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Description

This is a Group for High Resolution Sea Surface Temperature (GHRSST) Level 4 sea surface temperature (SST) analysis dataset produced daily on an operational basis by the Naval Oceanographic Office (NAVO) on a global 0.1x0.1 degree grid. The K10 (NAVO 10-km gridded SST analyzed product) L4 analysis uses SST observations from the following instruments: Advanced Very High Resolution Radiometer (AVHRR), Visible Infrared Imaging Radiometer Suite (VIIRS), and Spinning Enhanced Visible and InfraRed Imager (SEVIRI). The AVHRR data for this comes from the MetOp-A, MetOp-B, and NOAA-19 satellites; VIIRS data is sourced from the Suomi_NPP satellite; SEVIRI data comes from the Meteosat-8 and -11 satellites. The age (time-lag), reliability, and resolution of the data are used in the weighted average with the analysis tuned to represent SST at a reference depth of 1-meter. Input data from the AVHRR Pathfinder 9km climatology dataset (1985-1999) is used when no new satellite SST retrievals are available after 34 days. Comparing with its predecessor (DOI: https://doi.org/10.5067/GHK10-L4N01 ), this updated dataset has no major changes in Level-4 interpolated K10 algorithm, except for using different satellite instrument data, and updating metadata and file format. The major updates include: (a) updated and enhanced the granule-level metadata information, (b) converted the SST file from GHRSST Data Specification (GDS) v1.0 to v2.0, (c) added the sea_ice_fraction variable to the product, and (d) updated the filename convention to reflect compliance with GDS v2.0.

Product Summary

Platforms
METEOSAT-9 ,
METEOSAT-11 ,
METOP-A ,
Suomi-NPP ,
METOP-B
Instruments
SEVIRI ,
AVHRR ,
VIIRS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
0.1 Decimal Degrees x 0.1 Decimal Degrees
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2019-01-09
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC) ,
Naval Oceanographic Office, U.S. Navy, U.S. Department of Defense (DOD/USNAVY/NAVOCEANO)
Concept ID
C2036881956-POCLOUD
Data State
ACTIVE
Number of Files/Granules
2516
Processing Level
4
Published
Updated
Science Keywords
Sea Surface Temperature ,
Sea Surface Temperature

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

NASA Jet Propulsion Laboratory (JPL). (2018). GHRSST Level 4 K10_SST Global 10 km Analyzed Sea Surface Temperature from Naval Oceanographic Office (NAVO) in GDS2.0 [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/GHK10-L4N01 Date Accessed: 2025-12-14

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
analysed_sst This data is a 10km gridded analysed sea surface temperature. kelvin float 1.0E+30 -20 to 350 1
analysis_error Error standard deviation estimate. kelvin float 1.0E+30 -32767 to 32767 1
lat Geographical coordinates, WGS84 datum degrees_north float N/A -90 to 90 1
lon Geographical coordinates, WGS84 datum degrees_east float N/A -180 to 180 1
mask Mask can be used to further filter the data N/A byte -128 1 to 31 1
sea_ice_fraction NAVO MCSST group does not provide sea ice fraction data. 1 float 1.0E+30 0 to 100 1
time Nominal time of Level 4 analysis seconds since 1981-01-01 00:00:00 int N/A N/A 1
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