Data Products Table
Calibrated Radiometry and Polarimetry | Ocean Properties to be Produced by OCI | Atmospheric Properties to be Produced by OCI | Land Data Products to be Produced by OCI | Aerosol and Ocean Properties from HARP2 and SPEXone | Ocean Surface Properties from HARP2 | Aerosol and Land Surface Properties from HARP2 and SPEXone | Cloud Properties from HARP2 and SPEXone
| Calibrated Radiometry and Polarimetry Calibrated and geolocated radiometry and polarimetry as observed at sensor. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Spectral top-of-atmosphere radiances from OCI | Spectral radiance observed at the top of the atmosphere. | W m-2 um-1 sr-1 | Level-1B 1-km at nadir; daily - Level-1C TBD; daily | Standard product | Level-1C draft data format and examples |
| 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. | Various | Level-1B TBD; daily - Level-1C TBD; daily | Standard product | Level-1C draft data format and examples |
| 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. | Various | Level-1B TBD; daily - Level-1C TBD; daily | Standard product | Level-1C draft data format and examples |
| Ocean Properties to be Produced by OCI Bio-optical and biogeochemical properties of seawater constituents in the sunlit upper ocean. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Spectral remote sensing reflectances | Spectral color of the ocean in the ultraviolet-to-near infrared spectral range. Used as input into algorithms to retrieve information about colored dissolved organic matter, phytoplankton, non-algal particles, and other aquatic constituents. Provided in continuous 2.5-nm steps from 350 to 717.5-nm with a resolution (bandwidth) of 5-nm. | sr-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Boss, Zhai, Krotkov, Chowdhary, Stamnes, Zhang In situ measurement protocols |
| Spectral diffuse attenuation coefficients | Spectral diffuse attenuation of downwelling irradiance at multiple wavelengths between 350 and 700-nm. Provides indices of water clarity and light penetration. | m-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Boss, Stramski, Odermatt In situ measurement protocols |
| Spectral phytoplankton absorption coefficients | Spectral absorption coefficients for total phytoplankton absorption at multiple wavelengths between 350 and 700-nm. Provides information on phytoplankton physiology, abundance, and community composition. | m-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Twardowski, Stramski, Shuchman, Pahlevan, Siegel, Barnes, Stamnes, Chowdhary In situ measurement protocols |
| 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. Provides information on the concentrations of the dissolved component of organic carbon and the detrital (non-algal) component of the particulate assembly. | m-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Twardowski, Stramski, Barnes, Stamnes, Chowdhary In situ measurement protocols |
| Spectral chromophoric dissolved organic matter absorption coefficients | Spectral absorption coefficients for dissolved organic matter at multiple wavelengths between 350 and 700-nm. Provides information on the concentration of the dissolved component of organic carbon. | m-1 | TBD | Test | SAT member: Stramski In situ measurement protocols |
| Spectral slope coefficients of chromophoric dissolved organic matter absorption | Absorption spectral slope coefficients of chromophoric dissolved organic matter for multiple wavelength ranges: 275-295, 350-400, 380-600 nm. Provides information on the contribution of land-derived dissolved organic matter, relative contribution of land- versus marine-derived dissolved organic matter, and as a relative measure of solar photobleaching. | nm-1 | TBD | Test | SAT member: Stramski In situ measurement protocols |
| Spectral particle backscattering coefficients | Spectral backscattering of the light associated with particulate material, at multiple wavelengths between 350-700 nm. Provides an indicator of the concentration of particules in the ocean and a proxy indicator of particulate carbon concentrations. | m-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Twardowski, Stramski, Shuchman, Pahlevan, Barnes, Stamnes, Chowdhary, Zhang, Odermatt |
| Fluorescence line height | Light leaving the surface ocean due to the sun induced chlorophyll fluorescence. Provides an indicator of phytoplankton physiology (health?). | W m-2 um-1 sr-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT member: Westberry |
| Daily photosynthetically available radiation (PAR) | The amount of sunlight that is useful for photosynthesis, defined here as the 400-700 nm spectral range, that reaches the surface of the ocean over a day. As phytoplankton require light to convert inorganic carbon to organic carbon, PAR provides a critical parameter for understanding the oceanic carbon cycle. | Einsteins m-1 d-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT member: Boss |
| Instantaneous photosynthetically available radiation (PAR) | The amount of sunlight that is useful for photosynthesis, defined here as the 400-700 nm spectral range, that reaches the surface of the ocean at the moment of satellite data collection. As phytoplankton require light to convert inorganic carbon to organic carbon, PAR provides a critical parameter for understanding the oceanic carbon cycle. | Einsteins m-1 s-1 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Provisional | ATBD SAT member: Boss |
| Concentration of chlorophyll-a | Near surface concentration of the photosynthetic pigment chlorophyll-a. Provides proxies for algal biomass, ecosystem health and function, and eutrophication. | mg m-3 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD SAT members: Gaube, Shuchman, Siegel, Pahlevan, Zhai, Chowdhary, Odermatt In situ measurement protocols |
| Phytoplankton pigment concentrations | Concentration of specific photosynthetic pigments in the surface ocean. As different phytoplankton taxa contain their own specific pigment suites, these concentrations provide indicators of presence and abundance of specific types of phytoplankton in the ocean (e.g. harmful algal blooms). | mg m-3 | TBD | Test | SAT members: Gaube, Shuchman, Siegel, Pahlevan In situ measurement protocols |
| Net primary production (NPP) | Rate of conversion of dissolved carbon dioxide to organic carbon through photosysthesis minus the carbon used for respiration. NPP is an important part of the carbon cycle and these products are used in local models (estimating food avaliable to fish populations) all the way up to global climate and Earth System models (to predict information about the oceans of today and tomorrow). | mg C m-2 d-1 | TBD | Test | SAT member: Westberry |
| Phytoplankton community composition | Descriptors of the composition of phytoplankton populations. Different approaches describe these populations in different ways, such as by carbon content or biovolume per class (e.g., diatom contributions vs. cyanobacteria contributions), particle size distributions (or fraction of large cells vs. small cells), or targeted identification of a single class (e.g., detection of a harmful cyanobacteria algal bloom). | Varied per approach. Often described in terms of carbon concentrations (mg C m-3), biovolume (cells mL-1), or size class (% micro-, pico-, nanoplankton) | TBD | Test | SAT members: Gaube, Rousseaux, Shuchman, Siegel, Pahlevan, Hu |
| Concentration of particulate organic carbon | Near surface concentration of the particulate organic carbon. It is a proxy for all living material (phytoplankton, zooplankton, bacteria) and detritus. It is also a venue through which organic carbon, sequestered through the photosynthesis, is transfered towards higher trophic levels and into the deep ocean. | mg m-3 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD In situ measurement protocols |
| Concentration of particulate inorganic carbon | Concentration of particulate inorganic carbon in the surface of the ocean. Used to track the presence and abundance of calcite containing phytoplankton in the open ocean (coccolithophores). | mol m-3 | Level-2 1-km at nadir; daily - Level-3 4-km; daily, 8-day, monthly, annual | Standard product | ATBD |
| Concentration of phytoplankton carbon | Concentration of carbon contained in phytoplankton cells. Provides a proxy for phytoplankton biomass that is often used in primary productivity algorithms and biogeochemical and Earth System models. | mg m-3 | TBD | Test | SAT member: Westberry |
| Concentration of dissolved organic carbon | Near surface concentration of dissolved organic carbon. It is exported into coastal waters from land through rivers and groundwater. In the aquatic environment, it is produced or released by all living material (phytoplankton, zooplankton, bacteria) and detritus. It is a source of energy for bacteria and other microbial organisms and is transferred to higher trophic levels. It typically comprises well over 95% of the organic carbon in the ocean. | mmol m-3 | TBD | Test | |
| Suspended particulate matter | Near surface concentration of particles both living (phytoplankton, zooplankton, bacteria) and non-living (detritus, sediments). | mg m-3 | TBD | Test | SAT member: Pahlevan |
| Atmospheric Properties to be Produced by OCI Optical, microphysical, and macrophysical properties of aerosols (e.g. dust, smoke) and clouds in the atmosphere. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Spectral aerosol optical depth | Spectral measurement of the extinction of the solar beam caused by atmospheric aerosol particles, such as dust and haze, at 380, 440, 500, 550, and 675 nm (and potentially additional wavelengths) over land and oceans. Provides information on the concentration of aerosols in a vertical column of atmosphere. | unitless | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | SAT members: Remer, Lyapustin |
| Aerosol fine mode fraction (over ocean) | Fraction of visible aerosol optical depth from fine mode aerosols over oceans at 550 nm. | unitless | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | SAT members: Remer, Lyapustin |
| Cloud mask | Provides information on whether or not a given pixel is covered by cloud. This is an input to many downstream algorithms, as most process either only cloudy or only cloud-free scenes, and is also useful for climate research. | unitless | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | |
| Cloud phase | Provides information on whether a given cloudy pixel is composed of liquid-phase or ice-phase clouds. Used as an input to downstream processing to inform optical model choices, as well as for climate research. | unitless | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | SAT member: Meyer |
| Cloud top pressure of opaque clouds | Atmospheric pressure at the height of the cloud top. Useful for climate research and in L1c reaggregation. | hPa | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | |
| Optical thickness of liquid and ice clouds | Measurement of extinction of the solar beam due to clouds in the mid-visible wavelength. Used for climate studies. | unitless | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | |
| 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. Used for climate studies. | microns | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, month | Standard product | |
| Water path of liquid and ice clouds | Mass of (liquid or ice) water in clouds in the vertical column. Used for climate studies. | gm-2 | Level-2 1-km (at nadir), daily - Level-3 spatial resolution TBD; daily, 8-day, monthly | Standard product | |
| Shortwave radiation effect | Reflected solar flux (spectral and directional integral of reflected sunlight). | W m-2 | Level-2 1 km (at nadir), daily - Level-3 1°x1°; daily, monthly | Standard product | |
| Land Data Products to be Produced by OCI Physical and optical properties of the land surface. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Surface reflectance | Effective reflectance of the Earth's surface as observed by OCI. Used as an input to downstream land data products. | unitless | TBD | Test | SAT member: Lyapustin |
| BRDF/albedo and model parameters | Describes the spectral and directional dependence of surface reflectance. | unitless | TBD | Test | SAT member: Lyapustin |
| Normalized difference vegetation index (NDVI) | Empirical metric related to vegetation abundance and health, corrected for atmospheric scattering and absorption. | unitless | TBD | Test | |
| Aerosol and Ocean Properties from HARP2 and SPEXone Data products generated as a multi-parameter retrieval for HARP2 or SPEXone scenes over the ocean in cloud-free conditions. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| 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. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol number concentration | Number of aerosols present within a defined volume or area. | per unit area, or volume | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol size distribution | Multiple parameters describing the distribution of aerosol sizes. May include multiple size modes or bins. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol complex refractive index | Real and imaginary component of refractive index for each aerosol mode. This defines aerosol extinction, scattering and absorption. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol layer height | Parameterization of aerosol vertical distribution. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol shape, fraction spherical | Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol scattering phase matrix | Defined by above parameters, this describes the angular distribution of scattering and polarization. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol single scattering albedo | Ratio of aerosol scattering to extinction. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Ocean surface roughness | Surface roughness defines the directionality of the solar specular reflectance (sunglint), often parameterized by wind speed and direction. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| 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. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| 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. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Ocean Surface Properties from HARP2 Produced by an algorithm specifically designed for the retrieval of ocean surface characteristics. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Aerosol optical depth in the near infrared | Byproduct of the primary algorithm. | unitless | TBD | Test | |
| Ocean surface refractive index | Indication of non seawater substances on the ocean surface, such as oil. | unitless | TBD | Test | SAT member: Ottaviano |
| Aerosol and Land Surface Properties from HARP2 and SPEXone Products produced as a multi-parameter retrieval for HARP2 or SPEXone scenes over land in cloud-free conditions. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| 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. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol number concentration | Number of aerosols present within a defined volume or area. | per unit area, or volume | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol size distribution | Multiple parameters describing the distribution of aerosol sizes. May include multiple size modes or bins. | depends on parameterization scheme | GRASP; MAPP; MAPOL; SPEX | ||
| Aerosol complex refractive index | Real and imaginary component of refractive index for each aerosol mode. This defines aerosol extinction, scattering and absorption. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol layer height | Parameterization of aerosol vertical distribution. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol shape, fraction spherical | Fraction of aerosols that are treated as spheres versus other shapes, such as spheroids. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol scattering phase matrix | Defined by above parameters, this describes the angular distribution of scattering and polarization. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Aerosol single scattering albedo | Ratio of aerosol scattering to extinction. | unitless | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| 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. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Spectrally resolved land surface Bidirectional Polarized Distribution Function (BPDF) | Defines the surface polarization as a function of illumination and observation characteristics. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| 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. | depends on parameterization scheme | TBD | Test | GRASP; MAPP; MAPOL; SPEX |
| Cloud Properties from HARP2 and SPEXone Products that define the cloud state as observed by either HARP2 or SPEXone. | |||||
|---|---|---|---|---|---|
| Product | Description and Use | Units | Availability | Status | Additional Info |
| Cloud detection | Cloud identification, either as binary flag, percentage or other metric. | TBD | TBD | Test | SAT member: van Diedenhoven van Diedenhoven et al, 2007 (DOI); van Diedenhoven et al., 2013 (DOI); Sinclair et al., 2017 (DOI) |
| Cloud physical thickness | Distance between cloud base and cloud top. | km | TBD | Test | SAT member: van Diedenhoven van Diedenhoven et al, 2007 (DOI); van Diedenhoven et al., 2013 (DOI); Sinclair et al., 2019 (DOI) |
| Cloud top height | Altitude of cloud top. | km | TBD | Test | SAT member: van Diedenhoven van Diedenhoven et al, 2007 (DOI); van Diedenhoven et al., 2013 (DOI); Sinclair et al., 2017 (DOI) |
| Cloud phase | Determination of liquid or ice phase cloud. | unitless | TBD | Test | SAT member: van Diedenhoven Reidi, et al, 2010 (DOI) |
| Liquid cloud optical depth | Synonymous with cloud optical thickness. | unitless | TBD | Test | SAT member: van Diedenhoven Alexandrov et al., 2012 (DOI); Alexandrov et al., 2012 (DOI); McBride et al., 2019 (DOI) |
| Liquid cloud droplet effective radius | A microphysical property describing droplet size distribution. | microns | TBD | Test | SAT member: van Diedenhoven Alexandrov et al., 2012 (DOI); Alexandrov et al., 2012 (DOI); McBride et al., 2019 (DOI) |
| Liquid cloud droplet effective variance | A microphysical property describing droplet size distribution width. | unitless | TBD | Test | SAT member: van Diedenhoven Alexandrov et al., 2012 (DOI); Alexandrov et al., 2012 (DOI); McBride et al., 2019 (DOI) |
| Ice cloud optical depth | Synonymous with cloud optical thickness. | unitless | TBD | Test | SAT member: van Diedenhoven van Diedenhoven et al., 2020 (DOI) |
| Ice particle shape and asymmetry parameter | Parameterization of shape is relevant for radiative transfer modeling. | depends on parameterization scheme | TBD | Test | SAT member: van Diedenhoven van Diedenhoven et al., 2020 (DOI) |
| Liquid water path | Can be derived from measures of optical depth and droplet size distribution. | TBD | TBD | Test | |