NASA's Physical Oceanography Distributed Active Archive Center (PO.DAAC) released the NAVO N20/N21 VIIRS L2P v3.0 Sea Surface Temperature (SST) datasets from the Visible Infrared Imaging Radiometer Suite (VIIRS) instruments onboard the Joint Polar Satellite System 1 (JPSS-1) and JPSS-2 satellites, renamed as NOAA-20 (N20) and NOAA-21 (N21).
The newly added N20/N21 datasets complement the existing dataset, NAVO NPP VIIRS L2P (10.5067/GHVRS-2PN30). Both datasets are produced with Naval Oceanographic Office (NAVO) Level-2 SST processor version 3.0 (v3.0). The datasets are formatted in netCDF-4, compliant with the Group for High Resolution Sea Surface Temperature (GHRSST) Data Processing Specification v2.0 (GDS2). Additional details regarding the GHRSST L2P products are available from the GHRSST website.
The L2P datasets are reported in the instrument native swath projection with 750 m (along) x 750 m (cross) spatial resolution, and provide the global near daily-coverage SST at 1-meter depth. Each day consists of 1012 granules with a daily data volume of 15 GB/day. The L2P SST v3.0 is the first release at PO.DAAC derived from the L2P SST processor v3.0, which was upgraded from the v2.0 with several significant improvements in processing algorithms, including contamination detection, cloud detection, and data format upgrades.
For more details, please see documentation on dataset landing pages. We recommend users to download the data with the data-subscriber tool.
References
Jean-François P. Cayula, Douglas A. May, Bruce D. McKenzie, Keith D. Willis. 2013. VIIRS-derived SST at the Naval Oceanographic Office: from evaluation to operation, SPIE digital library, 8724. https://doi.org/10.1117/12.2017965
Jean-François P. Cayula, Douglas A. May, Bruce D. McKenzie. 2014. Analysis of the VIIRS cloud mask, comparison with the NAVOCEANO cloud mask, and how they complement each other, SPIE digital library, 9111. https://doi.org/10.1117/12.2053430
Please contact PO.DAAC User Services with any questions/comments or visit PO.DAAC on Earthdata Forum.