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Description

The Geostationary Ocean Color Imager (GOCI) is one of the three payloads onboard the Communication, Ocean and Meteorological Satellite (COMS). It acquires data in 8 spectral bands (6 visible, 2 NIR) with a spatial resolution of about 500m over the Korean sea. The ocean data products that can be derived from the measurements are mainly the chlorophyll concentration, the optical diffuse attenuation coefficients, the concentration of dissolved organic material or yellow substance, and the concentration of suspended particles in the near-surface zone of the sea. In operational oceanography, satellite derived data products are used in conjunction with numerical models and in situ measurements to provide forecasting and now casting of the ocean state. Such information is of genuine interest for many categories of users.

Version Description

Reprocessing of Ocean Color (OC) Datasets

Product Summary

Platforms
COMS
Instruments
GOCI
Spatial Extent

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

Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2010-06-26 to 2021-03-31
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
C3558858528-OB_CLOUD
Data State
COMPLETE
Number of Files/Granules
28958
Processing Level
2
Published
Updated
Science Keywords
Ocean Color ,
Reflectance ,
Aerosol Optical Depth/Thickness ,
Angstrom Exponent ,
Chlorophyll Concentration ,
Attenuation/Transmission ,
Organic Carbon ,
Fluorescence ,
Photosynthetically Active Radiation

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
geophysical_data/angstrom Aerosol Angstrom exponent, 443 to 865 nm N/A int16 -32767 -30000 to 5000 9.9999997473788E-5
geophysical_data/aot_865 Aerosol optical thickness at 865 nm N/A int16 -32767 0 to 30000 9.9999997473788E-5
geophysical_data/chlor_a Chlorophyll Concentration, OCI Algorithm mg m^-3 float32 -32767 0.0010000000474975 to 100 N/A
geophysical_data/chl_ocx Chlorophyll Concentration, OC3 Algorithm mg m^-3 float32 -32767 0.0010000000474975 to 100 N/A
geophysical_data/Kd_490 Diffuse attenuation coefficient at 490 nm, KD2 algorithm m^-1 int16 -32767 50 to 30000 0.00019999999494758
geophysical_data/l2_flags Level-2 Processing Flags N/A int32 N/A -2147483648 to 2147483647 N/A
geophysical_data/poc Particulate Organic Carbon, D. Stramski, 2007 (443/555 version) mg m^-3 int16 -32767 -32000 to -27000 0.20000000298023
geophysical_data/Rrs_412 Remote sensing reflectance at 412 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
geophysical_data/Rrs_443 Remote sensing reflectance at 443 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
geophysical_data/Rrs_490 Remote sensing reflectance at 490 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
geophysical_data/Rrs_555 Remote sensing reflectance at 555 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
geophysical_data/Rrs_660 Remote sensing reflectance at 660 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
geophysical_data/Rrs_680 Remote sensing reflectance at 680 nm sr^-1 int16 -32767 -30000 to 25000 1.9999999949505E-6
navigation_data/cntl_pt_cols Number of Pixel Control Points N/A int32 -32767 0 to 10000 N/A
navigation_data/cntl_pt_rows Number of Scan Control Points N/A int32 -32767 0 to 10000 N/A
navigation_data/latitude Latitude degrees_north float32 -999 -90 to 90 N/A
navigation_data/longitude Longitude degrees_east float32 -999 -180 to 180 N/A
navigation_data/tilt Sensor tilt angle degree float32 -32767 -25 to 25 N/A
scan_line_attributes/clat Center Latitude degrees_north float32 -999 -90 to 90 N/A
scan_line_attributes/clon Center Longitude degrees_east float32 -999 -180 to 180 N/A
scan_line_attributes/csol_z Center Solar Zenith Angle degree float32 -999 -90 to 90 N/A
scan_line_attributes/day Scan day of year days int32 -32767 0 to 366 N/A
scan_line_attributes/detnum Detector Number (zero-based) N/A int8 -1 0 to 25 N/A
scan_line_attributes/elat Ending Latitude degrees_north float32 -999 -90 to 90 N/A
scan_line_attributes/elon Ending Longitude degrees_east float32 -999 -180 to 180 N/A
scan_line_attributes/msec Scan time, milliseconds of day milliseconds int32 -32767 0 to 86400000 N/A
scan_line_attributes/mside Mirror Side (zero-based) N/A int8 -1 0 to 1 N/A
scan_line_attributes/slat Starting Latitude degrees_north float32 -999 -90 to 90 N/A
scan_line_attributes/slon Starting Longitude degrees_east float32 -999 -180 to 180 N/A
scan_line_attributes/year Scan year years int32 -32767 1900 to 2100 N/A
sensor_band_parameters/aw Band-pass averaged absorption coefficient for seawater m^-1 float32 -32767 9.9999997473788E-5 to 5 N/A
sensor_band_parameters/bbw Band-pass averaged backscattering coefficient for seawater m^-1 float32 -32767 4.9999998736894E-6 to 1 N/A
sensor_band_parameters/F0 Mean Solar Flux W m^-2 um^-1 float32 -32767 0 to 250 N/A
sensor_band_parameters/k_no2 NO2 Absorption cross-sections cm^2 molecule^-1 float32 -32767 0 to 0.10000000149012 N/A
sensor_band_parameters/k_oz Ozone Absorption cross-sections cm^-1 float32 -32767 0 to 0.10000000149012 N/A
sensor_band_parameters/Tau_r Rayleigh Optical Thickness N/A float32 -32767 0 to 0.5 N/A
sensor_band_parameters/vcal_gain Vicarious Calibration Gain N/A float32 -32767 0 to 2 N/A
sensor_band_parameters/vcal_offset Vicarious Calibration Offset mW cm^-2 um^-1 sr^-1 float32 -32767 0 to 10 N/A
sensor_band_parameters/wavelength wavelengths nm int32 -32767 0 to 1000 N/A
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