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Description

This data suite includes particulate organic carbon concentration from ocean-color reflectance using the Stramski et al. (2007) algorithm based on the Rrs(443)/Rrs(555) band ratio. POC is widely used to quantify surface carbon stocks, support biogeochemical and export-flux studies, and provide ecological context alongside chlor_a, bbp, Kd, and SST. The 443/555 formulation is best suited to open-ocean (Case-1) conditions; uncertainties increase in optically complex coastal/inland waters or under strong aerosol/glint. Users should refer to product documentation and quality flags for screening and mission-specific caveats.

Geophysical variables in this suite include:
• poc — Particulate Organic Carbon (mg C m⁻³)

Version Description

Reprocessing of Ocean Color (OC) Datasets

Product Summary

Platforms
NOAA-21
Instruments
VIIRS
Spatial Extent

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

Geographic Region
GLOBAL OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2022-11-10 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
C3779579630-OB_CLOUD
Data State
ACTIVE
Number of Files/Granules
208
Processing Level
3
Published
Updated
Science Keywords
Organic Carbon

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
lat Latitude degrees_north float32 -999 -90 to 90 N/A
lon Longitude degrees_east float32 -999 -180 to 180 N/A
palette palette N/A uint8 N/A N/A N/A
poc Particulate Organic Carbon, D. Stramski, 2007 (443/555 version) mg m^-3 int16 -32767 -32000 to -27000 0.20000000298023
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