, reference materials including CK, CL, and CO (KANSO TECHNOS), and QC samples, including standards with known concentrations of nitrite and nitrate to check the efficiency of the instrument's cadmium column, and the lowest and middle-high standards of the calibration curve to check and correct for drift. QC samples were added approximately every 12th sample to assess the quality of the analytical run. The range in LODs for macronutrients were 0.006-0.048 micromolar (µM) for nitrate+nitrite, 0.011-0.042 µM for phosphate, 0.016-0.108 µM for silicic acid, and 0.004-0.027 µM for nitrite. Values below these limits of detection in each run are reported as 0 µM with accompanying QC Flag 6. Sample analyses for macronutrients were performed by senior researcher Salvatore Caprara in the Buck lab at the University of South Florida.&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;Data were flagged using the SeaDataNet quality flag scheme following GEOTRACES guidelines. See: &lt;a href=&quot;https://www.geotraces.org/geotraces-quality-flag-policy/&quot; target=&quot;_blank&quot;&gt;https://www.geotraces.org/geotraces-quality-flag-policy/&lt;/a&gt;. Additional notes specific to the application of these flags to this project are noted in brackets […].&lt;/p&gt; &lt;p&gt;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].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;1:&lt;/strong&gt; 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. [Used for analyses that included replicates and/or reference samples; see &lt;strong&gt;Table 1&amp;nbsp;&lt;/strong&gt;(Supplemental File) for blank and certified reference material values obtained in this study].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;2:&lt;/strong&gt; 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 or reference samples were available to check the quality of the data].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;3:&lt;/strong&gt; Probably Bad Value: Data value recognized as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena. [Not used].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;4:&lt;/strong&gt; Bad Value: An obviously erroneous data value. [Not used].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;5:&lt;/strong&gt; 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].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;6:&lt;/strong&gt; 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. [Values below the LOD are represented by &quot;0&quot;].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;7:&lt;/strong&gt; 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].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;8:&lt;/strong&gt; Interpolated Value: This value has been derived by interpolation from other values in the data object. [Not used].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;9:&lt;/strong&gt; 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].&lt;/p&gt; &lt;p&gt;&lt;strong&gt;A:&lt;/strong&gt; 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.]&lt;/p&gt; Specified by the Principal Investigator(s) - Imported original file &quot;BCO-DMO_EXPORTS-NA_FieldData_submit241207.xlsx&quot; into the BCO-DMO system. - Created date-time column in ISO 8601 format. - Saved final file as &quot;954941_v1_exports_na_nuts_and_tm_field_data.csv&quot;. 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 ThermoScientific Element II ThermoScientific Element II PI Supplied Instrument Name: ThermoScientific Element II PI Supplied Instrument Description:ThermoScientific Element II high resolution inductively coupled plasma mass spectrometer was used to measure dissolved metal concentrations. 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/ QuAAtro39 AutoAnalyzer (SEAL Analytical) QuAAtro39 AutoAnalyzer (SEAL Analytical) PI Supplied Instrument Name: QuAAtro39 AutoAnalyzer (SEAL Analytical) PI Supplied Instrument Description:QuAAtro39 AutoAnalyzer (SEAL Analytical) was used to measure macronutrient concentrations in seawater samples. 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/ Elemental Scientific seaFAST-pico system Elemental Scientific seaFAST-pico system PI Supplied Instrument Name: Elemental Scientific seaFAST-pico system PI Supplied Instrument Description:Elemental Scientific seaFAST-pico system was used to preconcentrate dissolved trace metals from project samples for the ICPMS analyses. Instrument Name: SeaFAST Automated Preconcentration System Instrument Short Name: Instrument Description: The seaFAST is an automated sample introduction system for analysis of seawater and other high matrix samples for analyses by ICPMS (Inductively Coupled Plasma Mass Spectrometry). ThermoScientific Element XR ThermoScientific Element XR PI Supplied Instrument Name: ThermoScientific Element XR PI Supplied Instrument Description:ThermoScientific Element XR high resolution inductively coupled plasma mass spectrometer was used to measure dissolved metal concentrations. Instrument Name: Thermo Scientific ELEMENT XR high resolution inductively coupled plasma mass spectrometer Instrument Short Name:Element XR HR-ICP-MS Instrument Description: A high-resolution (HR) inductively coupled plasma (ICP) mass spectrometer (MS) composed of a dual mode secondary electron multiplier (SEM) and a Faraday detector. The ELEMENT XR instrument has a dynamic range of 5 x 10^7 to 1 x 10^12 counts per second (cps), and allows simultaneous measurement of elements at concentrations over 1000 ug/g. Towfish Towfish PI Supplied Instrument Name: Towfish PI Supplied Instrument Description:Towfish: Seawater samples were collected with a custom surface sampling system, "towfish" (Mellett and Buck 2020), comprised of acid cleaned Bev-A-Line-IV tubing and an Almatec Double PTFE Diaphragm Pump. Instrument Name: towed unmanned submersible Instrument Short Name:towed unmanned submersible Instrument Description: A vehicle towed by rigid cable through the water column at fixed or varying depth with no propulsion and no human operator (e.g. Towfish, Scanfish, UOR, SeaSoar). Cruise: DY131 DY131 Community Standard Description International Council for the Exploration of the Sea RRS Discovery vessel DY131 Craig M. Lee University of Washington https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/dy131.pdf Report describing DY131 Community Standard Description International Council for the Exploration of the Sea RRS Discovery vessel