Concentrations and stable isotope ratios of Fe, Zn, and Cd from the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015

Website: https://www.bco-dmo.org/dataset/812233
Data Type: Cruise Results
Version: 1
Version Date: 2020-05-20

Project
» U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)
» Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean (GEOTRACES Arctic Bioactive Trace Metals)

Program
» U.S. GEOTRACES (U.S. GEOTRACES)
ContributorsAffiliationRole
John, Seth G.University of Southern California (USC)Principal Investigator
Rauch, ShannonWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
Concentrations and stable isotope ratios of Fe, Zn, and Cd from the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015. A subset of these data has been published in Zhang et al., 2019.


Coverage

Spatial Extent: N:89.995 E:179.593 S:60.173 W:-179.808
Temporal Extent: 2015-08-12 - 2015-10-07

Dataset Description

Concentrations and stable isotope ratios of Fe, Zn, and Cd from the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015. A subset of these data has been published in Zhang et al., 2019.


Methods & Sampling

Seawater dissolved samples were taken from the US GEOTRACES trace-metal clean rosette, or underway towfish system. 

Methods for Fe, Zn, and Cd stable isotope and concentration analyses have been described in detail in previous manuscripts (Conway et al., 2016, 2013; Conway & John, 2014a, 2014b; T.M. Conway & John, 2015; Tim M Conway & John, 2015; John et al., 2018a, 2018b)). Briefly:

Concentration measurements were made using an offline adaptation of the seaFAST-pico metal extraction system (Elemental Scientific Inc.) as described in Lagerstrom et al. (2013). Briefly, using the seaFAST, 10 mL aliquots of seawater were extracted onto Nobias PA1 chelating resin at pH ~ 6.5 with an ammonium acetate/acetic acid buffer, then eluted in 10% v/v nitric acid (HNO3). Metal concentrations were measured on a Thermo Fisher Element 2 HR-ICP-MS.

Fe, Zn, Cd, Ni, Cu, and Pb concentrations were measured by isotope dilution. Recoveries for Ni were used to adjust the final concentrations of Mn and REEs.

The accuracy of our analytical procedure was verified by analysis of a seawater reference material (GEOTRACES 2008 GS), for which good agreement with the reported consensus values were obtained.


Data Processing Description

Quality Control and Intercalibration: refer to the Intercalibration Report Supplemental Document (PDF).

Data quality flags:
SeaDataNet data quality flags have been assigned to these data. More information is available from GEOTRACES at http://www.geotraces.org/library-88/geotraces-policies/1577-geotraces-quality-flag-policy and from SeaDataNet at https://www.seadatanet.org/Standards/Data-Quality-Control. In summary:
0 = no quality control
1 = good value
2 = probably good value
3 = probably bad value
4 = bad value
5 = changed value
6 = value below detection (BDL)
7 = value in excess
8 = interpolated value
9 = missing value

BCO-DMO Processing:
- changed #N/A and #VALUE! to nd ("no data");
- added start and end ISO 8601 date/time fields;
- changed date/time of 9/13/2015 24:00 to 9/14/2015 00:00.


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Data Files

File
Fe_Zn_Cd.csv
(Comma Separated Values (.csv), 357.29 KB)
MD5:ecfd1395f3af87c99c93ecd8356e4b6c
Primary data file for dataset ID 812233

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Supplemental Files

File
GEOTRACES Intercalibration Report - Seth John - HLY1502 Fe, Zn, Cd
filename: 0000-0002-8257-626X-HLY1502-multiple-param-intercal-report.pdf
(Portable Document Format (.pdf), 911.85 KB)
MD5:a82b228262705fb9d2afd85a9971be45
GEOTRACES Intercalibration report for HLY1502 (GN01) Fe, Zn, and Cd data provided by Seth John.

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Related Publications

Conway, T. M., & John, S. G. (2014). Quantification of dissolved iron sources to the North Atlantic Ocean. Nature, 511(7508), 212–215. doi:10.1038/nature13482
Methods
Conway, T. M., & John, S. G. (2014). The biogeochemical cycling of zinc and zinc isotopes in the North Atlantic Ocean. Global Biogeochemical Cycles, 28(10), 1111–1128. doi:10.1002/2014gb004862 https://doi.org/10.1002/2014GB004862
Methods
Conway, T. M., & John, S. G. (2015). Biogeochemical cycling of cadmium isotopes along a high-resolution section through the North Atlantic Ocean. Geochimica et Cosmochimica Acta, 148, 269–283. doi:10.1016/j.gca.2014.09.032
Methods
Conway, T. M., & John, S. G. (2015). The cycling of iron, zinc and cadmium in the North East Pacific Ocean – Insights from stable isotopes. Geochimica et Cosmochimica Acta, 164, 262–283. doi:10.1016/j.gca.2015.05.023
Methods
Conway, T. M., John, S. G., & Lacan, F. (2016). Intercomparison of dissolved iron isotope profiles from reoccupation of three GEOTRACES stations in the Atlantic Ocean. Marine Chemistry, 183, 50–61. doi:10.1016/j.marchem.2016.04.007
Methods
Conway, T. M., Rosenberg, A. D., Adkins, J. F., & John, S. G. (2013). A new method for precise determination of iron, zinc and cadmium stable isotope ratios in seawater by double-spike mass spectrometry. Analytica Chimica Acta, 793, 44–52. doi:10.1016/j.aca.2013.07.025
Methods
John, S. G., Helgoe, J., & Townsend, E. (2018). Biogeochemical cycling of Zn and Cd and their stable isotopes in the Eastern Tropical South Pacific. Marine Chemistry, 201, 256–262. doi:10.1016/j.marchem.2017.06.001
Methods
John, S. G., Helgoe, J., Townsend, E., Weber, T., DeVries, T., Tagliabue, A., … Till, C. (2018). Biogeochemical cycling of Fe and Fe stable isotopes in the Eastern Tropical South Pacific. Marine Chemistry, 201, 66–76. doi:10.1016/j.marchem.2017.06.003
Methods
Lagerström, M. E., Field, M. P., Séguret, M., Fischer, L., Hann, S., & Sherrell, R. M. (2013). Automated on-line flow-injection ICP-MS determination of trace metals (Mn, Fe, Co, Ni, Cu and Zn) in open ocean seawater: Application to the GEOTRACES program. Marine Chemistry, 155, 71–80. doi:10.1016/j.marchem.2013.06.001
Methods
Zhang, R., Jensen, L. T., Fitzsimmons, J. N., Sherrell, R. M., & John, S. (2019). Dissolved cadmium and cadmium stable isotopes in the western Arctic Ocean. Geochimica et Cosmochimica Acta, 258, 258–273. doi:10.1016/j.gca.2019.05.028
Results

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Parameters

ParameterDescriptionUnits
Station_ID

Station ID number

unitless
Start_Date_UTC

Start date (UTC); format: mm/dd/yyyy

unitless
Start_Time_UTC

Start time (UTC); format: HH:MM

unitless
Start_ISO_DateTime_UTC

Start date and time (UTC) formatted to ISO8601 standard: yyyy-mm-ddTHH:MMZ

unitless
End_Date_UTC

End date (UTC); format: mm/dd/yyyy

unitless
End_Time_UTC

End time (UTC); format: HH:MM

unitless
End_ISO_DateTime_UTC

End date and time (UTC) formatted to ISO8601 standard: yyyy-mm-ddTHH:MMZ

unitless
Start_Latitude

Start latitude

degrees North
Start_Longitude

Start longitude

degrees East
End_Latitude

End latitude

degrees North
End_Longitude

End longitude

degrees East
Event_ID

Event number

unitless
Sample_ID

GEOTRACES sample number

unitless
Sample_Depth

Sample depth

meters (m)
Cd_D_CONC_BOTTLE_zd8dwc

Concentration of dissolved Cd

nmol/kg
SD1_Cd_D_CONC_BOTTLE_zd8dwc

One standard deviation of Cd_D_CONC_BOTTLE_zd8dwc

nmol/kg
Flag_Cd_D_CONC_BOTTLE_zd8dwc

Quality flag for Cd_D_CONC_BOTTLE_zd8dwc

unitless
Cd_114_110_D_DELTA_BOTTLE_hzoojp

Atom ratio of dissolved Cd isotopes expressed in conventional DELTA notation referenced to {NIST3108}

per mil
SD1_Cd_114_110_D_DELTA_BOTTLE_hzoojp

One standard deviation of Cd_114_110_D_DELTA_BOTTLE_hzoojp

per mil
Flag_Cd_114_110_D_DELTA_BOTTLE_hzoojp

Quality flag for Cd_114_110_D_DELTA_BOTTLE_hzoojp

unitless
Fe_56_54_D_DELTA_BOTTLE_uudhui

Atom ratio of dissolved Fe isotopes expressed in conventional DELTA notation referenced to {IRMM-14}

per mil
SD1_Fe_56_54_D_DELTA_BOTTLE_uudhui

One standard deviation of Fe_56_54_D_DELTA_BOTTLE_uudhui

per mil
Flag_Fe_56_54_D_DELTA_BOTTLE_uudhui

Quality flag for Fe_56_54_D_DELTA_BOTTLE_uudhui

unitless
Zn_66_64_D_DELTA_BOTTLE_i6ay6z

Atom ratio of dissolved Zn isotopes expressed in conventional DELTA notation referenced to {Lyon-JMC}

per mil
SD1_Zn_66_64_D_DELTA_BOTTLE_i6ay6z

One standard deviation of Zn_66_64_D_DELTA_BOTTLE_i6ay6z

per mil
Flag_Zn_66_64_D_DELTA_BOTTLE_i6ay6z

Quality flag for Zn_66_64_D_DELTA_BOTTLE_i6ay6z

unitless
Co_DL_CONC_BOTTLE_3gtmxg

Concentration of dissolved labile Co

pmol/kg
SD1_Co_DL_CONC_BOTTLE_3gtmxg

One standard deviation of Co_DL_CONC_BOTTLE_3gtmxg

pmol/kg
Flag_Co_DL_CONC_BOTTLE_3gtmxg

Quality flag for Co_DL_CONC_BOTTLE_3gtmxg

unitless
Cu_D_CONC_BOTTLE_z43fha

Concentration of dissolved Cu

nmol/kg
SD1_Cu_D_CONC_BOTTLE_z43fha

One standard deviation of Cu_D_CONC_BOTTLE_z43fha

nmol/kg
Flag_Cu_D_CONC_BOTTLE_z43fha

Quality flag for Cu_D_CONC_BOTTLE_z43fha

unitless
Fe_D_CONC_BOTTLE_kifzto

Concentration of dissolved Fe

nmol/kg
SD1_Fe_D_CONC_BOTTLE_kifzto

One standard deviation of Fe_D_CONC_BOTTLE_kifzto

nmol/kg
Flag_Fe_D_CONC_BOTTLE_kifzto

Quality flag for Fe_D_CONC_BOTTLE_kifzto

unitless
Mn_D_CONC_BOTTLE_1mzq8u

Concentration of dissolved Mn

nmol/kg
SD1_Mn_D_CONC_BOTTLE_1mzq8u

One standard deviation of Mn_D_CONC_BOTTLE_1mzq8u

nmol/kg
Flag_Mn_D_CONC_BOTTLE_1mzq8u

Quality flag for Mn_D_CONC_BOTTLE_1mzq8u

unitless
Ni_D_CONC_BOTTLE_pcaozt

Concentration of dissolved Ni

nmol/kg
SD1_Ni_D_CONC_BOTTLE_pcaozt

One standard deviation of Ni_D_CONC_BOTTLE_pcaozt

nmol/kg
Flag_Ni_D_CONC_BOTTLE_pcaozt

Quality flag for Ni_D_CONC_BOTTLE_pcaozt

unitless
Zn_D_CONC_BOTTLE_pcrqaj

Concentration of dissolved Zn

nmol/kg
SD1_Zn_D_CONC_BOTTLE_pcrqaj

One standard deviation of Zn_D_CONC_BOTTLE_pcrqaj

nmol/kg
Flag_Zn_D_CONC_BOTTLE_pcrqaj

Quality flag for Zn_D_CONC_BOTTLE_pcrqaj

unitless
Cd_D_CONC_FISH_dqbtwr

Concentration of dissolved Cd

nmol/kg
SD1_Cd_D_CONC_FISH_dqbtwr

One standard deviation of Cd_D_CONC_FISH_dqbtwr

nmol/kg
Flag_Cd_D_CONC_FISH_dqbtwr

Quality flag for Cd_D_CONC_FISH_dqbtwr

unitless
Y_D_CONC_BOTTLE_trggtc

Concentration of dissolved Yttrium

pmol/kg
SD1_Y_D_CONC_BOTTLE_trggtc

One standard deviation of Y_D_CONC_BOTTLE_trggtc

pmol/kg
Flag_Y_D_CONC_BOTTLE_trggtc

Quality flag for Y_D_CONC_BOTTLE_trggtc

unitless
La_D_CONC_BOTTLE_xswaw3

Concentration of dissolved La

pmol/kg
SD1_La_D_CONC_BOTTLE_xswaw3

One standard deviation of La_D_CONC_BOTTLE_xswaw3

pmol/kg
Flag_La_D_CONC_BOTTLE_xswaw3

Quality flag for La_D_CONC_BOTTLE_xswaw3

unitless
Ce_D_CONC_BOTTLE_awxzur

Concentration of dissolved Ce

pmol/kg
SD1_Ce_D_CONC_BOTTLE_awxzur

One standard deviation of Ce_D_CONC_BOTTLE_awxzur

pmol/kg
Flag_Ce_D_CONC_BOTTLE_awxzur

Quality flag for Ce_D_CONC_BOTTLE_awxzur

unitless
Pr_D_CONC_BOTTLE_mlh3fr

Concentration of dissolved Pr

pmol/kg
SD1_Pr_D_CONC_BOTTLE_mlh3fr

One standard deviation of Pr_D_CONC_BOTTLE_mlh3fr

pmol/kg
Flag_Pr_D_CONC_BOTTLE_mlh3fr

Quality flag for Pr_D_CONC_BOTTLE_mlh3fr

unitless
Nd_D_CONC_BOTTLE_mglfy0

Concentration of dissolved Nd

pmol/kg
SD1_Nd_D_CONC_BOTTLE_mglfy0

One standard deviation of Nd_D_CONC_BOTTLE_mglfy0

pmol/kg
Flag_Nd_D_CONC_BOTTLE_mglfy0

Quality flag for Nd_D_CONC_BOTTLE_mglfy0

unitless
Sm_D_CONC_BOTTLE_drokap

Concentration of dissolved Sm

pmol/kg
SD1_Sm_D_CONC_BOTTLE_drokap

One standard deviation of Sm_D_CONC_BOTTLE_drokap

pmol/kg
Flag_Sm_D_CONC_BOTTLE_drokap

Quality flag for Sm_D_CONC_BOTTLE_drokap

unitless
Eu_D_CONC_BOTTLE_zb3bss

Concentration of dissolved Eu

pmol/kg
SD1_Eu_D_CONC_BOTTLE_zb3bss

One standard deviation of Eu_D_CONC_BOTTLE_zb3bss

pmol/kg
Flag_Eu_D_CONC_BOTTLE_zb3bss

Quality flag for Eu_D_CONC_BOTTLE_zb3bss

unitless
Gd_D_CONC_BOTTLE_ofrvjw

Concentration of dissolved Gd

pmol/kg
SD1_Gd_D_CONC_BOTTLE_ofrvjw

One standard deviation of Gd_D_CONC_BOTTLE_ofrvjw

pmol/kg
Flag_Gd_D_CONC_BOTTLE_ofrvjw

Quality flag for Gd_D_CONC_BOTTLE_ofrvjw

unitless
Tb_D_CONC_BOTTLE_8muviu

Concentration of dissolved Tb

pmol/kg
SD1_Tb_D_CONC_BOTTLE_8muviu

One standard deviation of Tb_D_CONC_BOTTLE_8muviu

pmol/kg
Flag_Tb_D_CONC_BOTTLE_8muviu

Quality flag for Tb_D_CONC_BOTTLE_8muviu

unitless
Dy_D_CONC_BOTTLE_i378o5

Concentration of dissolved Dy

pmol/kg
SD1_Dy_D_CONC_BOTTLE_i378o5

One standard deviation of Dy_D_CONC_BOTTLE_i378o5

pmol/kg
Flag_Dy_D_CONC_BOTTLE_i378o5

Quality flag for Dy_D_CONC_BOTTLE_i378o5

unitless
Ho_D_CONC_BOTTLE_kppkgb

Concentration of dissolved Ho

pmol/kg
SD1_Ho_D_CONC_BOTTLE_kppkgb

One standard deviation of Ho_D_CONC_BOTTLE_kppkgb

pmol/kg
Flag_Ho_D_CONC_BOTTLE_kppkgb

Quality flag for Ho_D_CONC_BOTTLE_kppkgb

unitless
Er_D_CONC_BOTTLE_uomlxl

Concentration of dissolved Er

pmol/kg
SD1_Er_D_CONC_BOTTLE_uomlxl

One standard deviation of Er_D_CONC_BOTTLE_uomlxl

pmol/kg
Flag_Er_D_CONC_BOTTLE_uomlxl

Quality flag for Er_D_CONC_BOTTLE_uomlxl

unitless
Tm_D_CONC_BOTTLE_v95caj

Concentration of dissolved Tm

pmol/kg
SD1_Tm_D_CONC_BOTTLE_v95caj

One standard deviation of Tm_D_CONC_BOTTLE_v95caj

pmol/kg
Flag_Tm_D_CONC_BOTTLE_v95caj

Quality flag for Tm_D_CONC_BOTTLE_v95caj

unitless
Yb_D_CONC_BOTTLE_8ykca4

Concentration of dissolved Yb

pmol/kg
SD1_Yb_D_CONC_BOTTLE_8ykca4

One standard deviation of Yb_D_CONC_BOTTLE_8ykca4

pmol/kg
Flag_Yb_D_CONC_BOTTLE_8ykca4

Quality flag for Yb_D_CONC_BOTTLE_8ykca4

unitless
Lu_D_CONC_BOTTLE_b0i7yh

Concentration of dissolved Lu

pmol/kg
SD1_Lu_D_CONC_BOTTLE_b0i7yh

One standard deviation of Lu_D_CONC_BOTTLE_b0i7yh

pmol/kg
Flag_Lu_D_CONC_BOTTLE_b0i7yh

Quality flag for Lu_D_CONC_BOTTLE_b0i7yh

unitless
Cr_D_CONC_BOTTLE_uqdtta

Concentration of dissolved Cr

nmol/kg
SD1_Cr_D_CONC_BOTTLE_uqdtta

One standard deviation of Cr_D_CONC_BOTTLE_uqdtta

nmol/kg
Flag_Cr_D_CONC_BOTTLE_uqdtta

Quality flag for Cr_D_CONC_BOTTLE_uqdtta

unitless
Pb_D_CONC_BOTTLE_i4na0j

Concentration of dissolved Pb

pmol/kg
SD1_Pb_D_CONC_BOTTLE_i4na0j

One standard deviation of Pb_D_CONC_BOTTLE_i4na0j

pmol/kg
Flag_Pb_D_CONC_BOTTLE_i4na0j

Quality flag for Pb_D_CONC_BOTTLE_i4na0j

unitless
Y_D_CONC_FISH_ryknah

Concentration of dissolved Yttrium

pmol/kg
SD1_Y_D_CONC_FISH_ryknah

One standard deviation of Y_D_CONC_FISH_ryknah

pmol/kg
Flag_Y_D_CONC_FISH_ryknah

Quality flag for Y_D_CONC_FISH_ryknah

unitless
La_D_CONC_FISH_9efkaf

Concentration of dissolved La

pmol/kg
SD1_La_D_CONC_FISH_9efkaf

One standard deviation of La_D_CONC_FISH_9efkaf

pmol/kg
Flag_La_D_CONC_FISH_9efkaf

Quality flag for La_D_CONC_FISH_9efkaf

unitless
Ce_D_CONC_FISH_4si6pa

Concentration of dissolved Ce

pmol/kg
SD1_Ce_D_CONC_FISH_4si6pa

One standard deviation of Ce_D_CONC_FISH_4si6pa

pmol/kg
Flag_Ce_D_CONC_FISH_4si6pa

Quality flag for Ce_D_CONC_FISH_4si6pa

unitless
Pr_D_CONC_FISH_mypzod

Concentration of dissolved Pr

pmol/kg
SD1_Pr_D_CONC_FISH_mypzod

One standard deviation of Pr_D_CONC_FISH_mypzod

pmol/kg
Flag_Pr_D_CONC_FISH_mypzod

Quality flag for Pr_D_CONC_FISH_mypzod

unitless
Nd_D_CONC_FISH_gaiszt

Concentration of dissolved Nd

pmol/kg
SD1_Nd_D_CONC_FISH_gaiszt

One standard deviation of Nd_D_CONC_FISH_gaiszt

pmol/kg
Flag_Nd_D_CONC_FISH_gaiszt

Quality flag for Nd_D_CONC_FISH_gaiszt

unitless
Sm_D_CONC_FISH_wheali

Concentration of dissolved Sm

pmol/kg
SD1_Sm_D_CONC_FISH_wheali

One standard deviation of Sm_D_CONC_FISH_wheali

pmol/kg
Flag_Sm_D_CONC_FISH_wheali

Quality flag for Sm_D_CONC_FISH_wheali

unitless
Eu_D_CONC_FISH_qhaykk

Concentration of dissolved Eu

pmol/kg
SD1_Eu_D_CONC_FISH_qhaykk

One standard deviation of Eu_D_CONC_FISH_qhaykk

pmol/kg
Flag_Eu_D_CONC_FISH_qhaykk

Quality flag for Eu_D_CONC_FISH_qhaykk

unitless
Gd_D_CONC_FISH_cebboc

Concentration of dissolved Gd

pmol/kg
SD1_Gd_D_CONC_FISH_cebboc

One standard deviation of Gd_D_CONC_FISH_cebboc

pmol/kg
Flag_Gd_D_CONC_FISH_cebboc

Quality flag for Gd_D_CONC_FISH_cebboc

unitless
Tb_D_CONC_FISH_edjnx5

Concentration of dissolved Tb

pmol/kg
SD1_Tb_D_CONC_FISH_edjnx5

One standard deviation of Tb_D_CONC_FISH_edjnx5

pmol/kg
Flag_Tb_D_CONC_FISH_edjnx5

Quality flag for Tb_D_CONC_FISH_edjnx5

unitless
Dy_D_CONC_FISH_extaat

Concentration of dissolved Dy

pmol/kg
SD1_Dy_D_CONC_FISH_extaat

One standard deviation of Dy_D_CONC_FISH_extaat

pmol/kg
Flag_Dy_D_CONC_FISH_extaat

Quality flag for Dy_D_CONC_FISH_extaat

unitless
Ho_D_CONC_FISH_tfxiei

Concentration of dissolved Ho

pmol/kg
SD1_Ho_D_CONC_FISH_tfxiei

One standard deviation of Ho_D_CONC_FISH_tfxiei

pmol/kg
Flag_Ho_D_CONC_FISH_tfxiei

Quality flag for Ho_D_CONC_FISH_tfxiei

unitless
Er_D_CONC_FISH_orcqve

Concentration of dissolved Er

pmol/kg
SD1_Er_D_CONC_FISH_orcqve

One standard deviation of Er_D_CONC_FISH_orcqve

pmol/kg
Flag_Er_D_CONC_FISH_orcqve

Quality flag for Er_D_CONC_FISH_orcqve

unitless
Tm_D_CONC_FISH_hndqhw

Concentration of dissolved Tm

pmol/kg
SD1_Tm_D_CONC_FISH_hndqhw

One standard deviation of Tm_D_CONC_FISH_hndqhw

pmol/kg
Flag_Tm_D_CONC_FISH_hndqhw

Quality flag for Tm_D_CONC_FISH_hndqhw

unitless
Yb_D_CONC_FISH_pyhpll

Concentration of dissolved Yb

pmol/kg
SD1_Yb_D_CONC_FISH_pyhpll

One standard deviation of Yb_D_CONC_FISH_pyhpll

pmol/kg
Flag_Yb_D_CONC_FISH_pyhpll

Quality flag for Yb_D_CONC_FISH_pyhpll

unitless
Lu_D_CONC_FISH_ama6pi

Concentration of dissolved Lu

pmol/kg
SD1_Lu_D_CONC_FISH_ama6pi

One standard deviation of Lu_D_CONC_FISH_ama6pi

pmol/kg
Flag_Lu_D_CONC_FISH_ama6pi

Quality flag for Lu_D_CONC_FISH_ama6pi

unitless
Cd_114_110_D_DELTA_FISH_ucskfd

Atom ratio of dissolved Cd isotopes expressed in conventional DELTA notation referenced to {NIST3108}

per mil
SD1_Cd_114_110_D_DELTA_FISH_ucskfd

One standard deviation of Cd_114_110_D_DELTA_FISH_ucskfd

per mil
Flag_Cd_114_110_D_DELTA_FISH_ucskfd

Quality flag for Cd_114_110_D_DELTA_FISH_ucskfd

unitless
Fe_56_54_D_DELTA_FISH_wrbvdp

Atom ratio of dissolved Fe isotopes expressed in conventional DELTA notation referenced to {IRMM-14}

per mil
SD1_Fe_56_54_D_DELTA_FISH_wrbvdp

One standard deviation of Fe_56_54_D_DELTA_FISH_wrbvdp

per mil
Flag_Fe_56_54_D_DELTA_FISH_wrbvdp

Quality flag for Fe_56_54_D_DELTA_FISH_wrbvdp

unitless
Zn_66_64_D_DELTA_FISH_g3lhnv

Atom ratio of dissolved Zn isotopes expressed in conventional DELTA notation referenced to {Lyon-JMC}

per mil
SD1_Zn_66_64_D_DELTA_FISH_g3lhnv

One standard deviation of Zn_66_64_D_DELTA_FISH_g3lhnv

per mil
Flag_Zn_66_64_D_DELTA_FISH_g3lhnv

Quality flag for Zn_66_64_D_DELTA_FISH_g3lhnv

unitless
Co_DL_CONC_FISH_lzzsxs

Concentration of dissolved labile Co

pmol/kg
SD1_Co_DL_CONC_FISH_lzzsxs

One standard deviation of Co_DL_CONC_FISH_lzzsxs

pmol/kg
Flag_Co_DL_CONC_FISH_lzzsxs

Quality flag for Co_DL_CONC_FISH_lzzsxs

unitless
Cr_D_CONC_FISH_j9dj7v

Concentration of dissolved Cr

nmol/kg
SD1_Cr_D_CONC_FISH_j9dj7v

One standard deviation of Cr_D_CONC_FISH_j9dj7v

nmol/kg
Flag_Cr_D_CONC_FISH_j9dj7v

Quality flag for Cr_D_CONC_FISH_j9dj7v

unitless
Cu_D_CONC_FISH_xcukdw

Concentration of dissolved Cu

nmol/kg
SD1_Cu_D_CONC_FISH_xcukdw

One standard deviation of Cu_D_CONC_FISH_xcukdw

nmol/kg
Flag_Cu_D_CONC_FISH_xcukdw

Quality flag for Cu_D_CONC_FISH_xcukdw

unitless
Fe_D_CONC_FISH_y8e2el

Concentration of dissolved Fe

nmol/kg
SD1_Fe_D_CONC_FISH_y8e2el

One standard deviation of Fe_D_CONC_FISH_y8e2el

nmol/kg
Flag_Fe_D_CONC_FISH_y8e2el

Quality flag for Fe_D_CONC_FISH_y8e2el

unitless
Mn_D_CONC_FISH_3wwjj2

Concentration of dissolved Mn

nmol/kg
SD1_Mn_D_CONC_FISH_3wwjj2

One standard deviation of Mn_D_CONC_FISH_3wwjj2

nmol/kg
Flag_Mn_D_CONC_FISH_3wwjj2

Quality flag for Mn_D_CONC_FISH_3wwjj2

unitless
Ni_D_CONC_FISH_enkl8x

Concentration of dissolved Ni

nmol/kg
SD1_Ni_D_CONC_FISH_enkl8x

One standard deviation of Ni_D_CONC_FISH_enkl8x

nmol/kg
Flag_Ni_D_CONC_FISH_enkl8x

Quality flag for Ni_D_CONC_FISH_enkl8x

unitless
Pb_D_CONC_FISH_c6jwb2

Concentration of dissolved Pb

pmol/kg
SD1_Pb_D_CONC_FISH_c6jwb2

One standard deviation of Pb_D_CONC_FISH_c6jwb2

pmol/kg
Flag_Pb_D_CONC_FISH_c6jwb2

Quality flag for Pb_D_CONC_FISH_c6jwb2

unitless
Sn_D_CONC_FISH_rc5nbn

Concentration of dissolved Sn

pmol/kg
SD1_Sn_D_CONC_FISH_rc5nbn

One standard deviation of Sn_D_CONC_FISH_rc5nbn

pmol/kg
Flag_Sn_D_CONC_FISH_rc5nbn

Quality flag for Sn_D_CONC_FISH_rc5nbn

unitless
Ti_D_CONC_FISH_ntduge

Concentration of dissolved Ti

pmol/kg
SD1_Ti_D_CONC_FISH_ntduge

One standard deviation of Ti_D_CONC_FISH_ntduge

pmol/kg
Flag_Ti_D_CONC_FISH_ntduge

Quality flag for Ti_D_CONC_FISH_ntduge

unitless
Zn_D_CONC_FISH_ir5pu3

Concentration of dissolved Zn

nmol/kg
SD1_Zn_D_CONC_FISH_ir5pu3

One standard deviation of Zn_D_CONC_FISH_ir5pu3

nmol/kg
Flag_Zn_D_CONC_FISH_ir5pu3

Quality flag for Zn_D_CONC_FISH_ir5pu3

unitless
Cd_114_110_D_DELTA_BOAT_PUMP_tfq9zw

Atom ratio of dissolved Cd isotopes expressed in conventional DELTA notation referenced to {NIST3108}

per mil
SD1_Cd_114_110_D_DELTA_BOAT_PUMP_tfq9zw

One standard deviation of Cd_114_110_D_DELTA_BOAT_PUMP_tfq9zw

per mil
Flag_Cd_114_110_D_DELTA_BOAT_PUMP_tfq9zw

Quality flag for Cd_114_110_D_DELTA_BOAT_PUMP_tfq9zw

unitless
Fe_56_54_D_DELTA_BOAT_PUMP_da4n4o

Atom ratio of dissolved Fe isotopes expressed in conventional DELTA notation referenced to {IRMM-14}

per mil
SD1_Fe_56_54_D_DELTA_BOAT_PUMP_da4n4o

One standard deviation of Fe_56_54_D_DELTA_BOAT_PUMP_da4n4o

per mil
Flag_Fe_56_54_D_DELTA_BOAT_PUMP_da4n4o

Quality flag for Fe_56_54_D_DELTA_BOAT_PUMP_da4n4o

unitless
Zn_66_64_D_DELTA_BOAT_PUMP_9l1opj

Atom ratio of dissolved Zn isotopes expressed in conventional DELTA notation referenced to {Lyon-JMC}

per mil
SD1_Zn_66_64_D_DELTA_BOAT_PUMP_9l1opj

One standard deviation of Zn_66_64_D_DELTA_BOAT_PUMP_9l1opj

per mil
Flag_Zn_66_64_D_DELTA_BOAT_PUMP_9l1opj

Quality flag for Zn_66_64_D_DELTA_BOAT_PUMP_9l1opj

unitless
Cd_D_CONC_BOAT_PUMP_htmr5y

Concentration of dissolved Cd

nmol/kg
SD1_Cd_D_CONC_BOAT_PUMP_htmr5y

One standard deviation of Cd_D_CONC_BOAT_PUMP_htmr5y

nmol/kg
Flag_Cd_D_CONC_BOAT_PUMP_htmr5y

Quality flag for Cd_D_CONC_BOAT_PUMP_htmr5y

unitless
Co_DL_CONC_BOAT_PUMP_gf1u7n

Concentration of dissolved labile Co

pmol/kg
SD1_Co_DL_CONC_BOAT_PUMP_gf1u7n

One standard deviation of Co_DL_CONC_BOAT_PUMP_gf1u7n

pmol/kg
Flag_Co_DL_CONC_BOAT_PUMP_gf1u7n

Quality flag for Co_DL_CONC_BOAT_PUMP_gf1u7n

unitless
Cu_D_CONC_BOAT_PUMP_ck7ijw

Concentration of dissolved Cu

nmol/kg
SD1_Cu_D_CONC_BOAT_PUMP_ck7ijw

One standard deviation of Cu_D_CONC_BOAT_PUMP_ck7ijw

nmol/kg
Flag_Cu_D_CONC_BOAT_PUMP_ck7ijw

Quality flag for Cu_D_CONC_BOAT_PUMP_ck7ijw

unitless
Fe_D_CONC_BOAT_PUMP_rycfmj

Concentration of dissolved Fe

nmol/kg
SD1_Fe_D_CONC_BOAT_PUMP_rycfmj

One standard deviation of Fe_D_CONC_BOAT_PUMP_rycfmj

nmol/kg
Flag_Fe_D_CONC_BOAT_PUMP_rycfmj

Quality flag for Fe_D_CONC_BOAT_PUMP_rycfmj

unitless
Mn_D_CONC_BOAT_PUMP_2nm9rj

Concentration of dissolved Mn

nmol/kg
SD1_Mn_D_CONC_BOAT_PUMP_2nm9rj

One standard deviation of Mn_D_CONC_BOAT_PUMP_2nm9rj

nmol/kg
Flag_Mn_D_CONC_BOAT_PUMP_2nm9rj

Quality flag for Mn_D_CONC_BOAT_PUMP_2nm9rj

unitless
Ni_D_CONC_BOAT_PUMP_niuxvg

Concentration of dissolved Ni

nmol/kg
SD1_Ni_D_CONC_BOAT_PUMP_niuxvg

One standard deviation of Ni_D_CONC_BOAT_PUMP_niuxvg

nmol/kg
Flag_Ni_D_CONC_BOAT_PUMP_niuxvg

Quality flag for Ni_D_CONC_BOAT_PUMP_niuxvg

unitless
Pb_D_CONC_BOAT_PUMP_h8bloa

Concentration of dissolved Pb

pmol/kg
SD1_Pb_D_CONC_BOAT_PUMP_h8bloa

One standard deviation of Pb_D_CONC_BOAT_PUMP_h8bloa

pmol/kg
Flag_Pb_D_CONC_BOAT_PUMP_h8bloa

Quality flag for Pb_D_CONC_BOAT_PUMP_h8bloa

unitless
Zn_D_CONC_BOAT_PUMP_ngi8i2

Concentration of dissolved Zn

nmol/kg
SD1_Zn_D_CONC_BOAT_PUMP_ngi8i2

One standard deviation of Zn_D_CONC_BOAT_PUMP_ngi8i2

nmol/kg
Flag_Zn_D_CONC_BOAT_PUMP_ngi8i2

Quality flag for Zn_D_CONC_BOAT_PUMP_ngi8i2

unitless
Ce_D_CONC_BOAT_PUMP_uuyine

Concentration of dissolved Ce

pmol/kg
SD1_Ce_D_CONC_BOAT_PUMP_uuyine

One standard deviation of Ce_D_CONC_BOAT_PUMP_uuyine

pmol/kg
Flag_Ce_D_CONC_BOAT_PUMP_uuyine

Quality flag for Ce_D_CONC_BOAT_PUMP_uuyine

unitless
Pr_D_CONC_BOAT_PUMP_fldqv8

Concentration of dissolved Pr

pmol/kg
SD1_Pr_D_CONC_BOAT_PUMP_fldqv8

One standard deviation of Pr_D_CONC_BOAT_PUMP_fldqv8

pmol/kg
Flag_Pr_D_CONC_BOAT_PUMP_fldqv8

Quality flag for Pr_D_CONC_BOAT_PUMP_fldqv8

unitless
Nd_D_CONC_BOAT_PUMP_zkkda1

Concentration of dissolved Nd

pmol/kg
SD1_Nd_D_CONC_BOAT_PUMP_zkkda1

One standard deviation of Nd_D_CONC_BOAT_PUMP_zkkda1

pmol/kg
Flag_Nd_D_CONC_BOAT_PUMP_zkkda1

Quality flag for Nd_D_CONC_BOAT_PUMP_zkkda1

unitless
Sm_D_CONC_BOAT_PUMP_rk0nrk

Concentration of dissolved Sm

pmol/kg
SD1_Sm_D_CONC_BOAT_PUMP_rk0nrk

One standard deviation of Sm_D_CONC_BOAT_PUMP_rk0nrk

pmol/kg
Flag_Sm_D_CONC_BOAT_PUMP_rk0nrk

Quality flag for Sm_D_CONC_BOAT_PUMP_rk0nrk

unitless
Eu_D_CONC_BOAT_PUMP_qmc5xl

Concentration of dissolved Eu

pmol/kg
SD1_Eu_D_CONC_BOAT_PUMP_qmc5xl

One standard deviation of Eu_D_CONC_BOAT_PUMP_qmc5xl

pmol/kg
Flag_Eu_D_CONC_BOAT_PUMP_qmc5xl

Quality flag for Eu_D_CONC_BOAT_PUMP_qmc5xl

unitless
Gd_D_CONC_BOAT_PUMP_6y7mgq

Concentration of dissolved Gd

pmol/kg
SD1_Gd_D_CONC_BOAT_PUMP_6y7mgq

One standard deviation of Gd_D_CONC_BOAT_PUMP_6y7mgq

pmol/kg
Flag_Gd_D_CONC_BOAT_PUMP_6y7mgq

Quality flag for Gd_D_CONC_BOAT_PUMP_6y7mgq

unitless
Yb_TD_CONC_BOAT_PUMP_3ntipi

Concentration of total dissolved Yb

pmol/kg
SD1_Yb_TD_CONC_BOAT_PUMP_3ntipi

One standard deviation of Yb_TD_CONC_BOAT_PUMP_3ntipi

pmol/kg
Flag_Yb_TD_CONC_BOAT_PUMP_3ntipi

Quality flag for Yb_TD_CONC_BOAT_PUMP_3ntipi

unitless
La_D_CONC_BOAT_PUMP_xqzxoe

Concentration of dissolved La

pmol/kg
SD1_La_D_CONC_BOAT_PUMP_xqzxoe

One standard deviation of La_D_CONC_BOAT_PUMP_xqzxoe

pmol/kg
Flag_La_D_CONC_BOAT_PUMP_xqzxoe

Quality flag for La_D_CONC_BOAT_PUMP_xqzxoe

unitless


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Instruments

Dataset-specific Instrument Name
Generic Instrument Name
GO-FLO Bottle
Generic 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.

Dataset-specific Instrument Name
Thermo Fisher Element 2 HR-ICP-MS
Generic Instrument Name
Inductively Coupled Plasma Mass Spectrometer
Dataset-specific Description
Metal concentrations were measured on a Thermo Fisher Element 2 HR-ICP-MS.
Generic 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.

Dataset-specific Instrument Name
Generic Instrument Name
Pump
Generic Instrument Description
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps

Dataset-specific Instrument Name
seaFAST-pico metal extraction system
Generic Instrument Name
SeaFAST Automated Preconcentration System
Dataset-specific Description
Concentration measurements were made using an offline adaptation of the seaFAST-pico metal extraction system (Elemental Scientific Inc.).
Generic Instrument Description
The seaFAST is an automated sample introduction system for analysis of seawater and other high matrix samples for analyses by ICPMS (Inductively Coupled Plasma Mass Spectrometry).


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Deployments

HLY1502

Website
Platform
USCGC Healy
Report
Start Date
2015-08-09
End Date
2015-10-12
Description
Arctic transect encompassing Bering and Chukchi Shelves and the Canadian, Makarov and Amundsen sub-basins of the Arctic Ocean. The transect started in the Bering Sea (60°N) and traveled northward across the Bering Shelf, through the Bering Strait and across the Chukchi shelf, then traversing along 170-180°W across the Alpha-Mendeleev and Lomonosov Ridges to the North Pole (Amundsen basin, 90°N), and then back southward along ~150°W to terminate on the Chukchi Shelf (72°N). Additional cruise information is available in the GO-SHIP Cruise Report (PDF) and from the Rolling Deck to Repository (R2R): https://www.rvdata.us/search/cruise/HLY1502


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Project Information

U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)


Coverage: Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01)


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.


Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean (GEOTRACES Arctic Bioactive Trace Metals)

Coverage: Arctic Ocean


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.



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Program Information

U.S. GEOTRACES (U.S. GEOTRACES)


Coverage: Global


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.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)

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