http://lod.bco-dmo.org/id/dataset/643166
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
2016-04-14
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater from the GEOTRACES-Arctic program, aboard RV/HLY-1502, 2015.
2016-10-24
publication
2016-10-24
revision
BCO-DMO Linked Data URI
2016-10-24
creation
http://lod.bco-dmo.org/id/dataset/643166
David T. Ho
University of Hawai'i
principalInvestigator
William M. Smethie Jr.
Lamont-Doherty Earth Observatory
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: Smethie Jr., W. M., Ho, D. T. (2016) Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater from the GEOTRACES-Arctic program, aboard RV/HLY-1502, 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1b) Version Date 2016-10-24 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/643166 [access date]
Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater Dataset Description: <p>Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater from the Artic section of the US-GEOTRACES project.</p>
<p>CFC-11 CCl<sub>3</sub>F trichlorofluoromethane pmol/kg (10^-12 moles/kg)<br />
CFC-12 CCl<sub>2</sub>F<sub>2</sub> dichlorodifluoromethane pmol/kg<br />
CFC-113 C<sub>2</sub>Cl<sub>3</sub>F<sub>3</sub> 1,1,2-trichlorotrifluloroethane pmol/kg<br />
SF<sub>6</sub> sulfur hexafluoride fmol/kg (10^-15 moles/kg)</p> Methods and Sampling: <p>Water samples for CFC and SF<sub>6</sub> measurements were collected using either a 12-place 30-liter bottle rosette or a 36-place 10-liter bottle rosette.&nbsp; The CFC/SF<sub>6</sub> sample was the first sample drawn from the rosette bottle.&nbsp; The samples were collected in a 500 cc glass stoppered bottle through a PVC tube connected to the rosette bottle drain valve.&nbsp; Bubbles were cleared from the tube with water flowing and the tube was inserted to the bottom of the 500 cc glass bottle.&nbsp; The glass bottle was placed in a wide mouth plastic jar that extended above the opening of the glass bottle by 4 cm.&nbsp; The overflow water collected in the jar, filling and overflowing the jar and covering the glass bottle opening.&nbsp; The flow continued for 3 overflow volumes of the glass bottle (1.5 liters) and the glass stopper was then inserted underwater preventing air from being trapped in the sample.&nbsp; The jar was then capped and the sample stored at room temperature until measurement, which was within 8 hours of collection.&nbsp; The measurements were carried out using a dual purge and trap system interfaced to a dual ECD (electron capture detector) HP6890 gas chromatograph.&nbsp; When a water sample is introduced into the system, it is split into two aliquots, a 20 cc aliquot for CFC measurement and a 350 cc aliquot for SF<sub>6</sub> measurement.&nbsp; The aliquots are transferred to appropriately sized sparging chambers and stripped with ultra high purity nitrogen, which transports the extracted gases to cold traps (Unibeads-2s for CFCs, Carboxan-1000 for SF<sub>6</sub>) cooled to -80°C.&nbsp; The traps are then heated to 110°C for CFCs and 165°C for SF<sub>6</sub> and flushed into the gas chromatograph where CFCs are separated with a Porasil-B pre-column and a Carbograph 1AC main column and SF<sub>6</sub> is separated with a pre-column and main column of Molecular Sieve 5A.&nbsp; The gases are detected by the ECDs.&nbsp; The ECDs are calibrated by running gas standards with known concentrations of CFCs and SF6.&nbsp; Duplicate samples are collected and measured to provide a combined precision for sampling and measurement.&nbsp; The average differences from these duplicate measurements was the larger of 0.005 pmol/kg or 0.5% for CFC-11, 0.008 pmol/kg or 1.1% for CFC-12, 0.005 pmol/kg for CFC-113 and 0.02 fmol/kg or 1.5% for SF<sub>6</sub>.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1436666 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1436666
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1436125 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1436125
completed
David T. Ho
University of Hawai'i
808-956-3311
Department of Oceanography 1000 Pope Rd
Honolulu
HI
96822
USA
ho@hawaii.edu
pointOfContact
William M. Smethie Jr.
Lamont-Doherty Earth Observatory
845-365-8566
Lamont-Doherty Earth Observatory PO Box 1000
Palisades
NY
10964-8000
USA
bsmeth@ldeo.columbia.edu
pointOfContact
asNeeded
Dataset Version: 1b
Unknown
cruise_id
station
cast
GEOTRC_EVENTNO
sample
BTLNBR
mon
day
year
lat
lon
depth_w
PRES_R
TEMP
CTDSAL
SALT
CTDO2
OXYCTD_umol_kg
O2_ml_l
BTLOXY_umol_kg
SIO3_CONC
NO3_CONC
NO2_CONC
PO4_CONC
F11_CONC
FLAG_F11
F12_CONC
FLAG_F12
F113_CONC
FLAG_F113
SF6_CONC
FLAG_SF6
theme
None, User defined
Cruise identfier
station
cast
event
sample identification
bottle
month of year
day of month
year
latitude
longitude
depth_w
water pressure
water temperature at measurement depth
salinity from CTD
bottle salinity
dissolved Oxygen
dissolved Oxygen
Silicate, Si(OH)4, silicic acid
Nitrate
Nitrite
reactive phosphorus (PO4)
No BCO-DMO term
quality flag
SF6
featureType
BCO-DMO Standard Parameters
Automated Purge and Trap System
Gas Chromatograph
Niskin bottle
instrument
BCO-DMO Standard Instruments
HLY1502
service
Deployment Activity
Western Arctic Ocean
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
U.S. Arctic GEOTRACES Study (GN01)
https://www.geotraces.org/
U.S. Arctic GEOTRACES Study (GN01)
<p><em>Description from NSF award abstract:</em><br />
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.</p>
<p>As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.</p>
U.S. GEOTRACES Arctic
largerWorkCitation
project
US GEOTRACES Arctic Section - Water mass composition, circulation and mean residence times derived from measurements of natural and manmade tracers
https://osprey.bco-dmo.org/project/643170
US GEOTRACES Arctic Section - Water mass composition, circulation and mean residence times derived from measurements of natural and manmade tracers
<p>In this project, investigators participating in the 2015 U.S. GEOTRACES Arctic expedition will measure six oceanic tracers in order to better understand oceanic water movement in the Arctic Ocean. With this information in-hand, it will be much easier for other investigators to interpret their own seawater chemistry data. In common with other national initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Some trace elements are essential to life, others are known biological toxins, and still others are important because they can be used as tracers of a variety of physical, chemical, and biological processes in the sea. The tracers to be measured as part of this study have proven their value for studies of water mass composition, circulation, and mean residence times on short to long time scales. This project will also provide training for two high school teachers, and develop curriculum for high school students.</p>
<p>The Arctic is presently undergoing system-scale environmental change at a pace not seen elsewhere on the globe. Thus, it is essential to establish a baseline of the distributions of trace elements and isotopes (TEIs) for future reference and to begin understanding the processes that determine the TEI distributions in the Arctic Ocean. Particularly with respect to the receding sea ice cover, it is imperative to understand how TEIs impact vital functions of the Arctic system, such as primary productivity or, more generally, the cycling of carbon under these rapidly changing environmental conditions. To further understanding on water movement and thus trace element distributions in the Arctic, this team of researchers will measure chlorofluorocarbons (CFCs), sulfur hexafluoride (SF6), tritium, helium isotopes, stable isotopes of water and C-14 along the transect. These tracers have been used successfully in past studies for determination of water mass composition, circulation pathways, and mean residence times on time scales from less than one year (CFCs/SF6 and tritium/He-3) to several hundred years (C-14). The researchers plan to make underway measurements of the saturations of CFCs and SF6 in partially and totally ice covered waters along the cruise track, and will also calculate forward and backward sea ice trajectories at all station locations to determine sources of sea ice samples. These trajectories will be used as a first step towards understanding the pathways of waters in the surface mixed layer.</p>
GT-Arctic Tracer Circulation
largerWorkCitation
project
eng; USA
oceans
Western Arctic Ocean
167
-148
60.252
89.9876
2015-08-12
2015-10-06
From projects that focused on the following 2 locations: 1. Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01) 2. Arctic Ocean
0
BCO-DMO catalogue of parameters from Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater from the GEOTRACES-Arctic program, aboard RV/HLY-1502, 2015.
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/643462.rdf
Name: cruise_id
Units: unitless
Description: <p>Cruise identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/643463.rdf
Name: station
Units: unitless
Description: <p>Station Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/643464.rdf
Name: cast
Units: unitless
Description: <p>Cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/643465.rdf
Name: GEOTRC_EVENTNO
Units: unitless
Description: <p>GEOTRACES Event Number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/643466.rdf
Name: sample
Units: unitless
Description: <p>GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/643467.rdf
Name: BTLNBR
Units: unitless
Description: <p>Bottle number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/643468.rdf
Name: mon
Units: 1-12
Description: <p>Month</p>
http://lod.bco-dmo.org/id/dataset-parameter/643469.rdf
Name: day
Units: 1-31
Description: <p>UTC day</p>
http://lod.bco-dmo.org/id/dataset-parameter/643470.rdf
Name: year
Units: yyyy
Description: <p>Year</p>
http://lod.bco-dmo.org/id/dataset-parameter/643471.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude of bottle firing; north is positive. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/643472.rdf
Name: lon
Units: decimal degrees
Description: <p>Lonitude of bottle firing; east is positive. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/643473.rdf
Name: depth_w
Units: meters
Description: <p>Water depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/643474.rdf
Name: PRES_R
Units: decibars
Description: <p>Pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/643475.rdf
Name: TEMP
Units: degrees Celsius
Description: <p>Temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/643476.rdf
Name: CTDSAL
Units: PSU
Description: <p>Salinity from the CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/643477.rdf
Name: SALT
Units: PSU
Description: <p>Salinity from bottle</p>
http://lod.bco-dmo.org/id/dataset-parameter/643478.rdf
Name: CTDO2
Units: ml/l
Description: <p>Oxygen concentration from CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/643479.rdf
Name: OXYCTD_umol_kg
Units: umol/kg
Description: <p>Oxygen concentration from CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/643480.rdf
Name: O2_ml_l
Units: ml/l
Description: <p>Oxygen concentration from bottle</p>
http://lod.bco-dmo.org/id/dataset-parameter/643481.rdf
Name: BTLOXY_umol_kg
Units: umol/kg
Description: <p>Oxygen concentration from bottle</p>
http://lod.bco-dmo.org/id/dataset-parameter/643482.rdf
Name: SIO3_CONC
Units: umol/kg
Description: <p>SiO3 silicate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/643483.rdf
Name: NO3_CONC
Units: umol/kg
Description: <p>NO3 nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/643484.rdf
Name: NO2_CONC
Units: umol/kg
Description: <p>NO2 nitrite concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/643485.rdf
Name: PO4_CONC
Units: umol/kg
Description: <p>PO4 phosphate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/643486.rdf
Name: F11_CONC
Units: pmol/kg (10-12 moles/kg)
Description: <p>CCl3F trichlorofluoromethane</p>
http://lod.bco-dmo.org/id/dataset-parameter/643487.rdf
Name: FLAG_F11
Units: unitless
Description: <p>WOCE quality flag: 2 = good; 3 = questionable; 4 = bad; 9 = missing dat</p>
http://lod.bco-dmo.org/id/dataset-parameter/643488.rdf
Name: F12_CONC
Units: pmol/kg
Description: <p>CCl<sub>2</sub>F<sub>2</sub> dichlorodifluoromethane</p>
http://lod.bco-dmo.org/id/dataset-parameter/643489.rdf
Name: FLAG_F12
Units: unitless
Description: <p>WOCE quality flag: 2 = good; 3 = questionable; 4 = bad; 9 = missing dat</p>
http://lod.bco-dmo.org/id/dataset-parameter/643490.rdf
Name: F113_CONC
Units: pmol/kg
Description: <p>C<sub>2</sub>Cl<sub>3</sub>F<sub>3</sub> 1,1,2-trichlorotrifluloroethane</p>
http://lod.bco-dmo.org/id/dataset-parameter/643491.rdf
Name: FLAG_F113
Units: unitless
Description: <p>WOCE quality flag: 2 = good; 3 = questionable; 4 = bad; 9 = missing dat</p>
http://lod.bco-dmo.org/id/dataset-parameter/643492.rdf
Name: SF6_CONC
Units: fmol/kg (10-15 moles/kg)
Description: <p>SF6 sulfur hexafluoride</p>
http://lod.bco-dmo.org/id/dataset-parameter/643493.rdf
Name: FLAG_SF6
Units: unitless
Description: <p>WOCE quality flag: 2 = good; 3 = questionable; 4 = bad; 9 = missing dat</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
177388
https://datadocs.bco-dmo.org/file/OJJGv1AuZNXr4q/CFC_SF6.csv
CFC_SF6.csv
Primary data file for dataset ID 643166
download
https://osprey.bco-dmo.org/dataset/643166/data/download
download
onLine
dataset
<p>Water samples for CFC and SF<sub>6</sub> measurements were collected using either a 12-place 30-liter bottle rosette or a 36-place 10-liter bottle rosette.&nbsp; The CFC/SF<sub>6</sub> sample was the first sample drawn from the rosette bottle.&nbsp; The samples were collected in a 500 cc glass stoppered bottle through a PVC tube connected to the rosette bottle drain valve.&nbsp; Bubbles were cleared from the tube with water flowing and the tube was inserted to the bottom of the 500 cc glass bottle.&nbsp; The glass bottle was placed in a wide mouth plastic jar that extended above the opening of the glass bottle by 4 cm.&nbsp; The overflow water collected in the jar, filling and overflowing the jar and covering the glass bottle opening.&nbsp; The flow continued for 3 overflow volumes of the glass bottle (1.5 liters) and the glass stopper was then inserted underwater preventing air from being trapped in the sample.&nbsp; The jar was then capped and the sample stored at room temperature until measurement, which was within 8 hours of collection.&nbsp; The measurements were carried out using a dual purge and trap system interfaced to a dual ECD (electron capture detector) HP6890 gas chromatograph.&nbsp; When a water sample is introduced into the system, it is split into two aliquots, a 20 cc aliquot for CFC measurement and a 350 cc aliquot for SF<sub>6</sub> measurement.&nbsp; The aliquots are transferred to appropriately sized sparging chambers and stripped with ultra high purity nitrogen, which transports the extracted gases to cold traps (Unibeads-2s for CFCs, Carboxan-1000 for SF<sub>6</sub>) cooled to -80°C.&nbsp; The traps are then heated to 110°C for CFCs and 165°C for SF<sub>6</sub> and flushed into the gas chromatograph where CFCs are separated with a Porasil-B pre-column and a Carbograph 1AC main column and SF<sub>6</sub> is separated with a pre-column and main column of Molecular Sieve 5A.&nbsp; The gases are detected by the ECDs.&nbsp; The ECDs are calibrated by running gas standards with known concentrations of CFCs and SF6.&nbsp; Duplicate samples are collected and measured to provide a combined precision for sampling and measurement.&nbsp; The average differences from these duplicate measurements was the larger of 0.005 pmol/kg or 0.5% for CFC-11, 0.008 pmol/kg or 1.1% for CFC-12, 0.005 pmol/kg for CFC-113 and 0.02 fmol/kg or 1.5% for SF<sub>6</sub>.</p>
Specified by the Principal Investigator(s)
<p>The gas chromatograph produces a peak for each compound being measured.&nbsp; Each chromatogram is digitally acquired on a PC and the peak areas integrated with software developed specifically for this purpose. Calibration curves relating peak area to concentration are generated using the gas standard data and this information is used to convert peak areas for the samples to concentrations. Blanks and reference standards are run about every 2 hours to provide data to correct for detector drift and blanks. After completion of the cruise, plots of the CFCs and SF<sub>6</sub> against each other and against hydrographic variables are prepared to determine trends in the data and identify questionable data. Questionable data are checked for possible data processing errors, sampling problems, equipment problems, etc. Mistakes are corrected and samples judged to be bad measurements are flagged as such. The WOCE flagging convention is used.&nbsp; The gas standard used was prepared by Dr. John Bullister of NOAA/PMEL specifically for the CLIVAR Repeat Hydrography program; CFC concentrations are reported on the SIO98 calibration scale and SF<sub>6</sub> concentrations on the SIO2005 calibration scale.</p>
<p><strong>BCO-DMO Processing Notes:</strong><br />
2016-04-22: initially served data<br />
2016-10-24: changed parameter names from F11, F12, F113 to CFC-11, CFC-12, CFC113<br />
2017-05-24: dataset made publicly available</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
PI Supplied Instrument Name: Instrument Name: Automated Purge and Trap System Instrument Short Name: Instrument Description: This equipment removes dissolved gases from the water samples, traps the extracted compounds on a cold trap and then heats the trap and injects the trapped gases into the gas chromatograph. It is automated and controlled by a laptop computer.
PI Supplied Instrument Name: PI Supplied Instrument Description:Dual ECD (electron capture detector) HP6890 gas chromatograph Instrument Name: Gas Chromatograph Instrument Short Name:Gas Chromatograph Instrument Description: Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC) Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/
PI Supplied Instrument Name: PI Supplied Instrument Description:Two rosettes were used, one with 30-l bottles and one with 10-l bottles. Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
Cruise: HLY1502
HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel
HLY1502
David C. Kadko
Florida International University
https://datadocs.bco-dmo.org/docs/302/geotraces/GEOTRACES_ARCTIC/data_docs/cruise_reports/healy1502.pdf
Report describing HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel