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    • Cloud amount/frequency, NITRATE and other data from ALPHA HELIX in the Coastal Waters of S. Alaska from 1991-07-24 to 1991-11-14 (NCEI Accession 9200039)

    Metadata Updated: March 1, 2025

    The Conductivity, Temperature and Depth (CTD) and other data were collected in Coastal Waters of S. Alaska. Data was collected in five cruises from Ship ALPHA HELIX. The data was collected over a period spanning from July 24, 1991 and November 14, 1991. Data was submitted in a tape from cruises L09-L011 and HX159-160 by Dr. Chirk Chu, Institute of Marine Science, University of Alaska, Fairbanks, AK.

    This dataset contains high-resolution data collected using CTD (conductivity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1 m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t) and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. Data has been processed and is available in F022-CTD-Hi Resolution file format of NODC.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date 2024-10-17T18:03:13Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 1, 2025
    Reference Date(s) November 19, 2002 (publication), February 15, 2023 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2024-10-17T18:03:13Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 1, 2025
    Reference Date(s) November 19, 2002 (publication), February 15, 2023 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:9200039
    Access Constraints Cite as: Chu, Chirk; University of Alaska Fairbanks > Institute of Marine Science (2002). Cloud amount/frequency, NITRATE and other data from ALPHA HELIX in the Coastal Waters of S. Alaska from 1991-07-24 to 1991-11-14 (NCEI Accession 9200039). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9200039. Accessed [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.
    Bbox East Long -146.38
    Bbox North Lat 60.11
    Bbox South Lat 21.75
    Bbox West Long -160.61
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:9200039
    Graphic Preview Type PNG
    Harvest Object Id fb88d70c-1a20-43f0-9e40-b1c69c976399
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-160.61, 21.75], [-146.38, 21.75], [-146.38, 60.11], [-160.61, 60.11], [-160.61, 21.75]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1991-07-24
    Temporal Extent End 1991-11-14

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