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Description

The primary sensor aboard the PACE spacecraft is the Ocean Color Instrument (OCI). It is a highly advanced optical spectrometer that will be used to measure properties of light over portions of the electromagnetic spectrum. It will enable continuous measurement of light at finer wavelength resolution than previous NASA satellite sensors, extending key system ocean color data records for climate studies. The Ocean Biology DAAC produces near real-time (quicklook) products using the best-available combination of ancillary data from meteorological and ozone data. As such, the inputs and the calibration used are less than optimal. Quicklook products provide a snapshot of the data during a short time period within a single orbit.

Version Description

Reprocessing of Ocean Color (OC) Datasets

Product Summary

Platforms
PACE
Instruments
OCI
Spatial Extent

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

Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2024-03-05 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
C3620139326-OB_CLOUD
Data State
ACTIVE
Number of Files/Granules
23907
Processing Level
2
Published
Updated
Science Keywords
Aerosol Particle Properties

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
geolocation_data/latitude Geodetic Latitude degree_north float32 -999 N/A N/A
geolocation_data/longitude Geodetic Longitude degree_east float32 -999 N/A N/A
geolocation_data/sensor_azimuth_angle Sensor Azimuth Angle, Cell to Sensor degree int16 -32767 N/A 0.0099999997764826
geolocation_data/sensor_zenith_angle Sensor Zenith Angle, Cell to Sensor degree int16 -9999 N/A 0.0099999997764826
geolocation_data/solar_azimuth_angle Solar Azimuth Angle, Cell to Sun degree int16 -9999 N/A 0.0099999997764826
geolocation_data/solar_zenith_angle Solar Zenith Angle, Cell to Sun degree int16 -9999 N/A 0.0099999997764826
geophysical_data/AAOD Absorbing Aerosol Optical Depth at 0.354, 0.388, 0.550 N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/Aerosol_Cld_Fraction_Land_Ocean Aerosol Cloud Fraction in each box km int16 -9999 N/A 0.0010000000474975
geophysical_data/Aerosol_Optical_Depth Retrieved AOT at 0.354,0.388 0.48, 0.55, 0.67, 0.87 1.24, 1.64, 2.2 N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/DT_AerosolLayerHeight Height 1.5KM 3KM, 6KM, 10KM) km int16 -9999 N/A 0.0010000000474975
geophysical_data/DT_AerosolSingleScattAlbedo Single scattering Albedo from Dark Target ocean 0.354 and 0.388 and 0.550, microns N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/l2_flags geophysical_data/l2_flags N/A int16 -9999 N/A N/A
geophysical_data/Land_Sea_Flag Land_Sea_Flag( 0 = Ocean, 1 = Land ) N/A int16 -9999 N/A N/A
geophysical_data/Mean_Gas_Corrected_Reflectance Mean reflectance Gas corrected of pixels at 0.48, 0.55, 0.67, 0.87 1.24, 1.64, 2.2 N/A int16 -9999 N/A 9.9999997473788E-5
geophysical_data/Mean_Reflectance Mean reflectance (not corrected for GAS ) pixels at 0.354 0.388 N/A int16 -9999 N/A 9.9999997473788E-5
geophysical_data/NUV_AerosolCorrCloudOpticalDepth NUV Retrieved Aerosol Corrected Cloud Optical Depth at 0.388 km int16 -9999 N/A 0.10000000149012
geophysical_data/NUV_AerosolIndex NUV Retrieved Aerosol Index (0.354,0.388) Pair km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_AerosolLayerHeight NUV Retrieved Aerosol Layer Height km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_AerosolOpticalDepthOverCloud NUV Retrieved Aerosol Optical Depth Over Cloud at 0.354, 0.388, 0.550 N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_AerosolSingleScattAlbedo NUV Retrieved Aerosol Single Scattering Albedo at 0.354, 0.388, 0.480, 0.550, 0.670 N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_CloudOpticalDepth NUV Retrieved Cloud Optical Depth at 0.388 km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_FinalAlgorithmFlagsACA NUV Final Algorithm Flags for Above-cloud retrievals km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_RadiativeCloudFraction NUV derived Radiative Equivalent Cloud Fraction at 0.388 km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_Reflectivity NUV Retrieved LERs at 0.354, 0.388 N/A int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_Residue NUV Retrieved LER based AI (0.354,0.388) Pair km int16 -9999 N/A 0.0010000000474975
geophysical_data/NUV_UncertaintyACAODToSSA NUV derived percent uncertainity in Aerosol-corrected COD due to plus/minus 0.03 change in SSA. N/A int16 -9999 N/A 0.10000000149012
geophysical_data/NUV_UncertaintyCODToSSA NUV derived percent uncertainity in Aerosol-corrected COD due to plus/minus 0.03 change in SSA. N/A int16 -9999 N/A 0.10000000149012
geophysical_data/O2B_AerosolLayerHeight O2-B Retrieved Aerosol Layer Height km int16 -9999 N/A 0.0010000000474975
geophysical_data/Optical_Depth_Ratio_Small_Ocean_used Fraction of AOT (at 0.55 micron) contributed by fine mode used for UV retrieval km int16 -9999 N/A 0.0010000000474975
geophysical_data/Quality_flag_Aerosol_Optical_Depth Land=0 Ocean,0,1,2,3 km int16 -9999 N/A 0.0010000000474975
geophysical_data/Quality_flag_SingleScattAlbedo Quality_flag_SingleScattAlbedo 0,1,2,3 km int16 -9999 N/A 0.0010000000474975
scan_line_attributes/HAM_side Half-angle mirror side N/A uint8 255 0 to 1 N/A
scan_line_attributes/scantime scan time seconds since 2025-11-16 float64 -32767 0 to 172802 N/A
scan_line_attributes/scan_quality_flags Scan quality flags none uint8 255 N/A N/A
Wavelength_ACA_UNCER Wavelength_ACA_UNCER nm float32 -32767 N/A N/A
Wavelength_Used Wavelength_Used nm float32 -32767 N/A N/A
Wavelength_Used_AAOD Wavelength_Used_AAOD nm float32 -32767 N/A N/A
Wavelength_Used_all Wavelength_Used_all nm float32 -32767 N/A N/A
Wavelength_Used_DTDB Wavelength_Used_DTDB nm float32 -32767 N/A N/A
Wavelength_Used_UV Wavelength_Used_UV nm float32 -32767 N/A N/A
Wavelength_Used_UV1 Wavelength_Used_UV1 nm float32 -32767 N/A N/A
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