Description
The N21-VIIRS-L2P-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 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.
VIIRS L2P SST products are derived at the native sensor resolution (~0.75 km at nadir, ~1.5 km at swath edge) using NOAA's Advanced Clear-Sky Processor for Ocean (ACSPO) system (Jonasson et al. 2022). Data are reported in 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. In ACSPO products, SSTs are derived using the Non-Linear SST (NLSST) algorithms (Petrenko et al., 2014). An ACSPO clear-sky mask (ACSM) is provided in each pixel as part of variable l2p_flags, which also includes day/night, land, ice, twilight, and glint flags (Petrenko et al., 2010). Only ACSM confidently clear pixels with quality level QL=5 are recommended. Per GDS2 specifications, two additional Sensor-Specific Error Statistics layers (SSES bias and standard deviation) are reported in each pixel with QL=5.
The ACSPO VIIRS L2P 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). A reduced size (0.5GB/day), equal-angle gridded (0.02-deg resolution), ACSPO N21 VIIRS L3U product is also available (10.5067/GHV21-3U290) (Ignatov et al., 2017).
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| View this dataset's user's guide | GHRSST Data User Guide | Open resource | |
| Download this dataset through a directory map | HTML | HTTPS endpoint for data browse and download | Open resource |
| View this dataset's publications | HTML | JPSS VIIRS level 3 uncollated sea surface temperature product at NOAA | Open resource |
| View this dataset's publications | HTML | JPSS VIIRS SST Reanalysis Version 3 | Open resource |
| View documentation related to this dataset | HTML | GHRSST Global Data Assembly Center | Open resource |
| View this dataset's data recipes | HTML | Generic Data Readers | Open resource |
| View this dataset's data citation policy | HTML | Data Use and Citation Policy | Open resource |
| View documentation related to this dataset | HTML | Sea Surface Temperature measurement description | Open resource |
| Get a related visualization | JPG | Thumbnail | Open resource |
| Google Scholar search results | HTML | Search results for publications that cite this dataset by its DOI. | Open resource |
| Download this dataset through Earthdata Search | HTML | Browse granule search results in Earthdata Search | Open resource |
| View documentation related to this dataset | HTML | GHRSST Project | Open resource |
| View this dataset's science data product validation documentation | HTML | In situ SST Quality Monitor (iQuam) | Open resource |
| View this dataset's science data product validation documentation | HTML | Monitoring of IR Clear-sky Radiances over Oceans for SST | Open resource |
| View this dataset's science data product validation documentation | HTML | SST Quality Monitor (SQUAM) | Open resource |