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Title Sum-
RSS Institution Dataset ID
   set  data   graph     files  public Cellular elemental content of individual phytoplankton cells collected during US GEOTRACES
North Atlantic Transect cruises in the Subtropical western and eastern North Atlantic Ocean
during Oct and Nov, 2010 and Nov. 2011
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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 SXRF samples were prepared from unfiltered water taken from GEOTRACES GO-Flo
bottles at the shallowest depth and deep chlorophyll maximum. Cells were
preserved with 0.25% trace-metal clean buffered glutaraldehyde and centrifuged
onto C/formvar-coated Au TEM grids. Grids were briefly rinsed with a drop of
ultrapure water and dried in a Class-100 cabinet. SXRF analysis was performed
using the 2-ID-E beamline at the Advanced Photon source (Argonne National
Laboratory) following the protocols of Twining et al. (2011).
attribute NC_GLOBAL awards_0_award_nid String 55138
attribute NC_GLOBAL awards_0_award_number String OCE-0928289
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0928289&HistoricalAwards=false (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 Dr Donald L. Rice
attribute NC_GLOBAL awards_0_program_manager_nid String 51467
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Please note that data may not be final, pending intercalibration results and
further analysis. If you are interested in following changes to US GEOTRACES
NAT data, there is an RSS feed available via the BCO-DMO US GEOTRACES
<a href="https://www.bco-dmo.org/project/2066" target="_blank">project page</a>.

GT10-11 - cellular element quotas
B. Twining (Bigelow)
version 2 (2015-02-17): revised station 9 depths: sample 5636 from 50m to 28m and 5638 from 28m to 50m.
replaces version 2015-02-10.
Sorted by cruise, station, grid#
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 2.2d 13 Jun 2019
attribute NC_GLOBAL date_created String 2015-02-04T20:45:08Z
attribute NC_GLOBAL date_modified String 2016-06-14T18:13:05Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.641155
attribute NC_GLOBAL Easternmost_Easting double -18.2545
attribute NC_GLOBAL geospatial_lat_max double 39.68403
attribute NC_GLOBAL geospatial_lat_min double 17.3505
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -18.2545
attribute NC_GLOBAL geospatial_lon_min double -69.8139
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 106.2
attribute NC_GLOBAL geospatial_vertical_min double 28.0
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/549122 (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_nid String 643392
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 GeoFish
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 643393
attribute NC_GLOBAL instruments_1_description String The GeoFish towed sampler is a custom designed near surface (
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 GeoFish Towed near-Surface Sampler
attribute NC_GLOBAL instruments_1_instrument_nid String 549
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 643394
attribute NC_GLOBAL instruments_2_description String Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB05/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Microscope-Optical
attribute NC_GLOBAL instruments_2_instrument_nid String 708
attribute NC_GLOBAL instruments_3_acronym String XRF analyzer
attribute NC_GLOBAL instruments_3_dataset_instrument_description String SXRF analysis was performed on the 2-ID-E beamline at the Advanced Photon source (Argonne National Laboratory). The synchetron consists of a storage ring which produces high energy electromagnetic radiation. X-rays diverted to the 2-ID-E beamline are used for x-ray fluorescence mapping of biological samples. X-rays were tuned to an energy of 10 keV to enable the excition of K-alpha fluorescence for the elements reported. The beam is focused using Fresnel zoneplates to achieve high spatial resolution; for our application a focused spot size of 0.5um was used. A single element germanium energy dispersive detector is used to record the X-ray fluorescence spectrum.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 648912
attribute NC_GLOBAL instruments_3_description String Instruments that identify and quantify the elemental constituents of a sample from the spectrum of electromagnetic radiation emitted by the atoms in the sample when excited by X-ray radiation.
attribute NC_GLOBAL instruments_3_instrument_name String X-ray fluorescence analyzer
attribute NC_GLOBAL instruments_3_instrument_nid String 648910
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, bottle, bottle_GEOTRC, btl, BTL_ISO_DateTime_UTC, cast, cast_GEOTRC, cell, cell_C, cell_Co, cell_Cu, cell_Fe, cell_Mn, cell_Ni, cell_P, cell_S, cell_Si, cell_type, cell_vol, cell_Zn, chemical, chemistry, chl, chl_image_filename, chlorophyll, concentration, cruise, cruise_id, data, dataset, date, depth, depth_GEOTRC_CTD, depth_GEOTRC_CTD_round, dissolved, dissolved nutrients, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Silicate, erddap, event, event_GEOTRC, filename, geotrc, grid, grid_num, grid_type, identifier, image, iso, latitude, light, light_image_filename, longitude, management, map, mass, mass_concentration_of_silicate_in_sea_water, mda, mda_id, num, nutrients, ocean, oceanography, oceans, office, preliminary, project, run, sample, sample_bottle_GEOTRC, sample_GEOTRC, science, sea, seawater, silicate, spectrum, sta, sta_PI, station, station_GEOTRC, sxrf, SXRF_map_filename, SXRF_run, SXRF_spectrum_filename, time, type, vol, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/549122 (external link)
attribute NC_GLOBAL Northernmost_Northing double 39.68403
attribute NC_GLOBAL param_mapping String {'549122': {'depth_GEOTRC_CTD': 'flag - depth', 'lat': 'master - latitude', 'BTL_ISO_DateTime_UTC': 'master - time', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/549122/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Bigelow Laboratory for Ocean Sciences
attribute NC_GLOBAL people_0_person_name String Benjamin Twining
attribute NC_GLOBAL people_0_person_nid String 51087
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 Nancy Copley
attribute NC_GLOBAL people_1_person_nid String 50396
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 North Atlantic Transect
attribute NC_GLOBAL projects_0_acronym String U.S. GEOTRACES NAT
attribute NC_GLOBAL projects_0_description String Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.
The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the "origin" of the global Meridional Overturning Circulation.
It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these "exotic" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the "fulldepth TEI" stations, and constitute approximately half of the stations to be ultimately occupied.
Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]
Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.
The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).
KN199-04 Cruise Report (PDF)
Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010.� The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]
The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).
KN204-01A,B Cruise Report (PDF)
Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011.� [click on the image to view a larger version]
Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: Standards and Reference Materials
ADCP data are available from the Currents ADCP group at the University of Hawaii at the links below:KN199-04�� (leg 1 of 2010 cruise; Lisbon to Cape Verde)KN199-05�� (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)KN204-01A (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)KN204-01B (part 2 of 2011 cruise; Bermuda to Cape Verde)
attribute NC_GLOBAL projects_0_end_date String 2013-08
attribute NC_GLOBAL projects_0_geolocation String Subtropical western and eastern North Atlantic Ocean
attribute NC_GLOBAL projects_0_name String U.S. GEOTRACES North Atlantic Transect
attribute NC_GLOBAL projects_0_project_nid String 2066
attribute NC_GLOBAL projects_0_project_website String http://www.geotraces.org/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2010-10
attribute NC_GLOBAL publisher_name String Nancy Copley
attribute NC_GLOBAL publisher_role String BCO-DMO Data Manager(s)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 17.3505
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL subsetVariables String project
attribute NC_GLOBAL summary String Individual phytoplankton cells were collected on the GEOTRACES North Atlantic
Transect cruises were analyzed for elemental content using SXRF (Synchrotron
radiation X-Ray Fluorescence). Carbon was calculated from biovolume using the
relationships of Menden-Deuer & Lessard (2000). Trace metal concentrations are

Download zipped images:
[SXRF maps](\\http://data.bco-dmo.org/GEOTRACES/Twining/SXRF_map.zip\\)
[SXRF spectra](\\http://data.bco-

Related references:

Menden-Deuer, S. and E. J. Lessard (2000). Carbon to volume relationships for
dinoflagellates, diatoms, and other protist plankton. Limnology and
Oceanography 45(3): 569-579.

* Twining, B. S., S. Rauschenberg, P. L. Morton, and S. Vogt. 2015. Metal contents of phytoplankton and labile particulate material in the North Atlantic Ocean. Progress in Oceanography 137: 261-283.)
attribute NC_GLOBAL time_coverage_start String 2010-10-21T17:08:00Z
attribute NC_GLOBAL title String Cellular elemental content of individual phytoplankton cells collected during US GEOTRACES North Atlantic Transect cruises in the Subtropical western and eastern North Atlantic Ocean during Oct and Nov, 2010 and Nov. 2011
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -69.8139
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.5-beta
variable cruise_id   String  
attribute cruise_id description String cruise identification
attribute cruise_id ioos_category String Identifier
attribute cruise_id long_name String Cruise Id
attribute cruise_id units String unitless
variable project   String  
attribute project description String GEOTRACES project: North Atlantic Zonal Transect
attribute project ioos_category String Identifier
attribute project long_name String Project
attribute project units String unitless
variable station_GEOTRC   byte  
attribute station_GEOTRC _FillValue byte 127
attribute station_GEOTRC actual_range byte 1, 20
attribute station_GEOTRC description String GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. Some GeoFish stations are denoted as X_to_Y indicating the tow occurred between stations X and Y. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute station_GEOTRC ioos_category String Unknown
attribute station_GEOTRC long_name String Station GEOTRC
attribute station_GEOTRC units String unitless
variable sta_PI   short  
attribute sta_PI _FillValue short 32767
attribute sta_PI actual_range short 1, 153
attribute sta_PI description String station number given by PI
attribute sta_PI ioos_category String Identifier
attribute sta_PI long_name String Sta PI
attribute sta_PI units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 17.3505, 39.68403
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String station latitude; north is positive
attribute latitude ioos_category String Location
attribute latitude long_name String 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 -69.8139, -18.2545
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String station longitude; east is postive
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable cast_GEOTRC   byte  
attribute cast_GEOTRC _FillValue byte 127
attribute cast_GEOTRC actual_range byte 1, 9
attribute cast_GEOTRC description String Cast identifier; numbered consecutively within a station. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute cast_GEOTRC ioos_category String Unknown
attribute cast_GEOTRC long_name String Cast GEOTRC
attribute cast_GEOTRC units String unitless
variable event_GEOTRC   short  
attribute event_GEOTRC _FillValue short 32767
attribute event_GEOTRC actual_range short 2084, 3222
attribute event_GEOTRC description String Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute event_GEOTRC ioos_category String Unknown
attribute event_GEOTRC long_name String Event GEOTRC
attribute event_GEOTRC 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 28.0, 106.2
attribute depth axis String Z
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String Observation/sample depth in meters; calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable depth_GEOTRC_CTD_round   byte  
attribute depth_GEOTRC_CTD_round _FillValue byte 127
attribute depth_GEOTRC_CTD_round actual_range byte 28, 106
attribute depth_GEOTRC_CTD_round colorBarMaximum double 8000.0
attribute depth_GEOTRC_CTD_round colorBarMinimum double -8000.0
attribute depth_GEOTRC_CTD_round colorBarPalette String TopographyDepth
attribute depth_GEOTRC_CTD_round description String Rounded observation/sample depth in meters; calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute depth_GEOTRC_CTD_round ioos_category String Location
attribute depth_GEOTRC_CTD_round long_name String Depth
attribute depth_GEOTRC_CTD_round standard_name String depth
attribute depth_GEOTRC_CTD_round units String meters
variable sample_GEOTRC   short  
attribute sample_GEOTRC _FillValue short 32767
attribute sample_GEOTRC actual_range short 5331, 7704
attribute sample_GEOTRC description String Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'GEOTRACES #'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute sample_GEOTRC ioos_category String Unknown
attribute sample_GEOTRC long_name String Sample GEOTRC
attribute sample_GEOTRC units String unitless
variable sample_bottle_GEOTRC   byte  
attribute sample_bottle_GEOTRC _FillValue byte 127
attribute sample_bottle_GEOTRC actual_range byte 18, 24
attribute sample_bottle_GEOTRC description String Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute sample_bottle_GEOTRC ioos_category String Unknown
attribute sample_bottle_GEOTRC long_name String Sample Bottle GEOTRC
attribute sample_bottle_GEOTRC units String unitless
variable bottle_GEOTRC   String  
attribute bottle_GEOTRC description String Alphanumeric characters identifying bottle type (e.g. NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute bottle_GEOTRC ioos_category String Unknown
attribute bottle_GEOTRC long_name String Bottle GEOTRC
attribute bottle_GEOTRC units String unitless
variable grid_type   String  
attribute grid_type description String grid type: plankton samples were mounted onto either gold (Au) or aluminum (Al) electron microscopy grids
attribute grid_type ioos_category String Unknown
attribute grid_type long_name String Grid Type
attribute grid_type units String unitless
variable grid_num   String  
attribute grid_num description String GEOTRACES bottle number followed by an internal designation for the grid
attribute grid_num ioos_category String Unknown
attribute grid_num long_name String Grid Num
attribute grid_num units String unitless
variable SXRF_run   String  
attribute SXRF_run description String samples were analyzed by synchrotron x-ray fluorescence (SXRF) during two analytical runs in July 2011 (2011r2) or August 2012 (2012r2).
attribute SXRF_run ioos_category String Unknown
attribute SXRF_run long_name String SXRF Run
attribute SXRF_run units String unitless
variable mda_id   String  
attribute mda_id description String unique identifier given to each SXRF scan during each run
attribute mda_id ioos_category String Identifier
attribute mda_id long_name String Mda Id
attribute mda_id units String unitless
variable cell_type   String  
attribute cell_type description String each cell was classified as either an autotrophic flagellate (Aflag); autotrophic picoplankter (Apico); or a diatom.
attribute cell_type ioos_category String Unknown
attribute cell_type long_name String Cell Type
attribute cell_type units String unitless
variable cell_vol   float  
attribute cell_vol _FillValue float NaN
attribute cell_vol actual_range float 1.33, 1980.45
attribute cell_vol description String biovolume of each cell estimated from microscope measurements of cell dimensions
attribute cell_vol ioos_category String Unknown
attribute cell_vol long_name String Cell Vol
attribute cell_vol units String um^3
variable cell_C   float  
attribute cell_C _FillValue float NaN
attribute cell_C actual_range float 2.35E-14, 1.35E-11
attribute cell_C description String cellular C content calculated from biovolume using the relationships of Menden-Deuer & Lessard (2000)
attribute cell_C ioos_category String Unknown
attribute cell_C long_name String Cell C
attribute cell_C units String mol/cell
variable cell_Si   double  
attribute cell_Si _FillValue double NaN
attribute cell_Si actual_range double 0.0, 1.61E-12
attribute cell_Si description String total elemental Si content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Si ioos_category String Dissolved Nutrients
attribute cell_Si long_name String Mass Concentration Of Silicate In Sea Water
attribute cell_Si units String mol/cell
variable cell_P   double  
attribute cell_P _FillValue double NaN
attribute cell_P actual_range double 1.1E-17, 3.31E-13
attribute cell_P description String total elemental P content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_P ioos_category String Unknown
attribute cell_P long_name String Cell P
attribute cell_P units String mol/cell
variable cell_S   float  
attribute cell_S _FillValue float NaN
attribute cell_S actual_range float 1.39E-16, 1.11E-13
attribute cell_S description String total elemental S content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_S ioos_category String Unknown
attribute cell_S long_name String Cell S
attribute cell_S units String mol/cell
variable cell_Mn   double  
attribute cell_Mn _FillValue double NaN
attribute cell_Mn actual_range double 3.66E-21, 9.54E-16
attribute cell_Mn description String total elemental Mn content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Mn ioos_category String Unknown
attribute cell_Mn long_name String Cell Mn
attribute cell_Mn units String mol/cell
variable cell_Fe   double  
attribute cell_Fe _FillValue double NaN
attribute cell_Fe actual_range double 3.37E-19, 2.92E-15
attribute cell_Fe description String total elemental Fe content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Fe ioos_category String Unknown
attribute cell_Fe long_name String Cell Fe
attribute cell_Fe units String mol/cell
variable cell_Co   double  
attribute cell_Co _FillValue double NaN
attribute cell_Co actual_range double 3.27E-21, 7.22E-17
attribute cell_Co description String total elemental Co content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Co ioos_category String Unknown
attribute cell_Co long_name String Cell Co
attribute cell_Co units String mol/cell
variable cell_Ni   double  
attribute cell_Ni _FillValue double NaN
attribute cell_Ni actual_range double 4.17E-21, 2.9E-15
attribute cell_Ni description String total elemental Ni content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Ni ioos_category String Unknown
attribute cell_Ni long_name String Cell Ni
attribute cell_Ni units String mol/cell
variable cell_Cu   double  
attribute cell_Cu _FillValue double NaN
attribute cell_Cu actual_range double 2.28E-19, 4.09E-15
attribute cell_Cu description String total elemental Cu content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Cu ioos_category String Unknown
attribute cell_Cu long_name String Cell Cu
attribute cell_Cu units String mol/cell
variable cell_Zn   double  
attribute cell_Zn _FillValue double NaN
attribute cell_Zn actual_range double 4.44E-21, 5.4E-15
attribute cell_Zn description String total elemental Zn content of each cell was measured with SXRF. Details provided in Twining et al. (2015).
attribute cell_Zn ioos_category String Unknown
attribute cell_Zn long_name String Cell Zn
attribute cell_Zn units String mol/cell
variable light_image_filename   String  
attribute light_image_filename description String light image filename
attribute light_image_filename fileAccessBaseUrl String http://data.bco-dmo.org/GEOTRACES/Twining/Light_image/ (external link)
attribute light_image_filename ioos_category String Unknown
attribute light_image_filename long_name String Light Image Filename
attribute light_image_filename units String unitless
variable chl_image_filename   String  
attribute chl_image_filename description String Chl image filename
attribute chl_image_filename fileAccessBaseUrl String http://data.bco-dmo.org/GEOTRACES/Twining/Chl_image/ (external link)
attribute chl_image_filename ioos_category String Unknown
attribute chl_image_filename long_name String Chl Image Filename
attribute chl_image_filename units String unitless
variable SXRF_map_filename   String  
attribute SXRF_map_filename description String SXRF map filename
attribute SXRF_map_filename fileAccessBaseUrl String http://data.bco-dmo.org/GEOTRACES/Twining/SXRF_map/ (external link)
attribute SXRF_map_filename ioos_category String Unknown
attribute SXRF_map_filename long_name String SXRF Map Filename
attribute SXRF_map_filename units String unitless
variable SXRF_spectrum_filename   String  
attribute SXRF_spectrum_filename description String SXRF spectrum filename
attribute SXRF_spectrum_filename fileAccessBaseUrl String http://data.bco-dmo.org/GEOTRACES/Twining/SXRF_spectra/ (external link)
attribute SXRF_spectrum_filename ioos_category String Unknown
attribute SXRF_spectrum_filename long_name String SXRF Spectrum Filename
attribute SXRF_spectrum_filename units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.28768088E9, NaN
attribute time axis String T
attribute time description String Date and time (UTC) variable recorded at the bottle sampling time in ISO compliant format. Values were added from the intermediate US GEOTRACES master file (see Processing Description). This standard is based on ISO 8601:2004(E) and takes on the following form: 2009-08-30T14:05:00[.xx]Z (UTC time)
attribute time ioos_category String Time
attribute time long_name String BTL ISO Date Time UTC
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

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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