GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite
(VIIRS_N20-STAR-L3U-v2.80)| Version | 2.80 |
| Processing Level | 3 |
| Start/Stop Date | 2018-Jan-05 to Present |
| Short Name | VIIRS_N20-STAR-L3U-v2.80 |
| Description | 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 available here https://podaac.jpl.nasa.gov/dataset/VIIRS_N20-STAR-L2P-v2.80. 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; available at https://www.doi.org/10.5067/GHCMC-4FM03 ). 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. |
| DOI | 10.5067/GHV20-3UO28 |
| Measurement | OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE |
| Platform/Sensor | NOAA-20 / Platform Name: Joint Polar Satellite System - 1 (NOAA-20) Orbit Period: 102.0 minutes Inclination Angle: 99.0 degrees VIIRS SENSOR Name: Visible-Infrared Imager-Radiometer Suite (VIIRS) Swath Width: 3040.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | Group for High Resolution Sea Surface Temperature (GHRSST) |
| Data Provider | Publisher: PO.DAAC Creator: NOAA Satellite Applications and Research (STAR) Release Place: Suitland, MD, USA Release Date: 2021-Nov-25 Resource: https://www.star.nesdis.noaa.gov/star/index.php |
| Format | netCDF-4 |
| Keyword(s) | NOAA, STAR, VIIRS, OSPO, ACSPO, SST, GHRSST, GDS2, N20, v2.80 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 0.02 Decimal Degrees x 0.02 Decimal Degrees Temporal Resolution: Hourly - < Daily Coverage Region: GLOBAL North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2018-Jan-05 to Present Granule Time Span: 2018-Jan-05 to 2024-Apr-24 Projection Projection Type: Cylindrical Lat-Lon Projection Detail: Geolocation information included for each pixel Ellipsoid: WGS 84 |
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| us-west-2 | |
| podaac-ops-cumulus-protected/VIIRS_N20-STAR-L3U-v2.80/ | |
| podaac-ops-cumulus-public/VIIRS_N20-STAR-L3U-v2.80/ | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | NOAA Satellite Applications and Research (STAR). 2021. GHRSST Level 3U NOAA/ACSPO SST from VIIRS on NOAA-20. Ver. 2.80. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GHV20-3UO28
For more information see Data Citations and Acknowledgments.
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| Journal Reference | Petrenko, B., A. Ignatov, Y. Kihai, J. Stroup, and P. Dash. 2014. Evaluation and selection of SST regression algorithms for JPSS VIIRS, J. Geophys. Res. Atmos., 119, 8. https://doi.org/10.1002/2013JD020637 B. Petrenko, A. Ignatov, Y. Kihai, and A. Heidinger. 2010. Clear-Sky Mask for the Advanced Clear-Sky Processor for Oceans, Journal of Atmospheric and Oceanic Technology, 27, 10. https://doi.org/10.1175/2010JTECHA1413.1 |
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| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| 2.80 | GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite | 2021-10-12 | ACTIVE | 2021-10-12T06:06:00.000Z |
| 2.61 | GHRSST Level 3U OSPO dataset v2.61 from VIIRS on NOAA-20 Satellite (GDS v2) | 2023-06-13 | RETIRED. | 2023-06-13T00:26:00.000Z |
| 2.60 | GHRSST GDS2 Level 3U Global Skin Sea Surface Temperature version 2.60 from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the NOAA-20 (JPSS-1) satellite created by the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) | 2023-06-13 | RETIRED. | 2023-06-13T00:39:00.000Z |