This cruise constitutes the first survey section as part of the U.S. participation in an international program named GEOTRACES.
Funding: NSF OCE award 0926423
Science Objectives: To obtain state of the art trace metal and isotope measurements on a suite of samples taken on a mid-latitude zonal transect of the North Atlantic. In particular, sampling targeted the oxygen minimum zone extending off the west African coast near Mauritania, the TAG hydrothermal field, and the western boundary current system along Line W. For additional information, please refer to the GEOTRACES program Web site (https://www.geotraces.org/) for overall program objectives and a summary of properties measured.
Science Activities include seawater sampling via GoFLO and Niskin carousels, in situ pumping (and filtration), CTDO2 and transmissometer sensors, underway pumped sampling of surface waters, and collection of aerosols and rain. Hydrography, CTD and nutrient measurements were supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They provided an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch were provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.
Additional cruise information is available from the Rolling Deck to Repository (R2R): https://www.rvdata.us/search/cruise/KN199-04
Other Relevant Links:
List of cruise participants: [ PDF ]
Cruise track: JPEG image (from Woods Hole Oceanographic Institution, vessel operator)
ADCP data are available from the Currents ADCP group at the University of Hawaii: KN199-04 ADCP
Dataset | Brief Description |
---|---|
GT10 - Nanomolar Nutrients - Surface | Nanomolar concentrations of PO4, NO3, NO2 (surface) |
GT10 - Cruise Tracks | GT10 - Cruise tracks from Athena data - 1 minute fixes. |
GT10 - Cruise Event Log | GT10 - Scientific Sampling Event Log |
GT10 - CTD and PUMP - Cast Events | CTD and PUMP - Cast Events |
GT10 - CTD - GT-C Cast Sheets | CTD - GT-C Cast Sheets (.jpg files) |
GT10 - CTD - GT-C Sample Logs | CTD - GT-C Sample Logs (.jpg files) |
GT10 - Cruise Report | GT10 - Cruise Report |
GT10 - CTD - ODF/SIOR Cast Sheets | CTD - ODF/SIOR Cast Sheets (.jpg files) |
GT10 - CTD - ODF/SIOR Sample Logs | CTD - ODF/SIOR Sample Logs (.jpg files) |
GT10 - CTD - PUMP Sample Logs | CTD - PUMP Sample Logs (.jpg files) |
GT10 - CTD - GT-C Profiles | CTD - GT-C Profiles (1 m downcasts) |
GT10 - CTD - GT-C Bottle | CTD - GT-C Bottle |
GT10 - CTD - ODF/SIOR Profiles | CTD - ODF/SIOR Profiles (1 m downcasts) |
GT10 - CTD - ODF/SIOR Bottle | CTD - ODF/SIOR Bottle |
GT10 - As AP Surface Transects | Surface transects for arsenic speciation, antimony speciation, and alkaline phosphatase activity |
GT10 - Nanomolar Nutrients - Profiles | Nanomolar concentrations of PO4, NO3, NO2 (profile) |
GT10-11 - CFC and SF6 | Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater - GT11 |
GT10 - FIA-AlFe | Shipboard flow injection analyis (FIA) of dissolved Al and Fe. |
GT10-11 - HeNe | Helium, Neon, and Helium-isotope concentrations from KN199-04 (GT10) and KN204-01 (GT11) cruises. |
GT10-11 - Tritium | Tritium concentration from KN199-04 (GT10) and KN204-01 (GT11) cruises. |
GT10 - HeNe_dups | Helium and Neon duplicates from station 1 of KN199-04 (GT10) cruise. |
GT10-11 - dFe and dFe-II | Concentrations of dissolved iron and dissolved iron(II), U.S. GEOTRACES transects |
GT10-11 - GaBa_bottles | Dissolved Ga and Ba from GEOTRACES Rosette bottles from GT10 and GT11 cruises. |
GT10-11 - DIC_TA | Inorganic Carbon data from GT10 and GT11 North Atlantic cruises |
GT10-11 - GaBa_surface | Dissolved Ga and Ba from surface tows from GT10 and GT11 cruises. |
GT10-11 - Neodymium - USC | seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT) |
GT10-11 - Th234 Particulate | Particulate Thorium-234 from in situ pumps. |
GT10-11 - Th234_Total_and_U238 | Water-column total Thorium-234 and Uranium-238. |
GT10-11 - Dissolved Fe Zn Cd conc and isotopes | Dissolved Fe, Zn and Cd concentrations and isotope ratios |
GT10-11 - Particulate trace elements | Trace element concentrations in particles |
GT10-11 - Trace Element Profiles | Trace element profiles from GT-10 and GT-11 |
GT10-11 - Fe Speciation | Profiles of concentrations of dissolved iron-binding ligands and their respective conditional stability constants |
GT10-11 - Cu Speciation | Total dissolved copper and estimates of free Cu2+, ligand concentrations, and conditional stability constants |
GT10-11 - Ra Th | Radium and Thorium isotopes sampled by in situ pump on GT10 and GT11 cruises. |
GT10-11 - Dissolved and Particulate Th and Pa | Depth profiles of seawater dissolved and small and large particulate 232Th, 230Th, and 231Pa |
GT10 - Fe Soluble | Soluble iron (Fe) passed through 10 kDa cross-flow filter, from GT10 cruise. |
GT10-11 - Pb Dissolved | Dissolved lead (Pb), less than 0.2 um, from GT10 and GT11 cruises. |
GT10 - POC_PON | Particulate Organic Carbon (POC) and Nitrogen (PON) data from the GT10 cruise KN199-04 |
GT10-11 - Trace Element References | SAFe and GEOTRACES trace element references |
GT10-11 - Hg Aerosol | Concentration of atmospheric aerosol total mercury (Hg) from the 2010 and 2011 U.S. GEOTRACES cruises |
GT10 - DOC | Dissolved organic carbon (DOC) data from the GT10 cruise KN199-04 |
GT10-11 - Unfiltered Rainwater | Trace metal and major anion concentrations in unfiltered rainwater. |
GT10-11 - Hg Particulate | Particulate total mercury and monomethylmercury - US GEOTRACES NATZ |
GT10-11 - Hg Speciation | Mercury speciation across the US GEOTRACES North Atlantic Zonal Section |
GT10-11 - Fe Mn Zn Cd and Cu | Dissolved Iron, Manganese, Zinc, Cadmium and Copper concentrations |
GT10 - SPM | Suspended Particulate Matter data from the GT10 cruise KN199-04 |
GT10-11 - Filtered Rainwater | Trace metal concentrations in filtered rainwater. |
GT10 - Cysteine Glutathione | Dissolved cysteine and glutathione across the US GEOTRACES North Atlantic Zonal Section |
GT10-11 - Trace Metals Aerosol | Total aerosol trace metal concentrations. |
GT10 - Spctrl_Absp | Spectral absorption coefficients of phytoplankton |
GT10-11 - Co Total Dissolved and Labile | Total dissolved Cobalt and labile Cobalt concentrations from KN199-04 and KN204-01. |
GT10 - CDOM | Absorption coefficients of Colored Dissolved Organic matter (CDOM) |
GT10-11 - Particulate Th and Pa | Depth profiles of seawater suspended dissolved and particulate 232Th, 230Th, and 231Pa |
GT10-11 - Particulate composition | Size-fractionated major and minor particle composition and concentration |
GT10-11 - delta_13C | delta 13C measurement of dissolved inorganic carbon (DIC) from GT10 and GT11 cruises. |
GT10-11 - delta 15N-NO3 | delta 15N of nitrate from GT10 and GT11 cruises. |
GT10-11 - Dissolved Po Pb | Dissolved 210Po and 210Pb from US GEOTRACES North Atlantic KN199-04 and KN204-01 |
GT10-11 - Particulate Po Pb | Particulate 210Po and 210Pb from US GEOTRACES North Atlantic KN199-04 and KN204-01 |
GT10-11 - Nitrate isotopes | Nitrogen and Oxygen isotope ratios of dissolved nitrate |
GT10-11 - Transmissometer GTC | NAZT particle beam attenuation coefficient (Cp) data from GT-C (GEOTRACES carousel) rosette system |
GT10-11 - Transmissometer ODF | NAZT particle beam attenuation coefficient (Cp) data from ODF (Ocean Data Facility) rosette system |
GT10-11 - N African Mineral Dust Composition | North African mineral dust composition from the 2010 and 2011 U.S. GEOTRACES cruises. |
GT10-11 - delta 30Si | Profiles of stable isotopes of silicon (Si) in silicic acid (Si(OH)4) from GT10 and GT11 cruises. |
GT10-11 - Particulate Fe Isotopes | Particulate Fe isotopes (d56Fe, labile d56Fe, labile[Fe], [Cd], [Ba], and [P]) from GT10 and GT11 cruises. |
GT10 - delta-O18 and Deuterium | Depth profiles of seawater d18O and dD from 8 stations of the KN199-04 cruise. |
GT10-11 - DI Water Soluble Aerosol Trace Elements | DI water soluble aerosol trace elements for the North Atlantic GEOTRACES cruises. |
GT10-11 - cellular element quotas | Element quotas of individual phytoplankton cells |
GT10-11 - Pb isotope ratios | Isotope ratios of Pb passing through a 0.2 um Acropak capsule filter from the GEOTRACES North Atlantic Transect. |
GT10-11 - REEs | Dissolved Rare Earth Element (REE) Concentrations in NAZT Section GA03 |
GT10-11 - Aerosol Carbon | Organic carbon and water soluble organic carbon atmospheric loadings from aerosol samples. |
GT10-11 - Aerosol FTICR MS | m/z and peak intensity data for the molecular formulas assigned to each aerosol water soluble organic matter sample run by ESI FTICR MS. |
GT10-11 - Aerosol 1H NMR | Spectral magnitude data for 0.0008 ppm bands from aerosol water soluble organic matter 1H NMR spectra. |
GT10-11 - Thorium and Particle Cycling Inverse Model and parameter estimates | Thorium and Particle Cycling Inverse Model and parameter estimates |
Global Noble Gases | Noble gas and N2/Ar (with associated CTD) data from 93 different cruises spanning the globe |
GT10-11 - Neodymium - LDEO | seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT) |
GT10-11 - Neodymium - UH | seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT) |
Water Mass Fractions - All Years | The fraction of water last ventilated in a given region regardless of the time elapsed since ventilation (in practice, younger than 4000 years). |
Water Mass Fractions - 160 yrs | The fraction of water last ventilated in a given region in a time less than or equal to 160 years ago |
Water Mass Fractions - 39 yrs | The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago |
Water Mass Fractions - Ages | Mean ventilation age reported for 7 regions of the Atlantic |
Chief Scientist: William J. Jenkins
Woods Hole Oceanographic Institution
Co-Chief Scientist: Edward A. Boyle
Massachusetts Institute of Technology
Co-Chief Scientist: Gregory A. Cutter
Old Dominion University
• GA03
• GT10
• USGT-NAT-2010
• KN199-4
• GNAT
• U.S. GEOTRACES NAZT Leg 1
• knorr199-4/5
• Section Cruise (GA03)
• 316N20101015