Skip to main content

Description

A Group for High Resolution Sea Surface Temperature (GHRSST) Level 2P sea surface temperature produced by The Naval Oceanographic Office (NAVO) from the GOES Imager sensor on the Electro-Optical Infrared Weather System – Geostationary satellite (EWS-G1). The EWS-G1, formerly GOES-13, is the first Department of Defense owned geostationary weather satellite, which has been repositioned over Indian Ocean (IO) region at 60.0° West longitude in January 2018 and fully operational since September 8, 2020, providing timely cloud characterization and theater weather imagery to DoD. The EWS-G1 L2P SST product is calculated based on the 4-micron (band 2) and 11-micron (band 4) channels, providing nighttime and daytime SST. However, daytime SSTs are not produced in areas where the 4-micron channel is strongly affected by Solar radiation, which is defined by solar reflection angle > 50 degree. The L2P data are packaged according to the GHRSST Data Specification version 2 (GDS2) in netCDF4 format at 0.04-degree spatial resolution and stored in 48 half-hour granules per day. The data will be continually updated with 24 hours latency.

Product Summary

Platforms
GOES-13
Instruments
ABI
Spatial Extent

N: 78 S: -78 E: 140 W: -16

Spatial Resolution
4000 Meters x 4000 Meters
Geographic Region
INDIAN OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2021-12-06 to 2023-11-08
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
C2184546470-POCLOUD
Data State
ACTIVE
Number of Files/Granules
35781
Processing Level
2P
Published
Updated
Science Keywords
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

DOD/USNAVY/NAVOCEANO. (2021). GHRSST Level 2P Sea Surface Temperature version 1.0 from the Electro-Optical Infrared Weather System ??? Geostationary (EWSG1) produced by NAVO [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/GHEG1-2PN01 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
adi_dtime_from_sst time difference with NAAPS forecast hour byte -128 -127 to 127 0.1
aerosol_dynamic_indicator Aerosol optical depth provided from the Navy Aerosol Analysis and Prediction System (NAAPS) global aerosol prediction system. count byte -128 -127 to 127 0.006
brightness_temperature_4um non L2P core field; brightness temperature for 3.9 um Band 2 kelvin short -32768 -5000 to 5000 0.01
brightness_temperature_11um non L2P core field; brightness temperature for 10.7 um Band 4 kelvin short -32768 -5000 to 5000 0.01
dt_analysis Deviation from NAVOCEANO 10-km SST gridded field (K10) kelvin byte -128 -127 to 127 0.1
l2p_flags no retrieval made on land or ice. SST over lakes and river are not identified N/A short 2048 0 to 2047 1
lat Latitude of retrievals degrees_north float N/A -90 to 90 1
lon Longitude of retrievals degrees_east float N/A -180 to 180 1
quality_level Based on NAVOCEANO reliability estimates N/A byte -1 0 to 5 1
satellite_zenith_angle satellite zenith angle angular_degree byte -128 -127 to 127 1
sea_surface_temperature SST obtained by regression from buoy measurements at 1 m depth kelvin short -32768 -5000 to 5000 0.01
sses_bias Updated daily based on previous month match-ups kelvin byte -128 -127 to 127 0.01
sses_standard_deviation Updated daily based on previous month match-ups kelvin byte -128 -127 to 127 0.01
sst_dtime time to be added to the reference time to determine actual time of retrieval second short -32768 -32767 to 32767 0.25
time seconds since 1981-01-01 00:00:00 seconds since 1981-01-01 00:00:00 int N/A N/A 1
wind_speed wind speed is not available m s-1 byte -128 -127 to 127 0.15
You're viewing 16 of 16