EM122 Water Column Sonar Data Collected During AT20

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). 2012. 'EM122 Water Column Sonar Data Collected During AT20'. NOAA National Centers for Environmental Information. [access date]
  • AT20_EM122
  • NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:AT20_EM122
gov.noaa.ngdc.mgg.wcd:AT20_EM122
Search Data
Distribution Formats
  • >Kongsberg/Simrad ME70 raw files (Version:1)
    • File Specification: Kongsberg/Simrad .raw files are generated by ME70, EK60 or ES60 instruments. They contain power and optionally angular position data with each beam/frequency identified by an independent channel. See the Simrad interface specification manual for further information. The .wcd files are generated by Kongsberg EM302 or EM122 instruments. See Kongsberg documentation for more information.
Ordering Instructions Contact the NCEI Water Column Sonar Data Manager to order data.
Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Water Column Sonar Data Manager
NOAA National Centers for Environmental Information
(303) 497-4742
wcd.info@noaa.gov
Time Period 2012-03-24T20:39:09 to 2012-05-15T08:28:38
Spatial Reference System urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown
Spatial Bounding Box Coordinates
West:179.29019555
East:189.38270645
South:13.7359958
North:86.2104866
Spatial Coverage Map
General Documentation
Associated Resources
    Publication Dates
    • creation: 2012-03-24
    • publication: 2013-12-16
    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). 2012. 'EM122 Water Column Sonar Data Collected During AT20'. NOAA National Centers for Environmental Information. [access date]
    Cited Authors
    • Rolling Deck to Repository (R2R)
    Custodians
    • NOAA National Centers for Environmental Information
    Publishers
    • NOAA National Centers for Environmental Information
    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
    Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    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
    • Vertical Location > Water Column
    Use Constraints
    • Cite as: Rolling Deck to Repository (R2R). 2012. 'EM122 Water Column Sonar Data Collected During AT20'. NOAA National Centers for Environmental Information. [access date]
    • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    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 may not be available for up to one year after initial collection.
    Fees
    • Free
    Lineage information for:series
    Acquisition Information (collection)
    Instrument
    • Kongsberg EM122
    • SBE 911plus CTD
    • Kongsberg EM122
    • Ocean Surveyor ADCP
    Platform
    • Atlantis (AT)
    Operation
    • AT20_EM122
    Last Modified: 2020-06-03
    For questions about the information on this page, please email:ncei.info@noaa.gov