GHRSST Level 3U NOAA ACSPO SST v2.80 from VIIRS on NOAA-21 Satellite (GDS version 2)
The N21-VIIRS-L3U-ACSPO-v2.80 dataset produced by the NOAA ACSPO system derives the Subskin Sea Surface Temperature (SST) from the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Joint Polar Satellite System (JPSS)-2 satellite, renamed as NOAA-21 (N21). N21 was launched on Nov. 10, 2022, the 3rd satellite in the US NOAA latest JPSS series.
The ACSPO N21 VIIRS L3U (Level 3 Uncollated) product is a gridded version of the ACSPO N21 VIIRS L2P product, also available at PO.DAAC (10.5067/GHV21-2P280). 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). The ACSPO N21 VIIRS SST record is available back to 19 Mar 2023. There are 144 granules per 24 hour interval, with a total data volume of 0.6GB/day. Fill values are reported at all invalid pixels, including pixels >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: SST, a subset of variable l2p_flags (including day/night, land, ice, twilight, and glint flags), wind speed, and the SST minus reference CMC SST (Canadian Met Centre 0.1deg L4 SST, 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 quality controlled in situ data provided by NOAA in situ SST Quality Monitor system (iQuam) using another NOAA system, SST Quality Monitor (SQUAM).
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| accrualPeriodicity | R/P1D |
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|
| describedByType | application/octet-steam |
| description | The N21-VIIRS-L3U-ACSPO-v2.80 dataset produced by the NOAA ACSPO system derives the Subskin Sea Surface Temperature (SST) from the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Joint Polar Satellite System (JPSS)-2 satellite, renamed as NOAA-21 (N21). N21 was launched on Nov. 10, 2022, the 3rd satellite in the US NOAA latest JPSS series. The ACSPO N21 VIIRS L3U (Level 3 Uncollated) product is a gridded version of the ACSPO N21 VIIRS L2P product, also available at PO.DAAC (10.5067/GHV21-2P280). 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). The ACSPO N21 VIIRS SST record is available back to 19 Mar 2023. There are 144 granules per 24 hour interval, with a total data volume of 0.6GB/day. Fill values are reported at all invalid pixels, including pixels >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: SST, a subset of variable l2p_flags (including day/night, land, ice, twilight, and glint flags), wind speed, and the SST minus reference CMC SST (Canadian Met Centre 0.1deg L4 SST, 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 quality controlled in situ data provided by NOAA in situ SST Quality Monitor system (iQuam) using another NOAA system, SST Quality Monitor (SQUAM). |
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|
| identifier | gov.noaa.nodc:GHRSST-N21-VIIRS-L3U-ACSPO |
| issued | 2023-11-21T00:00:00.000+00:00 |
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"SEA SURFACE TEMPERATURE",
"WIND SPEED",
"VIIRS",
"satellite data",
"NOAA-21 (JPSS-2)",
"NOAA Center for Satellite Applications and Research",
"NOAA Office of Satellite and Product Operations",
"NASA JPL PO.DAAC",
"NOAA Office of Satellite and Product Operations",
"Group for High Resolution Sea Surface Temperature (GHRSST)",
"World-Wide Distribution",
"oceanography",
"DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce",
"DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce",
"NASA/JPL/PODAAC > Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA",
"GHRSST > Group for High Resolution Sea Surface Temperature",
"EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED",
"EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE",
"Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature > Sea Surface Skin Temperature",
"VIIRS > Visible-Infrared Imager-Radiometer Suite",
"NOAA-21 > Joint Polar Satellite System - 2",
"GEOGRAPHIC REGION > GLOBAL OCEAN"
]
|
| landingPage | https://www.ncei.noaa.gov/contact |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2026-01-26T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| references |
[
"https://doi.org/10.1117/1.jrs.11.032405",
"https://cmr.earthdata.nasa.gov/search/concepts/C2754899545-POCLOUD.html",
"https://doi.org/10.3390/rs14143476",
"https://www.star.nesdis.noaa.gov/socd/sst/iquam/",
"https://www.star.nesdis.noaa.gov/socd/sst/micros/",
"https://www.star.nesdis.noaa.gov/socd/sst/squam/",
"https://www.ncei.noaa.gov/archive/accession/0123222"
]
|
| rights | otherRestrictions |
| spatial | 179.99,-89.99,-179.99,89.99 |
| temporal | 2023-08-05T00:00:00+00:00/2023-08-05T00:00:00+00:00 |
| title | GHRSST Level 3U NOAA ACSPO SST v2.80 from VIIRS on NOAA-21 Satellite (GDS version 2) |
