Data Products Overview
Calibrated Radiometry and PolarimetryCalibrated and geolocated radiometry and polarimetry as observed at sensor.
Products
Spectral top-of-atmosphere radiances from OCI
Spectral radiance observed at the top of the atmosphere.
Spectral top-of-atmosphere radiances and polarimetry from SPEXone
Spectral radiance and polarimetry observed at the top of the atmosphere, for all sensor viewing angles.
Spectral top-of-atmosphere radiances and polarimetry from HARP2
Spectral radiance and polarimetry observed at the top of the atmosphere, for all sensor viewing angles.
Ocean Properties to be Produced by OCIBio-optical and biogeochemical properties of seawater constituents in the sunlit upper ocean.
Products
Spectral remote sensing reflectances
Spectral color of the ocean in the ultraviolet-to-near infrared spectral range. [OC_AOP suite]
Spectral diffuse attenuation coefficients
Spectral diffuse attenuation of downwelling irradiance at multiple wavelengths between 350 and 700 nm. [OC_IOP suite]
Spectral phytoplankton absorption coefficients
Spectral absorption coefficients for total phytoplankton absorption at multiple wavelengths between 350 and 700-nm. [OC_IOP suite]
Spectral non-algal particle plus dissolved organic matter absorption coefficients
Spectral absorption coefficients for non-algal particulates and dissolved organic matter at multiple wavelengths between 350 and 700-nm. [OC_IOP suite]
Spectral chromophoric dissolved organic matter absorption coefficients
Spectral absorption coefficients for dissolved organic matter at multiple wavelengths between 350 and 700-nm.
Spectral slope coefficients of chromophoric dissolved organic matter absorption
Absorption spectral slope coefficients of chromophoric dissolved organic matter for multiple wavelength ranges.
Spectral particle backscattering coefficients
Spectral backscattering of the light associated with particulate material, at multiple wavelengths between 350-700 nm. [OC_IOP suite]
Fluorescence line height
Light leaving the surface ocean due to the sun induced chlorophyll fluorescence.
Daily photosynthetically available radiation (PAR)
The amount of sunlight that is useful for photosynthesis that reaches the surface of the ocean over a day. [OC_PAR suite]
Concentration of chlorophyll-a
Near surface concentration of the photosynthetic pigment chlorophyll-a. [OC_BGC suite]
Phytoplankton pigment concentrations
Concentration of specific photosynthetic pigments in the surface ocean.
Net primary production (NPP)
Rate of conversion of dissolved carbon dioxide to organic carbon through photosysthesis minus the carbon used for respiration.
Phytoplankton community composition
Descriptors of the composition of phytoplankton populations.
Concentration of particulate organic carbon
Near surface concentration of the particulate organic carbon. [OC_BGC suite]
Concentration of particulate inorganic carbon
Concentration of particulate inorganic carbon in the surface of the ocean.
Concentration of phytoplankton carbon
Concentration of carbon contained in phytoplankton cells. [OC_BGC suite]
Concentration of dissolved organic carbon
Near surface concentration of dissolved organic carbon.
Suspended particulate matter
Near surface concentration of particles both living (phytoplankton, zooplankton, bacteria) and non-living (detritus, sediments).
Spectral particulate matter absorption coefficients
Spectral absorption coefficients for particulate matter at multiple wavelengths between 350 and 700 nm. Provides information on the concentration of particulate matter in the water column.
Spectral non-algal particle matter absorption coefficients
Spectral absorption coefficients for non-algal particulate matter at multiple wavelengths between 350 and 700 nm. Provides information on the concentration of non-phytoplankton particulate components.
Apparent visible wavelength
An optical water classification index reported as the weighted harmonic mean of visible-range Rrs wavelengths (400-700 nm) [OC_AOP suite]
Surface reflectance
Effective reflectance of the Earth's surface as observed by OCI. [SFREFL suite]
Atmospheric Properties to be Produced by OCIOptical, microphysical, and macrophysical properties of aerosols (e.g. dust, smoke) and clouds in the atmosphere.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles, such as dust and haze.
Aerosol fine mode fraction (over ocean)
Fraction of visible aerosol optical depth from fine mode aerosols over oceans at 550 nm.
Cloud mask
Provides information on whether or not a given pixel is covered by cloud. [CLDMASK suite]
Cloud phase
Provides information on whether a given cloudy pixel is composed of liquid-phase or ice-phase clouds. [CLD suite]
Cloud top pressure of opaque clouds
Atmospheric pressure at the height of the cloud top. [CLD suite]
Optical thickness of liquid and ice clouds
Measurement of extinction of the solar beam due to clouds in the mid-visible wavelength. [CLD suite]
Effective radius of liquid and ice clouds
Ratio of the third to second moments of the cloud droplet size distribution, as an indicator of cloud particle size. [CLD suite]
Water path of liquid and ice clouds
Mass of (liquid or ice) water in clouds in the vertical column. [CLD suite]
Shortwave radiation effect
Reflected solar flux (spectral and directional integral of reflected sunlight).
Land Data Products to be Produced by OCIPhysical and optical properties of the land surface.
Products
Normalized Difference Water Index (NDWI)
Empirical metric using NIR and SWIR (1250 nm) bands to investigate vegetation water content and stress. [LAND suite]
Normalized Difference Infrared Index (NDII)
Empirical metric using NIR and SWIR (1618 nm) bands to investigate vegetation water content and stress. [LAND suite]
Surface reflectance
Effective reflectance of the Earth's surface as observed by OCI. [SFREFL suite]
BRDF/albedo and model parameters
Describes the spectral and directional dependence of surface reflectance.
Normalized difference vegetation index (NDVI)
Empirical metric related to vegetation abundance and health, corrected for atmospheric scattering and absorption. [LAND suite]
Modified Anthocyanin Reflectance Index (mARI)
Hyperspectral vegetation index related to canopy anthocyanin content, a pigment which protects leaves from excess light. [LAND suite]
Carotenoid Content Index (Car)
Hyperspectral vegetation index related to canopy carotenoid content, a pigment which plays a role in photosynthesis and photo-protection. [LAND suite]
Chlorophyll Index Red Edge (CIRE)
Hyperspectral vegetation index related to canopy chlorophyll content using red edge (NIR) surface reflectance measurements. [LAND suite]
Normalized Difference Snow Index (NDSI)
Empirical metric for evaluating the presence of snow in any given pixel. [LAND suite]
Photochemical reflectance index (PRI)
Hyperspectral vegetation index designed to capture subtle shifts in carotenoids and provides information on stress in plants [LAND suite]
Enhanced vegetation index (EVI)
Empirical metric related to vegetation abundance and health, similar to NDVI, with additional resistance to atmospheric effects and sensitivity in densely vegetated regions. [LAND suite]
Chlorophyll-Carotenoid Index (CCI)
Empirical metric related to photosynthesis through chlorophyll/carotenoid pigment dynamics. [LAND suite]
Aerosol and Ocean Properties from HARP2Data products generated as a multi-parameter retrieval for HARP2.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles.
Aerosol size distribution
Multiple parameters describing the distribution of aerosol sizes.
Aerosol complex refractive index
Real and imaginary component of refractive index for each aerosol mode.
Aerosol layer height
Parameterization of aerosol vertical distribution.
Aerosol shape, fraction spherical
Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids.
Spectral remote sensing reflectances
Spectral color of the ocean in the visible spectral range. Used to evaluate performance of atmospheric correction based on aerosol properties retrieved from polarimeters, faciliate synergy with other instruments.
Aerosol single scattering albedo
Ratio of aerosol scattering to extinction.
Ocean surface roughness
Surface roughness defines the directionality of the solar specular reflectance (sunglint), often parameterized by wind speed and direction.
Ocean body properties
In water optical properties that define the water leaving radiance.
Aerosol and Land Surface Properties from HARP2Products produced as a multi-parameter retrieval for HARP2 scenes over land in cloud-free conditions.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles.
Aerosol number concentration
Number of aerosols present within a defined volume or area.
Aerosol size distribution
Multiple parameters describing the distribution of aerosol sizes.
Aerosol complex refractive index
Real and imaginary component of refractive index for each aerosol mode.
Aerosol layer height
Parameterization of aerosol vertical distribution.
Aerosol shape, fraction spherical
Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids.
Aerosol single scattering albedo
Ratio of aerosol scattering to extinction.
Spectrally resolved land surface Bidirectional Reflectance Distribution Function (BRDF)
Defines the reflectance as a function of illumination and observation characteristics.
Spectrally resolved land surface Bidirectional Polarized Distribution Function (BPDF)
Defines the surface polarization as a function of illumination and observation characteristics.
Cloud Properties from HARP2Products that define the cloud state as observed by HARP2.
Products
Cloud detection
Cloud identification, either as binary flag, percentage or other metric.
Cloud physical thickness
Distance between cloud base and cloud top.
Cloud top height
Altitude of cloud top.
Cloud top phase
Determination of liquid or ice phase cloud.
Cloud optical depth
Synonymous with cloud optical thickness.
Liquid cloud droplet effective radius and effective variance
A microphysical property describing droplet size distribution and distribution width.
Ice particle shape and asymmetry parameter
Parameterization of shape is relevant for radiative transfer modeling.
Liquid water path
Can be derived from measures of optical depth and droplet size distribution.
3D cloud field
3D reconstruction of cloud vertical and horizontal distribution using multi-angle polarimetry.
Ocean Surface Properties from HARP2Produced by an algorithm specifically designed for the retrieval of ocean surface characteristics.
Products
Aerosol optical depth in the near infrared
Byproduct of the primary algorithm.
Ocean surface refractive index
Indication of non seawater substances on the ocean surface, such as oil.
Aerosol and Ocean Properties from SPEXoneData products generated as a multi-parameter retrieval for SPEXone scenes over the ocean in cloud-free conditions.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles. Provides information on the concentration of aerosols in a vertical column of atmosphere. May be represented separately for different aerosol size/type modes.
Aerosol size distribution
Multiple parameters describing the distribution of aerosol sizes. May include multiple size modes or bins.
Aerosol complex refractive index
Real and imaginary component of refractive index for each aerosol mode. This defines aerosol extinction, scattering and absorption.
Aerosol layer height
Parameterization of aerosol vertical distribution.
Aerosol shape, fraction spherical
Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids.
Aerosol single scattering albedo
Ratio of aerosol scattering to extinction.
Ocean surface roughness
Surface roughness defines the directionality of the solar specular reflectance (sunglint), often parameterized by wind speed and direction.
Ocean body properties
In water optical properties that define the water leaving radiance. Parameterization schemes may be simple or complex, the validity of which depend on ocean conditions.
Aerosol and Land Surface Properties from SPEXoneProducts produced as a multi-parameter retrieval for SPEXone scenes over land in cloud-free conditions.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles. Provides information on the concentration of aerosols in a vertical column of atmosphere. May be represented separately for different aerosol size/type modes.
Aerosol number concentration
Number of aerosols present within a defined volume or area.
Aerosol size distribution
Multiple parameters describing the distribution of aerosol sizes. May include multiple size modes or bins.
Aerosol complex refractive index
Real and imaginary component of refractive index for each aerosol mode. This defines aerosol extinction, scattering and absorption.
Aerosol layer height
Parameterization of aerosol vertical distribution.
Aerosol shape, fraction spherical
Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids.
Aerosol single scattering albedo
Ratio of aerosol scattering to extinction.
Spectrally resolved land surface Bidirectional Reflectance Distribution Function (BRDF)
Defines the reflectance as a function of illumination and observation characteristics. Often represented as a modal sum of angular distribution kernels.
Spectrally resolved land surface Bidirectional Polarized Distribution Function (BPDF)
Defines the surface polarization as a function of illumination and observation characteristics.
Aerosol and Ocean Properties from OCI + HARP2 + SPEXoneData products generated as a multi-parameter retrieval for HARP2 or SPEXone scenes over the ocean in cloud-free conditions.
Products
Spectral aerosol optical depth
Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles. Provides information on the concentration of aerosols in a vertical column of atmosphere. May be represented separately for different aerosol size/type modes.
Aerosol size distribution
Multiple parameters describing the distribution of aerosol sizes. May include multiple size modes or bins.
Aerosol complex refractive index
Real and imaginary component of refractive index for each aerosol mode. This defines aerosol extinction, scattering and absorption.
Aerosol layer height
Parameterization of aerosol vertical distribution.
Aerosol shape, fraction spherical
Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids.
Aerosol scattering phase matrix
Defined by above parameters, this describes the angular distribution of scattering and polarization.
Aerosol single scattering albedo
Ratio of aerosol scattering to extinction.
Spectral remote sensing reflectances
Spectral color of the ocean in the visible spectral range. Used to evaluate performance of atmospheric correction based on aerosol properties retrieved from polarimeters, faciliate synergy with other instruments
Ocean surface roughness
Surface roughness defines the directionality of the solar specular reflectance (sunglint), often parameterized by wind speed and direction.
Ocean body properties
In water optical properties that define the water leaving radiance. Parameterization schemes may be simple or complex, the validity of which depend on ocean conditions.
Thin cloud contamination
Some algorithms may detect the presence of optically thin clouds (usually cirrus) that would otherwise adversely affect the retrieval of other parameters.