N: 90 S: -90 E: 180 W: -180
Description
The Ocean Color Biogeochemical (OC_BGC) suite provides satellite-derived biogeochemical properties of the upper ocean, produced from calibrated, atmospherically corrected ocean-color inputs from PACE_OCI. These products characterize carbon pools and ecosystem status.
Geophysical variables in this suite include:
• carbon_phyto — Phytoplankton carbon biomass (mg m⁻³)
• carbon_phyto_unc — Phytoplankton carbon biomass standard uncertainty (mg m⁻³)
• chlor_a — Chlorophyll-a concentration (mg m⁻³)
• chlor_a_unc — Chlorophyll-a concentration uncertainty (mg m⁻³)
• poc — Particulate Organic Carbon (mg m⁻³)
• l2_flags — Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings)
Product Summary
Documents
GENERAL DOCUMENTATION
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 Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| geophysical_data/carbon_phyto | Phytoplankton Carbon | mg m^-3 | float32 | -32767 | 0 to 1000 | N/A | N/A |
| geophysical_data/carbon_phyto_unc | Phytoplankton Carbon standard uncertainty | mg m^-3 | float32 | -32767 | 0 to 1000 | N/A | N/A |
| geophysical_data/chlor_a | Chlorophyll Concentration, OCI Algorithm | mg m^-3 | float32 | -32767 | 0.0010000000474975 to 100 | N/A | N/A |
| geophysical_data/chlor_a_unc | Uncertainty in chlorophyll a concentration | mg m^-3 | float32 | -32767 | 0.0010000000474975 to 100 | N/A | N/A |
| geophysical_data/l2_flags | Level-2 Processing Flags | N/A | int32 | N/A | -2147483648 to 2147483647 | N/A | N/A |
| geophysical_data/poc | Particulate Organic Carbon, D. Stramski, 2022 (hybrid version) | mg m^-3 | int16 | -32767 | -32000 to -22000 | 0.20000000298023 | 6400 |
| navigation_data/latitude | Latitude | degrees_north | float32 | -999 | -90 to 90 | N/A | N/A |
| navigation_data/longitude | Longitude | degrees_east | float32 | -999 | -180 to 180 | N/A | N/A |
| navigation_data/tilt | Sensor tilt angle | degree | float32 | -32767 | -25 to 25 | N/A | N/A |
| scan_line_attributes/clat | Center Latitude | degrees_north | float32 | -999 | -90 to 90 | N/A | N/A |
| scan_line_attributes/clon | Center Longitude | degrees_east | float32 | -999 | -180 to 180 | N/A | N/A |
| scan_line_attributes/csol_z | Center Solar Zenith Angle | degree | float32 | -999 | -90 to 90 | N/A | N/A |
| scan_line_attributes/day | Scan day of year | days | int32 | -32767 | 0 to 366 | N/A | N/A |
| scan_line_attributes/detnum | Detector Number (zero-based) | N/A | int8 | -1 | 0 to 25 | N/A | N/A |
| scan_line_attributes/elat | Ending Latitude | degrees_north | float32 | -999 | -90 to 90 | N/A | N/A |
| scan_line_attributes/elon | Ending Longitude | degrees_east | float32 | -999 | -180 to 180 | N/A | N/A |
| scan_line_attributes/msec | Scan time, milliseconds of day | milliseconds | int32 | -32767 | 0 to 86400000 | N/A | N/A |
| scan_line_attributes/mside | Mirror Side (zero-based) | N/A | int8 | -1 | 0 to 1 | N/A | N/A |
| scan_line_attributes/slat | Starting Latitude | degrees_north | float32 | -999 | -90 to 90 | N/A | N/A |
| scan_line_attributes/slon | Starting Longitude | degrees_east | float32 | -999 | -180 to 180 | N/A | N/A |
| scan_line_attributes/time | scan line time in seconds since 1970-1-1 | seconds since 1970-1-1 | float64 | -32767 | N/A | N/A | N/A |
| scan_line_attributes/year | Scan year | years | int32 | -32767 | 1900 to 2100 | N/A | N/A |
| sensor_band_parameters/aw | Band-pass averaged absorption coefficient for seawater | m^-1 | float32 | -32767 | 9.9999997473788E-5 to 5 | N/A | N/A |
| sensor_band_parameters/bbw | Band-pass averaged backscattering coefficient for seawater | m^-1 | float32 | -32767 | 4.9999998736894E-6 to 1 | N/A | N/A |
| sensor_band_parameters/F0 | Mean Solar Flux | W m^-2 um^-1 | float32 | -32767 | 0 to 2500 | N/A | N/A |
| sensor_band_parameters/k_no2 | NO2 Absorption cross-sections | cm^2 molecule^-1 | float32 | -32767 | 0 to 0.10000000149012 | N/A | N/A |
| sensor_band_parameters/k_oz | Ozone Absorption cross-sections | cm^-1 | float32 | -32767 | 0 to 0.10000000149012 | N/A | N/A |
| sensor_band_parameters/Tau_r | Rayleigh Optical Thickness | N/A | float32 | -32767 | 0 to 0.5 | N/A | N/A |
| sensor_band_parameters/vcal_gain | Vicarious Calibration Gain | N/A | float32 | -32767 | 0 to 2 | N/A | N/A |
| sensor_band_parameters/vcal_offset | Vicarious Calibration Offset | mW cm^-2 um^-1 sr^-1 | float32 | -32767 | 0 to 10 | N/A | N/A |
| sensor_band_parameters/wavelength | wavelengths | nm | int32 | -32767 | 0 to 20000 | N/A | N/A |