Cruise>Climate Variability and Predictability (CLIVAR) A22,A20 (AT20, EM122)

The hydrographic surveys will consist of approximately 180 full water column CTD/LADCP casts along the trackline. Each cast will acquire up to 36 water samples on the upcast, which will be analyzed for salinity, oxygen, and nutrient concentrations. Water samples will also be analyzed during the cruise for dissolved inorganic carbon (DIC), pH, total alkalinity and transient tracers (CFCs and SF6). Additional water samples will be collected and stored for shore-based analysis of dissolved organic carbon (DOC), helium/tritium, 13C/14C, and chromophoric dissolved organic matter (CDOM). Underway measurements will include surface pCO2, temperature, conductivity, dissolved oxygen, fluorescence, various meteorological parameters, and bathymetry.
  • Cite as: Rolling Deck to Repository (R2R) Program (2012): Water Column Sonar Data Collection (AT20, EM122). National Centers for Environmental Information, NOAA. doi:10.7284/110012 [access date]
gov.noaa.ngdc.mgg.wcd:AT20_EM122
Other Access Online access information not available.
Distribution Formats
  • >Kongsberg/Simrad ME70 raw files (Version: 1)
    • File Specification: Kongsberg/Simrad ME70 raw files are functionally equivalent to Ex60 raw files and contain power and optionally angular position data with each beam identified by an independent transducer channel. See the Simrad ME70 interface specification manual for further information.
Ordering Instructions Contact the NGDC Water Column Sonar Data Manage to order data
Distributor Chuck Anderson
Water Column Sonar Data Manager
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
(303) 497-4742
wcd.info@noaa.gov
Dataset No POCs available for this dataset
Dataset No POCs available for this dataset
Dataset No POCs available for this dataset
Time Period 2012-03-24T20:39:09 to 2012-05-15T08:28:38
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
N: 86.2104866
S: 13.7359958
E: 189.38270645
W: 179.29019555
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • creation: 2012-03-24
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose The main objective is to conduct a hydrographic survey nominally along longitudes 66 W and 52W including shipboard CTD, ADCP, LADCP and Niskin bottle sampling of the water column. This is part of the U.S. CLIVAR Carbon / Repeat Hydrography program that aims to identify changes in ocean properties and circulation through time.
Use Limitations
  • These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
  • Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: Rolling Deck to Repository (R2R) Program (2012): Water Column Sonar Data Collection (AT20, EM122). National Centers for Environmental Information, NOAA. doi:10.7284/110012 [access date]
Custodians
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Resource Providers
  • University-National Oceanographic Laboratory System (UNOLS)
Sponsors
  • University-National Oceanographic Laboratory System (UNOLS)
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering
  • Earth Science > Oceans > Aquatic Sciences > Fisheries
  • Earth Science > Oceans > Ocean Acoustics
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
  • Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
  • In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
Place keywords International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
  • North Atlantic Ocean
Global Change Master Directory (GCMD) Location Keywords
  • Global
  • Sea Floor
Keywords
    Use Constraints
    • Cite as: Rolling Deck to Repository (R2R) Program (2012): Water Column Sonar Data Collection (AT20, EM122). National Centers for Environmental Information, NOAA. doi:10.7284/110012 [access date]
    Access Constraints
    • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
    • Resource will be available one year after initial collection.
    Fees
    • Free
    Lineage information for: series
    Processor
    Acquisition Information (collection)
    Instrument
    • Kongsberg EM122
    • SBE 911plus CTD
    • Kongsberg EM122
    • Ocean Surveyor ADCP
    Platform
    • Atlantis (AT)
    Operation
    • AT20
    Last Modified: 2017-05-30
    For questions about the information on this page, please email: wcd.info@noaa.gov