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Dataset Overview | National Centers for Environmental Information (NCEI)

GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2) for 2024-06-22 (NCEI Accession 0294653)

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NOAA-20 (N20/JPSS-1/J1) is the second satellite in the US NOAA latest generation Joint Polar Satellite System (JPSS), launched on November 18, 2017. The ACSPO N20/VIIRS L3U (Level 3 Uncollated) product is a gridded version of the ACSPO N20/VIIRS L2P product. The L3U output files are 10-minute granules in netCDF4 format, compliant with the Group for High Resolution Sea Surface Temperature (GHRSST) Data Specification version 2 (GDS2). There are 144 granules per 24hr interval, with a total data volume of 0.5GB/day. Fill values are reported at all invalid pixels, including pixels with >5 km inland. For each valid water pixel (defined as ocean, sea, lake or river, and up to 5 km inland), the following layers are reported: SSTs, a subset of l2p_flags (including day/night, land, ice, twilight, and glint flags), wind speed, and ACSPO SST minus reference (Canadian Met Centre 0.1deg L4 SST). Only L2P SSTs with QL=5 were gridded, so all valid SSTs are recommended for the users. Per GDS2 specifications, two additional Sensor-Specific Error Statistics layers (SSES bias and standard deviation) are reported in each pixel with valid SST. The ACSPO VIIRS L3U product is monitored and validated against iQuam in situ data in SQUAM. The v2.80 is an updated version from the v2.61 with several L2P algorithm improvements including two added thermal front layers, mitigated warm biases in the high latitudes, and improved clear-sky mask.
  • Cite as: Armstrong, Edward M.; NASA JPL PO.DAAC (2024). GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2) for 2024-06-22 (NCEI Accession 0294653). [indicate subset used]. NOAA National Centers for Environmental Information. Unpublished Dataset. https://www.ncei.noaa.gov/archive/accession/0294653. Accessed [date].
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2024-06-22 to 2024-06-22
Spatial Bounding Box Coordinates
West: -179.99
East: 179.99
South: -89.99
North: 89.99
Spatial Coverage Map
General Documentation
Associated Resources
  • GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2)
    • NCEI Collection
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    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:GHRSST-VIIRS_N20-OSPO-L3U
Publication Dates
  • publication: 2024-07-02
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Pending - committed to, but not yet addressed
Data Update Frequency As needed
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • Data in this archival information package are not currently available for public download from NCEI. Please contact NCEI directly for access to these data.
  • accessLevel: Public
  • 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.
Dataset Citation
  • Cite as: Armstrong, Edward M.; NASA JPL PO.DAAC (2024). GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2) for 2024-06-22 (NCEI Accession 0294653). [indicate subset used]. NOAA National Centers for Environmental Information. Unpublished Dataset. https://www.ncei.noaa.gov/archive/accession/0294653. Accessed [date].
Cited Authors
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
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Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
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Use Constraints
  • Cite as: Armstrong, Edward M.; NASA JPL PO.DAAC (2024). GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2) for 2024-06-22 (NCEI Accession 0294653). [indicate subset used]. NOAA National Centers for Environmental Information. Unpublished Dataset. https://www.ncei.noaa.gov/archive/accession/0294653. Accessed [date].
Access Constraints
  • 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.
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  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Acquisition Information (collection)
Instrument
  • VIIRS
Platform
  • NOAA-20 (JPSS-1)
Last Modified: 2024-07-02T20:44:05Z
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