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     data   graph     files  public Dissolved and labile cobalt from the USCGC Healy HLY1502 in the Canada and Makarov Basins of
the Arctic Ocean from August to October 2015 (U.S. GEOTRACES Arctic project)
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_722472

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute NC_GLOBAL acquisition_description String Samples were collected using the ODU GEOTRACES Carousel (GT-C), filtered
through 0.2 um Acropak filters in the GEOTRACES clean van and immediately
refrigerated. Acid-washed 60 mL LDPE bottles were filled entirely, leaving no
headspace. Total dissolved cobalt samples were kept at ambient pH, preserved
in a heat-sealed bag containing gas absorbing satchels immediately after
sample collection and kept at 4 degrees C until analysis upon return to the
Woods Hole laboratory. Labile cobalt were kept at ambient pH, and sampled in
separate bottles stored in plastic bags without gas absorbing satchels at 4
degrees C.

The carousel was used to collect samples from surface to near bottom waters.
Additional samples were collected from a surface pump when sea ice conditions
permitted. Pre-conditioned, teflon-coated 12L Go-Flo sampling bottles (General
Oceanics, Miami, FL) were deployed on a polyurethane powder-coated aluminum
rosette with titanium pilings and pressure housings (Sea-Bird Electronics,
Inc., Bellevue, WA) attached to a Kevlar, non-metallic conducting cable. For
more information regarding carousel deployment, please refer to the GEOTRACES
Cookbook, cited below and located on the GEOTRACES Program website
([https://www.geotraces.org/](\\"https://www.geotraces.org/\\")). Following
carousel retrieval, Go-Flo bottles were moved to the GEOTRACES Program
class-100 trace metal clean van, and pressurized with HEPA filtered air for
sampling in accordance with published methods (Cutter and Bruland 2012).
Surface pump samples were collected by zodiac, and a trace metal clean
peristaltic pump following the GEOTRACES Program Cookbook sampling
recommendations, and in accordance with previous collection protocols (Bruland
et al. 2005).

Sample storage and reagent bottles were soaked for >1 week in the acidic
detergent Citranox, rinsed thoroughly with 18.2 M-Ohm Milli-Q water
(Millipore), filled with 10% HCl to soak for 10 days, and rinsed thoroughly
with Milli-Q water adjusted to pH 2 with TM-grade HCl. Reagent purification
protocols were identical to those previously published (Saito and Moffett
2001).

Concentrations of total dissolved cobalt and labile cobalt were determined
using a previously described cathodic stripping voltammetry (CSV) method
(Saito and Moffett 2001, Saito et al. 2004). Measurements were made using the
Eco-Chemie \u00b5AutolabIII systems connected to Metrohm 663 VA Stands
equipped with hanging mercury drop electrodes and Teflon sampling cups. Sample
preparation was modified slightly to accommodate use of a Metrohm 837 Sample
processor, operated with NOVA 1.8 software (Metrohm Autolab B.V.).

For total dissolved cobalt analyses, samples were UV-irradiated for 1 h prior
to analysis in a Metrohm 909 UV digester to degrade the organic ligands that
bind cobalt, enabling full chelation by the added electroactive ligand,
dimethylglyoxime (DMG). 11 ml of sample was pipetted into 15ml polypropylene
tubes. Recrystallized DMG (0.1M in methanol) was added to a final
concentration of 400 uM and purified
N-(2-hydroxyethyl)piperazine-N-(3-propanesulfonic acid) (EPPS) buffer (0.5 M
in Milli-Q water) was added to a final concentration of 3.8 mM. Tubes were
inverted several times before being placed in the autosampler queue, where 8.5
ml of the mixture was dosed into the teflon analysis cup using a 800 Dosino
automated burrette (Metrohm). 1.5 ml of purified sodium nitrite (1.5M in
Milli-Q water) was added directly to the Teflon cup using a dedicated 800
Dosino burrette. Once loaded, samples were purged with high purity (>99.99%)
N2 for 3 min and cobalt concentrations were determined by standard addition,
with triplicate measurement of the sample followed by four 25 pM cobalt
additions. 5 nM Co stock was diluted from a certified 1ppm reference (SPEX)
and added to the analysis cup via a third Dosino burrette.

For labile cobalt analyses, 11 ml of sample were pipetted into acid washed
teflon vials, preconditioned with a small aliquot of sample water. DMG was
added to a concentration of 400 uM and allowed to equilibrate for 8-16hr in
the dark prior to analysis (Saito et al. 2004). EPPS was added just prior to
measurement using the same standard addition protocol described above.
Previously, we determined that natural cobalt ligands in seawater have a
conditional stability constant of >10^16.8 (Saito et al. 2005). This suggests
that the cobalt is very strongly bound to ligands. Thus, we define labile
cobalt as the fraction of total dissolved cobalt that is either bound to weak
organic and inorganic ligands in seawater or present as free Co(II), and is
then exchangeable with the complexing agent (DMG) used for analysis (Saito et
al. 2004, Saito et al. 2005). The difference between the total dissolved
cobalt and the labile cobalt can then be used as an estimation of the strong
cobalt ligand concentration. The same electrode was used for both total and
labile analyses. Before transitioning from labile analyses to total analyses,
the autosampler tubing and Teflon cup were rinsed with Milli-Q water and pH2
HCl in Milli-Q water.

The analytical blank was determined by analyzing seawater that had been UV-
irradiated for 1 h, equilibrated overnight with prepared Chelex 100 resin
beads (Bio-Rad), and UV-irradiated a second time to degrade any leached
synthetic ligands. For in lab analyses, mean blank was 2.5 +/- 0.7 pM (n=19),
and the detection limit was 2.2 pM.

Intercalibration: GEOTRACES standard seawater and internal standard lab
seawater were analyzed periodically. A large batch of UV oligotrophic seawater
was generated prior to sample analyses and used as a primary standard during
measurements. This standard seawater was run along with each sample batch, as
were blanks, and values were consistent for the duration of analyses. Our
laboratory has participated in the GEOTRACES intercalibration effort using
this electrochemical Co method. Acidified standards were neutralized with
concentrated ammonium hydroxide (Seastar), mixing the entire sample between
drops, prior to UV digestion. We report our laboratory values for the
GEOTRACES and SAFe standard analyses using this electrochemical method to be:
SAFe D1 = 47.9 +/- 2.1 (n=3), SAFe D2 = 45.2 +/- 2.1 (n=3), GEOTRACES GSP =
2.4 +/- 1.8 (n=3), GEOTRACES GSC = 77.9 +/- 2.8 (n=3). These results are in
good agreement with those from the GEOTRACES intercalibration effort for Co
and demonstrate that the methodologies employed to produce this dataset detect
concentrations within the standard deviation of current consensus values for
UV irradiated samples, which can be found on the International GEOTRACES
Program website
([https://www.geotraces.org/](\\"https://www.geotraces.org/\\")).
attribute NC_GLOBAL awards_0_award_nid String 722367
attribute NC_GLOBAL awards_0_award_number String OCE-1435056
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1435056 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Henrietta N Edmonds
attribute NC_GLOBAL awards_0_program_manager_nid String 51517
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Dissolved and Labile Cobalt
U.S. GEOTRACES Arctic Cruise HLY1502 (GN01)
PI: Mak Saito (WHOI)
Version history:
07 July 2020. v2 (current) - replaced with GEOTRACES DOoR/IDP formatted file.
05 January 2018. v1. - original.
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL dataset_current_state String Final and no updates
attribute NC_GLOBAL date_created String 2018-01-05T19:27:28Z
attribute NC_GLOBAL date_modified String 2020-07-07T15:23:20Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.722472.2
attribute NC_GLOBAL Easternmost_Easting double 179.593
attribute NC_GLOBAL geospatial_lat_max double 89.995
attribute NC_GLOBAL geospatial_lat_min double 60.165
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double 179.593
attribute NC_GLOBAL geospatial_lon_min double -179.808
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 4198.9
attribute NC_GLOBAL geospatial_vertical_min double 1.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/722472 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String GO-FLO
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Pre-conditioned, teflon-coated 12L Go-Flo sampling bottles (General Oceanics, Miami, FL) were deployed on a polyurethane powder-coated aluminum rosette with titanium pilings and pressure housings (Sea-Bird Electronics, Inc., Bellevue, WA) attached to a Kevlar, non-metallic conducting cable.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 722591
attribute NC_GLOBAL instruments_0_description String 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.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/30/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String GO-FLO Bottle
attribute NC_GLOBAL instruments_0_instrument_nid String 411
attribute NC_GLOBAL instruments_1_acronym String Pump surface
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Surface pump samples were collected by zodiac, and a trace metal clean peristaltic pump following the GEOTRACES Program Cookbook sampling recommendations, and in accordance with previous collection protocols (Bruland et al. 2004).
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 722619
attribute NC_GLOBAL instruments_1_description String A source of uncontaminated near-surface seawater pumped onto the deck of the research vessel that can be sampled and analyzed. This pumped seawater supply is from an over-the-side pumping system, and is therefore different from the vessel underway seawater system.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/31/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Pump surface
attribute NC_GLOBAL instruments_1_instrument_nid String 619
attribute NC_GLOBAL instruments_2_acronym String Metrohm 663 VA
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Measurements were made using the Eco-Chemie µAutolabIII systems connected to Metrohm 663 VA Stands equipped with hanging mercury drop electrodes and Teflon sampling cups.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 722620
attribute NC_GLOBAL instruments_2_description String The Metrohm 663 VA stand forms the wet chemical part of a polarographic and voltammetric analytical system. It features a mercury electrode, an Ag/AgCl reference electrode and a glassy carbon counter electrode. The size of the mercury drop and the stirrer speed are set manually on the VA Stand. The VA Stand can be operated in Dropping Mercury Electrode (DME), Hanging Mercury Drop Electrode (HMDE) and Static Mercury Drop Electrode (SMDE) modes. The VA Stand can be controlled by a potentiostat in conjunction with the Metrohm IME663 interface.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0515/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Metrohm 663 VA Stand mercury electrode
attribute NC_GLOBAL instruments_2_instrument_nid String 697
attribute NC_GLOBAL instruments_3_acronym String Voltammetry Analyzers
attribute NC_GLOBAL instruments_3_dataset_instrument_description String Concentrations of total dissolved cobalt and labile cobalt were determined using a previously described cathodic stripping voltammetry (CSV) method (Saito and Moffett 2001, Saito et al. 2004). Measurements were made using the Eco-Chemie µAutolabIII systems connected to Metrohm 663 VA Stands equipped with hanging mercury drop electrodes and Teflon sampling cups.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 722621
attribute NC_GLOBAL instruments_3_description String Instruments that obtain information about an analyte by applying a potential and measuring the current produced in the analyte.
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB35/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Voltammetry Analyzers
attribute NC_GLOBAL instruments_3_instrument_nid String 698
attribute NC_GLOBAL keywords String 8zqltr, bco, bco-dmo, biological, boat, bottle, chemical, Co_D_CONC_BOAT_PUMP_cs8ogw, Co_D_CONC_BOTTLE_iojqqp, Co_DL_CONC_BOAT_PUMP_lthdda, Co_DL_CONC_BOTTLE_8zqltr, conc, cs8ogw, data, dataset, date, depth, dmo, end, End_Date_UTC, End_ISO_DateTime_UTC, End_Latitude, End_Longitude, End_Time_UTC, erddap, event, Event_ID, flag, Flag_Co_D_CONC_BOAT_PUMP_cs8ogw, Flag_Co_D_CONC_BOTTLE_iojqqp, Flag_Co_DL_CONC_BOAT_PUMP_lthdda, Flag_Co_DL_CONC_BOTTLE_8zqltr, iojqqp, iso, latitude, longitude, lthdda, management, oceanography, office, preliminary, pump, sample, Sample_Depth, Sample_ID, sd1, SD1_Co_D_CONC_BOAT_PUMP_cs8ogw, SD1_Co_D_CONC_BOTTLE_iojqqp, SD1_Co_DL_CONC_BOAT_PUMP_lthdda, SD1_Co_DL_CONC_BOTTLE_8zqltr, start, Start_ISO_DateTime_UTC, Start_Time_UTC, station, Station_ID, time
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/722472/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/722472 (external link)
attribute NC_GLOBAL Northernmost_Northing double 89.995
attribute NC_GLOBAL param_mapping String {'722472': {'Start_ISO_DateTime_UTC': 'flag - time', 'Sample_Depth': 'flag - depth', 'Start_Longitude': 'flag - longitude', 'Start_Latitude': 'flag - latitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/722472/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Mak A. Saito
attribute NC_GLOBAL people_0_person_nid String 50985
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String U.S. GEOTRACES Arctic,GEOTRACES Arctic Bioactive Trace Metals
attribute NC_GLOBAL projects_0_acronym String U.S. GEOTRACES Arctic
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
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.
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.
attribute NC_GLOBAL projects_0_end_date String 2017-06
attribute NC_GLOBAL projects_0_geolocation String Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor
attribute NC_GLOBAL projects_0_name String U.S. Arctic GEOTRACES Study
attribute NC_GLOBAL projects_0_project_nid String 638812
attribute NC_GLOBAL projects_0_start_date String 2014-07
attribute NC_GLOBAL projects_1_acronym String GEOTRACES Arctic Bioactive Trace Metals
attribute NC_GLOBAL projects_1_description String NSF Award Abstract:
In this project, a group of investigators participating in the 2015 U.S.GEOTRACES Arctic expedition will study the chemistry and regional distribution of seven trace metals in the Arctic Ocean: iron, manganese, zinc, cadmium, copper, nickel, and cobalt. These so-called bioactive metals are of special scientific interest because of their role in multiple biogeochemical processes including biological production of the sea and the planetary cycling of carbon and nitrogen. Like other multinational 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. This study in particular would contribute to our understanding of the sources and sinks of these seven bioactive metals as well as examine their interaction with biological processes. The project will focus on two major overarching research questions: (1) What are the sources and sinks for micronutrients and macronutrients in the Arctic? And (2) How does bioactive trace element nutrition influence productivity and species composition in the Arctic, and conversely, how do biological processes influence the cycling of these metals? In terms of broader impacts, the PIs on this project will be actively involved in educational outreach efforts, and the research team itself will include two postdoctoral researchers and a graduate student. The team leaders also plan to publish a children's ocean education book based on the expedition with the aim of generating next-generation excitement about modern ocean science
With regard to technical specifics, the research team will measure the dissolved seawater phases of the bioactive metals Fe, Mn, Zn, Cd, Cu, Ni, and Co, the dissolved stable metal isotopes 56Fe, 66Zn, and 114Cd, and the chemical speciation of Co. The recent development of methods for multi-element and multi-isotope analysis methods, in conjunction with the high-resolution sampling of the GEOTRACES program, make it possible to efficiently produce this dense dataset of metals and metal isotopes. This will be a team-based approach to achieve comprehensive duplication for analysis of the key parameters of dissolved metal concentrations. Each investigator will further conduct specialized additional measurements of metal isotopes and dissolved Co (which has unique analytical challenges) and Co speciation. Interpretation of these rich datasets would will be directed toward determination of sources and sinks as well as their ecological stoichiometry, in collaboration with other U.S.GEOTRACES participants measuring synergistic parameters. Together, this Arctic Ocean bioactive trace metal dataset is expected to provide an important contribution to the understanding of micronutrient roles in Arctic biogeochemical processes. These results should also be highly relevant to research studies of the ancient ocean, in which trace-metal analyses are commonly used to trace a wide variety of processes including paleo-ocean circulation and biological productivity. Finally, understanding the sources and sinks for elements in the modern ocean is key to predicting how the concentrations of bioactive elements might vary in a changing future climate.
attribute NC_GLOBAL projects_1_end_date String 2019-11
attribute NC_GLOBAL projects_1_geolocation String Arctic Ocean
attribute NC_GLOBAL projects_1_name String Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean
attribute NC_GLOBAL projects_1_project_nid String 722368
attribute NC_GLOBAL projects_1_start_date String 2014-12
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 60.165
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Dissolved and labile cobalt from the USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean from August to October 2015 (U.S. GEOTRACES Arctic project).
attribute NC_GLOBAL time_coverage_start String 2015-08-12T15:54:00Z
attribute NC_GLOBAL title String Dissolved and labile cobalt from the USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean from August to October 2015 (U.S. GEOTRACES Arctic project)
attribute NC_GLOBAL version String 2
attribute NC_GLOBAL Westernmost_Easting double -179.808
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.5
variable Station_ID   byte  
attribute Station_ID _FillValue byte 127
attribute Station_ID actual_range byte 1, 66
attribute Station_ID bcodmo_name String station
attribute Station_ID description String Station number
attribute Station_ID long_name String Station ID
attribute Station_ID units String unitless
variable Start_Date_UTC   String  
attribute Start_Date_UTC bcodmo_name String date
attribute Start_Date_UTC description String Sampling start date (UTC); format: MM/DD/YYYY
attribute Start_Date_UTC long_name String Start Date UTC
attribute Start_Date_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute Start_Date_UTC source_name String Start_Date_UTC
attribute Start_Date_UTC time_precision String 1970-01-01
attribute Start_Date_UTC units String unitless
variable Start_Time_UTC   String  
attribute Start_Time_UTC bcodmo_name String time
attribute Start_Time_UTC description String Sampling start time (UTC); format: hh:mm
attribute Start_Time_UTC long_name String Start Time UTC
attribute Start_Time_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute Start_Time_UTC units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.43939484E9, NaN
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Sampling start date/time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmz
attribute time ioos_category String Time
attribute time long_name String Start ISO Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable End_Date_UTC   String  
attribute End_Date_UTC bcodmo_name String date
attribute End_Date_UTC description String Sampling end date (UTC); format: MM/DD/YYYY
attribute End_Date_UTC long_name String End Date UTC
attribute End_Date_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute End_Date_UTC time_precision String 1970-01-01
attribute End_Date_UTC units String unitless
variable End_Time_UTC   String  
attribute End_Time_UTC bcodmo_name String time
attribute End_Time_UTC description String Sampling end time (UTC); format: hh:mm
attribute End_Time_UTC long_name String End Time UTC
attribute End_Time_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute End_Time_UTC units String unitless
variable End_ISO_DateTime_UTC   String  
attribute End_ISO_DateTime_UTC bcodmo_name String ISO_DateTime_UTC
attribute End_ISO_DateTime_UTC description String Sampling endt date/time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmz
attribute End_ISO_DateTime_UTC long_name String End ISO Date Time UTC
attribute End_ISO_DateTime_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute End_ISO_DateTime_UTC units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 60.165, 89.995
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Sampling start latitude
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude source_name String Start_Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -179.808, 179.593
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Sampling start longitude
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude source_name String Start_Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable End_Latitude   float  
attribute End_Latitude _FillValue float NaN
attribute End_Latitude actual_range float 60.165, 89.995
attribute End_Latitude bcodmo_name String latitude
attribute End_Latitude colorBarMaximum double 90.0
attribute End_Latitude colorBarMinimum double -90.0
attribute End_Latitude description String Sampling end latitude
attribute End_Latitude long_name String Latitude
attribute End_Latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute End_Latitude standard_name String latitude
attribute End_Latitude units String decimal degrees North
variable End_Longitude   float  
attribute End_Longitude _FillValue float NaN
attribute End_Longitude actual_range float -179.808, 179.593
attribute End_Longitude bcodmo_name String longitude
attribute End_Longitude colorBarMaximum double 180.0
attribute End_Longitude colorBarMinimum double -180.0
attribute End_Longitude description String Sampling end longitude
attribute End_Longitude long_name String Longitude
attribute End_Longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute End_Longitude standard_name String longitude
attribute End_Longitude units String decimal degrees East
variable Event_ID   short  
attribute Event_ID _FillValue short 32767
attribute Event_ID actual_range short 6009, 6491
attribute Event_ID bcodmo_name String event
attribute Event_ID description String GEOTRACES event number
attribute Event_ID long_name String Event ID
attribute Event_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute Event_ID units String unitless
variable Sample_ID   short  
attribute Sample_ID _FillValue short 32767
attribute Sample_ID actual_range short 10471, 12314
attribute Sample_ID bcodmo_name String sample
attribute Sample_ID description String GEOTRACES sample number
attribute Sample_ID long_name String Sample ID
attribute Sample_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Sample_ID units String unitless
variable depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 1.0, 4198.9
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth description String Sample depth
attribute depth ioos_category String Location
attribute depth long_name String Sample Depth
attribute depth nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable Co_D_CONC_BOTTLE_iojqqp   float  
attribute Co_D_CONC_BOTTLE_iojqqp _FillValue float NaN
attribute Co_D_CONC_BOTTLE_iojqqp actual_range float 19.4, 1852.1
attribute Co_D_CONC_BOTTLE_iojqqp bcodmo_name String trace_metal_conc
attribute Co_D_CONC_BOTTLE_iojqqp description String Concentration of dissolved Cobalt in bottle samples
attribute Co_D_CONC_BOTTLE_iojqqp long_name String Co D CONC BOTTLE Iojqqp
attribute Co_D_CONC_BOTTLE_iojqqp nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute Co_D_CONC_BOTTLE_iojqqp units String picomoles per liter (pmol/L)
variable SD1_Co_D_CONC_BOTTLE_iojqqp   byte  
attribute SD1_Co_D_CONC_BOTTLE_iojqqp _FillValue byte 127
attribute SD1_Co_D_CONC_BOTTLE_iojqqp actual_range byte 2, 2
attribute SD1_Co_D_CONC_BOTTLE_iojqqp bcodmo_name String trace_metal_conc
attribute SD1_Co_D_CONC_BOTTLE_iojqqp description String One standard deviation of Co_D_CONC_BOTTLE_iojqqp
attribute SD1_Co_D_CONC_BOTTLE_iojqqp long_name String SD1 Co D CONC BOTTLE Iojqqp
attribute SD1_Co_D_CONC_BOTTLE_iojqqp nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute SD1_Co_D_CONC_BOTTLE_iojqqp units String picomoles per liter (pmol/L)
variable Flag_Co_D_CONC_BOTTLE_iojqqp   byte  
attribute Flag_Co_D_CONC_BOTTLE_iojqqp _FillValue byte 127
attribute Flag_Co_D_CONC_BOTTLE_iojqqp actual_range byte 1, 3
attribute Flag_Co_D_CONC_BOTTLE_iojqqp bcodmo_name String q_flag
attribute Flag_Co_D_CONC_BOTTLE_iojqqp colorBarMaximum double 150.0
attribute Flag_Co_D_CONC_BOTTLE_iojqqp colorBarMinimum double 0.0
attribute Flag_Co_D_CONC_BOTTLE_iojqqp description String Quality flag for Co_D_CONC_BOTTLE_iojqqp
attribute Flag_Co_D_CONC_BOTTLE_iojqqp long_name String Flag Co D CONC BOTTLE Iojqqp
attribute Flag_Co_D_CONC_BOTTLE_iojqqp units String unitless
variable Co_DL_CONC_BOTTLE_8zqltr   float  
attribute Co_DL_CONC_BOTTLE_8zqltr _FillValue float NaN
attribute Co_DL_CONC_BOTTLE_8zqltr actual_range float 0.04, 650.6
attribute Co_DL_CONC_BOTTLE_8zqltr bcodmo_name String trace_metal_conc
attribute Co_DL_CONC_BOTTLE_8zqltr description String Concentration of dissolved labile Cobalt in bottle samples
attribute Co_DL_CONC_BOTTLE_8zqltr long_name String Co DL CONC BOTTLE 8zqltr
attribute Co_DL_CONC_BOTTLE_8zqltr nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute Co_DL_CONC_BOTTLE_8zqltr units String picomoles per liter (pmol/L)
variable SD1_Co_DL_CONC_BOTTLE_8zqltr   byte  
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr _FillValue byte 127
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr actual_range byte 2, 2
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr bcodmo_name String trace_metal_conc
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr description String One standard deviation of Co_DL_CONC_BOTTLE_8zqltr
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr long_name String SD1 Co DL CONC BOTTLE 8zqltr
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute SD1_Co_DL_CONC_BOTTLE_8zqltr units String picomoles per liter (pmol/L)
variable Flag_Co_DL_CONC_BOTTLE_8zqltr   byte  
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr _FillValue byte 127
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr actual_range byte 1, 10
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr bcodmo_name String q_flag
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr colorBarMaximum double 150.0
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr colorBarMinimum double 0.0
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr description String Quality flag for Co_DL_CONC_BOTTLE_8zqltr
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr long_name String Flag Co DL CONC BOTTLE 8zqltr
attribute Flag_Co_DL_CONC_BOTTLE_8zqltr units String unitless
variable Co_D_CONC_BOAT_PUMP_cs8ogw   float  
attribute Co_D_CONC_BOAT_PUMP_cs8ogw _FillValue float NaN
attribute Co_D_CONC_BOAT_PUMP_cs8ogw actual_range float 108.2, 849.0
attribute Co_D_CONC_BOAT_PUMP_cs8ogw bcodmo_name String trace_metal_conc
attribute Co_D_CONC_BOAT_PUMP_cs8ogw description String Concentration of dissolved Cobalt in samples collected from a small boat using a pump
attribute Co_D_CONC_BOAT_PUMP_cs8ogw long_name String Co D CONC BOAT PUMP Cs8ogw
attribute Co_D_CONC_BOAT_PUMP_cs8ogw nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute Co_D_CONC_BOAT_PUMP_cs8ogw units String picomoles per liter (pmol/L)
variable SD1_Co_D_CONC_BOAT_PUMP_cs8ogw   byte  
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw _FillValue byte 127
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw actual_range byte 2, 2
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw bcodmo_name String trace_metal_conc
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw description String One standard deviation of Co_D_CONC_BOAT_PUMP_cs8ogw
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw long_name String SD1 Co D CONC BOAT PUMP Cs8ogw
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute SD1_Co_D_CONC_BOAT_PUMP_cs8ogw units String picomoles per liter (pmol/L)
variable Flag_Co_D_CONC_BOAT_PUMP_cs8ogw   byte  
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw _FillValue byte 127
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw actual_range byte 1, 1
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw bcodmo_name String q_flag
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw colorBarMaximum double 150.0
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw colorBarMinimum double 0.0
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw description String Quality flag for Co_D_CONC_BOAT_PUMP_cs8ogw
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw long_name String Flag Co D CONC BOAT PUMP Cs8ogw
attribute Flag_Co_D_CONC_BOAT_PUMP_cs8ogw units String unitless
variable Co_DL_CONC_BOAT_PUMP_lthdda   float  
attribute Co_DL_CONC_BOAT_PUMP_lthdda _FillValue float NaN
attribute Co_DL_CONC_BOAT_PUMP_lthdda actual_range float 15.2, 207.8
attribute Co_DL_CONC_BOAT_PUMP_lthdda bcodmo_name String trace_metal_conc
attribute Co_DL_CONC_BOAT_PUMP_lthdda description String Concentration of dissolved labile Cobalt in samples collected from a small boat using a pump
attribute Co_DL_CONC_BOAT_PUMP_lthdda long_name String Co DL CONC BOAT PUMP Lthdda
attribute Co_DL_CONC_BOAT_PUMP_lthdda nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute Co_DL_CONC_BOAT_PUMP_lthdda units String picomoles per liter (pmol/L)
variable SD1_Co_DL_CONC_BOAT_PUMP_lthdda   byte  
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda _FillValue byte 127
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda actual_range byte 2, 2
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda bcodmo_name String trace_metal_conc
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda description String One standard deviation of Co_DL_CONC_BOAT_PUMP_lthdda
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda long_name String SD1 Co DL CONC BOAT PUMP Lthdda
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)
attribute SD1_Co_DL_CONC_BOAT_PUMP_lthdda units String picomoles per liter (pmol/L)
variable Flag_Co_DL_CONC_BOAT_PUMP_lthdda   byte  
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda _FillValue byte 127
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda actual_range byte 1, 2
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda bcodmo_name String q_flag
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda colorBarMaximum double 150.0
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda colorBarMinimum double 0.0
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda description String Quality flag for Co_DL_CONC_BOAT_PUMP_lthdda
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda long_name String Flag Co DL CONC BOAT PUMP Lthdda
attribute Flag_Co_DL_CONC_BOAT_PUMP_lthdda units String unitless

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