http://lod.bco-dmo.org/id/dataset/3827
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
2012-12-31
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved Ga and Ba from GEOTRACES Rosette bottles R/V Knorr cruises KN199-04 and KN204-01 (GA03) in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
2016-08-30
publication
2016-08-30
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-01-08
publication
https://doi.org/10.26008/1912/bco-dmo.3827.2
Alan M. Shiller
University of Southern Mississippi
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: Shiller, A. M. (2021) Dissolved Ga and Ba from GEOTRACES Rosette bottles R/V Knorr cruises KN199-04 and KN204-01 (GA03) in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2016-08-30 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.3827.2 [access date]
Dissolved Ga and Ba from GEOTRACES Rosette bottles from GT10 and GT11 cruises. Dataset Description: <p>Lab-based measurements of dissolved Gallium (Ga)&nbsp;and Barium (Ba) from GEOTRACES Rosette bottles from the 2010 and 2011 US GEOTRACES cruises (GT10 and GT11).&nbsp;</p>
<p><strong>STATUS NOTE:</strong> These data were significantly updated on 30 August 2016. A volume correction had not been applied to the previous version, and thus all of the original values&nbsp;needed to be multiplied by 0.9805. This correction has been applied in the 30 August version, now available online. There were also some samples that were re-analyzed for Ba with the values revised accordingly. Additionally, the PIs withdrew the Pb data (in the original version) because higher quality Pb data are already available from these cruises.</p>
<p>Please note that some US GEOTRACES 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 <a href="http://www.bco-dmo.org/project/2066" target="_blank">US GEOTRACES project page</a> (scroll down and expand the "Datasets" section).</p> Methods and Sampling: <p>The samples were collected for trace metal determinations at various stations from the RV Knorr using a custom-built US GEOTRACES trace metal clean rosette consisting of an epoxy painted Al rosette frame containing 24x12 L GO-FLO bottles (Cutter and Bruland, 2012). Immediately after the rosette was recovered, the tops of the GO-FLO bottles were covered with plastic bags and the bottles were removed from the frame and carried into the US GEOTRACES clean van for sub-sampling. The GO-FLO bottles were pressurized to 10 psi using 0.2 um-filtered compressed air and samples were filtered through 0.2 um Acropak or membrane filters. All sub-sampling was undertaken in the clean van using rigorous trace metal protocols. Additional surface water samples were collected from a clean underway sampling system and similarly filtered. <strong>This dataset contains the bottle samples.</strong> To see the surface data, refer to the <a href="http://www.bco-dmo.org/dataset/3831" target="_blank">GT10-11 - GaBa_surface dataset</a>&nbsp;(see Related Datasets).</p>
<p>Ga and Ba were determined by isotope dilution ICP-MS using a ThermoFisher Element 2 operated in low resolution. For Ga, samples were concentrated using Mg(OH)₂ co-precipitation (Shiller &amp; Bairamadgi, 2006; Zurbrick et al., 2012) while Ba was determined following 20-fold dilution in dilute nitric acid (Shim et al., 2012).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0927951 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0927951
completed
Alan M. Shiller
University of Southern Mississippi
985-640-4580
USA
shilleram@gmail.com
pointOfContact
asNeeded
Dataset Version: 2
Unknown
cruise_id
cruise_name
station_GEOTRC
cast_GEOTRC
date
month
day
year
time
lat
lon
bottle_GEOTRC
sample_GEOTRC
depth_GEOTRC_CTD
Ga_D_CONC_BOTTLE
Ga_D_CONC_BOTTLE_FLAG_W
Ba_D_CONC_BOTTLE
Ba_D_CONC_BOTTLE_FLAG_W
ISO_DateTime_UTC
event_GEOTRC
sample_bottle_GEOTRC
BTL_ISO_DateTime_UTC
GO-FLO Bottle
Inductively Coupled Plasma Mass Spectrometer
theme
None, User defined
Cruise identfier
cruise name
station
cast
date_utc
month_utc
day_utc
year
time_utc
latitude
longitude
bottle number
sample identification
depth
trace metal concentration
quality flag
ISO_DateTime_UTC
event
Niskin bottle number
featureType
BCO-DMO Standard Parameters
GO-FLO Bottle
Inductively Coupled Plasma Mass Spectrometer
instrument
BCO-DMO Standard Instruments
KN199-04
KN204-01
service
Deployment Activity
Subtropical northern Atlantic Ocean
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
U.S. GEOTRACES North Atlantic Transect (GA03)
https://www.geotraces.org/
U.S. GEOTRACES North Atlantic Transect (GA03)
<p><em>Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.</em></p>
<p>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.</p>
<p>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.</p>
<p><em>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]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" style="width:350px" /></a></p>
<p>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.</p>
<p>The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf" target="_blank">KN199-04 Cruise Report (PDF)</a></p>
<p><em>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]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GNAT_stationPlan.jpg" target="_blank"><img alt="Atlantic Transect Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GNAT_stationPlan_sm.jpg" style="width:350px" /></a></p>
<p>The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Submitted_Preliminary_Cruise_Report_for_Knorr_204-01.pdf" target="_blank">KN204-01A,B Cruise Report (PDF)</a></p>
<p><em>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]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" target="_blank"><img alt="Atlantic Transect/Part 2 Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" style="width:350px" /></a></p>
<p>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: <a href="http://www.geotraces.org/science/intercalibration/322-standards-and-reference-materials?acm=455_215" target="_blank">Standards and Reference Materials</a></p>
<p><strong>ADCP data</strong> are available from the Currents ADCP group at the University of Hawaii at the links below:<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_4" target="_blank">KN199-04</a> (leg 1 of 2010 cruise; Lisbon to Cape Verde)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_5" target="_blank">KN199-05</a> (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_01" target="_blank">KN204-01A</a> (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_02" target="_blank">KN204-01B</a> (part 2 of 2011 cruise; Bermuda to Cape Verde)</p>
U.S. GEOTRACES NAT
largerWorkCitation
project
eng; USA
oceans
Subtropical northern Atlantic Ocean
-69.813
-9.6601
17.3502
39.7007
2010-10-16
2011-12-10
Subtropical western and eastern North Atlantic Ocean (GA03)
0
BCO-DMO catalogue of parameters from Dissolved Ga and Ba from GEOTRACES Rosette bottles R/V Knorr cruises KN199-04 and KN204-01 (GA03) in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT 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
http://lod.bco-dmo.org/id/dataset-parameter/31473.rdf
Name: cruise_id
Units: text
Description: <p>Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31474.rdf
Name: cruise_name
Units: text
Description: <p>GEOTRACES cruise identifier.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31475.rdf
Name: station_GEOTRC
Units: unitless
Description: <p>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. PI-supplied values were identical to those in the<br />
intermediate US GEOTRACES master file. Originally submitted as 'STNNBR', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31476.rdf
Name: cast_GEOTRC
Units: unitless
Description: <p>Cast identifier, numbered consecutively within a station. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'CASTNO', <br />this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31477.rdf
Name: date
Units: YYYYmmdd
Description: <p>Date (UTC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/31478.rdf
Name: month
Units: mm (01 to 12)
Description: <p>2-digit month of year (UTC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/31479.rdf
Name: day
Units: dd (01 to 31)
Description: <p>2-digit day of month (UTC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/31480.rdf
Name: year
Units: YYYY
Description: <p>4-digit year (UTC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/31481.rdf
Name: time
Units: HHMM
Description: <p>Time in HHMM format; 24-hour clock (UTC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/31482.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude. North = Positive.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31483.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude. West = Negative.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31484.rdf
Name: bottle_GEOTRC
Units: unitless
Description: <p>Alphanumeric characters identifying bottle type (e.g., NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette. PI-supplied values were identical to those in the <br />intermediate US GEOTRACES master file. Originally submitted as 'BTLNBR', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31485.rdf
Name: sample_GEOTRC
Units: unitless
Description: <p>Unique identification numbers given to samples taken from bottles; rangies from 1 to 24; often used synonymously with bottle number. PI-supplied values were identical to those in the <br />intermediate US GEOTRACES master file. Originally submitted as 'GEOTRC_SAMPNO', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31486.rdf
Name: depth_GEOTRC_CTD
Units: meters
Description: <p>Observation/sample depth in meters, calculated from CTD pressure. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'CTDDEPTH',<br /> this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31487.rdf
Name: Ga_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved gallium (Ga) in pmol/kg seawater; determined at the University of Southern Mississippi.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31488.rdf
Name: Ga_D_CONC_BOTTLE_FLAG_W
Units: unitless
Description: <p>Quality flag for 'Ga'; based on WOCE bottle flags:<br />
2= good; 3 = questionable; 4 = bad; 5 = not reported; 9 = sample not drawn from this bottle.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31491.rdf
Name: Ba_D_CONC_BOTTLE
Units: nmol/kg
Description: <p>Dissolved barium (Ba) in nmol/kg seawater; determined at the University of Southern Mississippi.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31492.rdf
Name: Ba_D_CONC_BOTTLE_FLAG_W
Units: unitless
Description: <p>Quality flag for 'Ba'; based on WOCE bottle flags:<br />
2= good; 3 = questionable; 4 = bad; 5 = not reported; 9 = sample not drawn from this bottle.</p>
http://lod.bco-dmo.org/id/dataset-parameter/33133.rdf
Name: ISO_DateTime_UTC
Units: YYYY-mm-ddTHH:MM:SS.ssZ
Description: <p>Cast date/time (UTC) formatted to ISO8601 standard. T indicates start of time string; Z indicates UTC. Calculated from original date and time fields.</p>
http://lod.bco-dmo.org/id/dataset-parameter/33134.rdf
Name: event_GEOTRC
Units: unitless
Description: <p>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.<br />
Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33135.rdf
Name: sample_bottle_GEOTRC
Units: unitless
Description: <p>Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number.<br /> Values were added from the intermediate US GEOTRACES master file (see Processing Description). </p>
http://lod.bco-dmo.org/id/dataset-parameter/33136.rdf
Name: BTL_ISO_DateTime_UTC
Units: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
Description: <p>added from the intermediate US GEOTRACES master file (see Processing Description).<br /><br />
This standard is based on ISO 8601:2004(E) and takes on the following form:<br />
2009-08-30T14:05:00[.xx]Z (UTC time)</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
181177
https://darchive.mblwhoilibrary.org/bitstream/1912/26546/1/dataset-3827_gt10-11-gababottles__v2.tsv
download
https://doi.org/10.26008/1912/bco-dmo.3827.2
download
onLine
dataset
<p>The samples were collected for trace metal determinations at various stations from the RV Knorr using a custom-built US GEOTRACES trace metal clean rosette consisting of an epoxy painted Al rosette frame containing 24x12 L GO-FLO bottles (Cutter and Bruland, 2012). Immediately after the rosette was recovered, the tops of the GO-FLO bottles were covered with plastic bags and the bottles were removed from the frame and carried into the US GEOTRACES clean van for sub-sampling. The GO-FLO bottles were pressurized to 10 psi using 0.2 um-filtered compressed air and samples were filtered through 0.2 um Acropak or membrane filters. All sub-sampling was undertaken in the clean van using rigorous trace metal protocols. Additional surface water samples were collected from a clean underway sampling system and similarly filtered. <strong>This dataset contains the bottle samples.</strong> To see the surface data, refer to the <a href="http://www.bco-dmo.org/dataset/3831" target="_blank">GT10-11 - GaBa_surface dataset</a>&nbsp;(see Related Datasets).</p>
<p>Ga and Ba were determined by isotope dilution ICP-MS using a ThermoFisher Element 2 operated in low resolution. For Ga, samples were concentrated using Mg(OH)₂ co-precipitation (Shiller &amp; Bairamadgi, 2006; Zurbrick et al., 2012) while Ba was determined following 20-fold dilution in dilute nitric acid (Shim et al., 2012).</p>
Specified by the Principal Investigator(s)
<p>Quality flag:&nbsp; Assignment of quality flag is based on analytical and methodological considerations in conjunction with examination of profiles and replicate analyses.&nbsp; Scheme is based on WOCE bottle flags: good (2), questionable (3), bad (4), not reported (5), and sample not drawn from this bottle (9).<br />
<br />
Reporting units are pico- or nano-moles per kg-seawater. Missing data were identified by 'nd'.<br />
<br />
Precision: Ga = 6.5% at 30 pmol/kg; Ba = 3% at 37 nmol/kg<br />
Limit of detection: Ga = 2 pmol/kg; Ba = 0.7 nmol/kg</p>
<p>BCO-DMO made the following modifications:<br />
- values of '-999' were replaced with 'nd'.<br />
- blanks (missing data) were replaced with 'nd'.<br />
- parameter names were modified to conform with BCO-DMO and GEOTRACES naming conventions.<br />
- added ISO_DateTime_UTC from the original date and time field provided by PI.</p>
<p><strong>STATUS NOTE:</strong> These data were significantly updated on 30 August 2016. A volume correction had not been applied to the previous version, and thus all of the original values&nbsp;needed to be multiplied by 0.9805. This correction has been applied in the 30 August version, now available online. There were also some samples that were&nbsp;re-analyzed for Ba with the values revised accordingly. Additionally, the PIs&nbsp;withdrew the Pb data (in the original version) because higher quality&nbsp;Pb data are already available&nbsp;from these&nbsp;cruises.</p>
<p><strong>Additional GEOTRACES Processing:</strong><br />
After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.<br />
<br />
Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.<br />
<br />
A standardized BCO-DMO method (called "join") was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.<br />
<br />
If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the names of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.<br />
<br />
See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
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GO-FLO Bottle
GO-FLO Bottle
PI Supplied Instrument Name: GO-FLO Bottle PI Supplied Instrument Description:The samples were collected for trace metal determinations at various stations from the RV Knorr using a custom-built US GEOTRACES trace metal clean rosette consisting of an epoxy painted Al rosette frame containing 24x12 L GO-FLO bottles. Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Inductively Coupled Plasma Mass Spectrometer
Inductively Coupled Plasma Mass Spectrometer
PI Supplied Instrument Name: Inductively Coupled Plasma Mass Spectrometer PI Supplied Instrument Description:Ga and Ba were determined by isotope dilution ICP-MS using a ThermoFisher Element 2 operated in low resolution. 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/
Cruise: KN199-04
KN199-04
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN199-04
William J. Jenkins
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf
Report describing KN199-04
Cruise: KN204-01
KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN204-01
Edward A. Boyle
Massachusetts Institute of Technology
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/STS_Prelim_GT11_Doc.pdf
Report describing KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel