GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2)
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.
Dataset Citation
- Cite as: Jonasson, Olafur; Ignatov, Alexander; Kihai, Yury; Gladkova, Irina; Petrenko, Boris; Pryamitsyn, Victor; Baker-Yeboah, Sheekela (2018). GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/7c1m-rw73. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:GHRSST-VIIRS_N20-OSPO-L3U
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
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 | 2018-11-10 to Present |
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West: -180
East: 180
South: -90
North: 90
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Ongoing - data is continually being updated Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | Daily |
Supplemental Information | This collection includes data from the following product(s): GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (GDS version 2) (VIIRS_N20-OSPO-L3U-v2.80); 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) (VIIRS_N20-OSPO-L3U-v2.60); GHRSST Level 3U OSPO dataset v2.61 from VIIRS on NOAA-20 Satellite (GDS v2) (VIIRS_N20-OSPO-L3U-v2.61); GHRSST Level 3U NOAA STAR SST v2.80 from VIIRS on NOAA-20 Satellite (VIIRS_N20-STAR-L3U-v2.80). |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
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Last Modified: 2024-11-01T02:13:39Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov