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Description

SST provides global sea surface temperature derived primarily from thermal infrared observations during daytime. Users apply SST to detect fronts and eddies, monitor marine heatwaves, drive ecosystem and habitat models (when paired with chlor_a, Kd_490, PAR), and provide boundary conditions for biogeochemical and climate analyses. Note that IR-based SST is sensitive to clouds, aerosols, and diurnal warming; for minimum diurnal effects, pair with NSST (nighttime SST) and refer to per-file flags before analysis.

Geophysical variables in this suite include:
• bias_sst — Sea Surface Temperature bias (°C)
• flags_sst — Product-specific flags, Sea Surface Temperature (integer bitmask)
• l2_flags — Level-2 Processing Flags (integer bitmask; see bit definitions)
• qual_sst — Quality levels for Sea Surface Temperature (integer quality flag)
• sst — Sea Surface Temperature (°C)
• sstref — Sea Surface Temperature reference (°C)
• stdv_sst — Sea Surface Temperature standard deviation (°C)

Product Summary

Platforms
Suomi-NPP
Instruments
VIIRS
Spatial Extent

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

Location
GLOBAL OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2012-01-02 to Present
Data Partner
Ocean Biology Processing Group (OBPG) ,
Ocean Biology Distributed Active Archive Center (OB.DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/GCDC/OB.DAAC)
Concept ID
C1658475743-OB_DAAC
Data State
ACTIVE
Number of Files/Granules
1218116
Processing Level
2
Published
Updated
Science Keywords
Sea Surface Temperature

Documents

Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
geophysical_data/bias_sst geophysical_data/bias_sst degree_C int16 -32767 -10000 to 10000 0.0049999998882413 0
geophysical_data/flags_sst geophysical_data/flags_sst N/A int16 -32767 -32767 to 32767 N/A N/A
geophysical_data/l2_flags geophysical_data/l2_flags N/A int32 N/A -2147483648 to 2147483647 N/A N/A
geophysical_data/qual_sst geophysical_data/qual_sst N/A int8 -1 0 to 5 N/A N/A
geophysical_data/sst geophysical_data/sst degree_C int16 -32767 -1000 to 10000 0.0049999998882413 0
geophysical_data/sstref geophysical_data/sstref degree_C int16 -32767 -600 to 9000 0.0049999998882413 0
geophysical_data/stdv_sst geophysical_data/stdv_sst degree_C int16 -32767 -10000 to 10000 0.0049999998882413 0
navigation_data/cntl_pt_cols navigation_data/cntl_pt_cols N/A int32 -32767 0 to 10000 N/A N/A
navigation_data/cntl_pt_rows navigation_data/cntl_pt_rows N/A int32 -32767 0 to 10000 N/A N/A
navigation_data/latitude navigation_data/latitude degrees_north float32 -999 -90 to 90 N/A N/A
navigation_data/longitude navigation_data/longitude degrees_east float32 -999 -180 to 180 N/A N/A
navigation_data/tilt navigation_data/tilt degree float32 -32767 -25 to 25 N/A N/A
scan_line_attributes/clat scan_line_attributes/clat degrees_north float32 -999 -90 to 90 N/A N/A
scan_line_attributes/clon scan_line_attributes/clon degrees_east float32 -999 -180 to 180 N/A N/A
scan_line_attributes/csol_z scan_line_attributes/csol_z degree float32 -999 -90 to 90 N/A N/A
scan_line_attributes/day scan_line_attributes/day days int32 -32767 0 to 366 N/A N/A
scan_line_attributes/detnum scan_line_attributes/detnum N/A int8 -1 0 to 25 N/A N/A
scan_line_attributes/elat scan_line_attributes/elat degrees_north float32 -999 -90 to 90 N/A N/A
scan_line_attributes/elon scan_line_attributes/elon degrees_east float32 -999 -180 to 180 N/A N/A
scan_line_attributes/msec scan_line_attributes/msec milliseconds int32 -32767 0 to 86400000 N/A N/A
scan_line_attributes/mside scan_line_attributes/mside N/A int8 -1 0 to 1 N/A N/A
scan_line_attributes/slat scan_line_attributes/slat degrees_north float32 -999 -90 to 90 N/A N/A
scan_line_attributes/slon scan_line_attributes/slon degrees_east float32 -999 -180 to 180 N/A N/A
scan_line_attributes/year scan_line_attributes/year years int32 -32767 1900 to 2100 N/A N/A
sensor_band_parameters/aw sensor_band_parameters/aw m^-1 float32 -32767 9.9999997473788E-5 to 5 N/A N/A
sensor_band_parameters/bbw sensor_band_parameters/bbw m^-1 float32 -32767 4.9999998736894E-6 to 1 N/A N/A
sensor_band_parameters/F0 sensor_band_parameters/F0 W m^-2 um^-1 float32 -32767 0 to 250 N/A N/A
sensor_band_parameters/k_no2 sensor_band_parameters/k_no2 cm^2 molecule^-1 float32 -32767 0 to 0.10000000149012 N/A N/A
sensor_band_parameters/k_oz sensor_band_parameters/k_oz cm^-1 float32 -32767 0 to 0.10000000149012 N/A N/A
sensor_band_parameters/Tau_r sensor_band_parameters/Tau_r N/A float32 -32767 0 to 0.5 N/A N/A
sensor_band_parameters/vcal_gain sensor_band_parameters/vcal_gain N/A float32 -32767 0 to 2 N/A N/A
sensor_band_parameters/vcal_offset sensor_band_parameters/vcal_offset mW cm^-2 um^-1 sr^-1 float32 -32767 0 to 10 N/A N/A
sensor_band_parameters/wavelength sensor_band_parameters/wavelength nm int32 -32767 0 to 20000 N/A N/A
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