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Description

On August 17, 1996, the Japanese Space Agency (NASDA - National Space Development Agency) launched the Advanced Earth Observing Satellite (ADEOS). ADEOS was in a descending, Sun synchronous orbit with a nominal equatorial crossing time of 10:30 a.m. Amoung the instruments carried aboard the ADEOS spacecraft was the Ocean Color and Temperature Scanner (OCTS). OCTS is an optical radiometer with 12 bands covering the visible, near infrared and thermal infrared regions. (Eight of the bands are in the VIS/NIR. These are the only bands calibrated and processed by the OBPG) OCTS has a swath width of approximately 1400 km, and a nominal nadir resolution of 700 m. The instrument operated at three tilt states (20 degrees aft, nadir and 20 degrees fore), similar to SeaWiFS.

Version Description

Reprocessing of Ocean Color (OC) Datasets

Product Summary

Platforms
ADEOS-I
Instruments
OCTS
Spatial Extent

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

Geographic Region
GLOBAL OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1996-10-31 to 1997-06-30
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
C3300834819-OB_CLOUD
Data State
COMPLETE
Number of Files/Granules
5220
Processing Level
3
Published
Updated
Science Keywords
Reflectance ,
Absorption ,
Scattering ,
Gelbstoff ,
Phytoplankton

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

NASA Ocean Biology Processing Group. (2024). ADEOS-I OCTS Level-3 Global Mapped Inherent Optical Properties (IOP) Data, version 2022.0 [Data set]. NASA Ocean Biology Distributed Active Archive Center. https://doi.org/10.5067/ADEOS-I/OCTS/L3M/IOP/2022.0 Date Accessed: 2025-12-14

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
adg_443 Absorption due to gelbstoff and detrital material at 443 nm, GIOP model m^-1 int16 -32767 -30000 to 25000 9.9999997473788E-5
adg_s detrital and gelbstoff absorption spectral parameter for GIOP model m^-1 nm^-1 float32 -32767 0 to 5 N/A
adg_unc_443 Uncertainty in absorption due to gelbstoff and detrital material at 443 nm, GIOP model m^-1 int16 -32767 -24998 to 25000 9.9999997473788E-5
aph_443 Absorption due to phytoplankton at 443 nm, GIOP model m^-1 int16 -32767 -24998 to 25000 9.9999997473788E-5
aph_unc_443 Uncertainty in absorption due to phytoplankton at 443 nm, GIOP model m^-1 int16 -32767 -24998 to 25000 9.9999997473788E-5
a_412 Total absorption at 412 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
a_443 Total absorption at 443 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
a_490 Total absorption at 490 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
a_516 Total absorption at 516 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
a_565 Total absorption at 565 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
a_667 Total absorption at 667 nm, GIOP model m^-1 int16 -32767 -24998 to 32000 9.9999997473788E-5
bbp_443 Particulate backscattering at 443 nm, GIOP model m^-1 int16 -32767 -27999 to 1999 4.9999998736894E-6
bbp_s backscattering spectral parameter for GIOP model m^-1 nm^-1 float32 -32767 -3 to 3 N/A
bbp_unc_443 Uncertainty in particulate backscatter at 443 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_412 Total backscattering at 412 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_443 Total backscattering at 443 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_490 Total backscattering at 490 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_516 Total backscattering at 516 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_565 Total backscattering at 565 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
bb_667 Total backscattering at 667 nm, GIOP model m^-1 int16 -32767 -27999 to 31999 4.9999998736894E-6
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
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