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Description

The MODOCGA Version 6 data product was decommissioned on July 31, 2023.

The MODOCGA Version 6 Level 2 Gridded Lite (L2G-lite) Ocean Reflectance product provides an estimate of the surface spectral reflectance data from Terra Moderate Resolution Imaging Spectroradiometer (MODIS) bands 8 through 16. Data have been corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. MODOCGA is a daily land product with a pixel size of 1 kilometer (km). The product is referred to as ocean reflectance because bands 8 through 16 are used primarily to produce ocean products. The MODOCGA, as with other L2G data sets, stores the “best available pixel” from all the qualifying observations in the first layer and any subsequent observations are stored in either a full or compact format layer within the Hierarchical Data Format (HDF) file.

Known Issues

Improvements/Changes from Previous Versions

  • New product for MODIS Version 6.

Product Summary

Platforms
Terra
Instruments
MODIS
Spatial Extent

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

Spatial Resolution
1000 Meters x 1000 Meters
Spatial Reference System(s)
MODIS Sinusoidal Tiling System
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2000-02-24 to 2023-02-17
Temporal Resolution
1 Day
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC) ,
MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/MODAPS)
Concept ID
C2763298121-LPCLOUD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
2G
Published
Updated
Science Keywords
Reflectance ,
Reflectance

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

Vermote, E., & Wolfe, R. (2015). MODOCGA MODIS/Terra Ocean Reflectance Daily L2G-Lite Global 1km SIN Grid V006 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MODOCGA.006 Date Accessed: 2026-02-13

File Naming Convention

MODOCGA.A2002281.h33v11.006.2015151071841.hdf

The file name begins with the Product Short Name (MODOCGA) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2002281), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h33v11), the Version of the data collection (006), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2015151071841), and the Data Format (hdf).

Documents

Publications Citing This Dataset

Filters
Title Year Author
The increasing water clarity of Tibetan lakes over last 20 years according to MODIS data Liu, C.
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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 Description Units Data Type Fill Value Valid Range Scale Factor
granule_pnt_1 Granule Pointer N/A uint8 255 0 to 254 N/A
num_observations Number of observations per pixel N/A int8 -1 0 to 127 N/A
orbit_pnt_1 Orbit Pointer N/A int8 -1 0 to 15 N/A
QC_b8_15_1km_1 Band Quality Bands 8-15 Bit Field uint32 787410671 0 to 4294966019 N/A
QC_b16_1km_1 Band Quality Band 16 Bit Field uint8 3 0 to 255 N/A
sur_refl_b08_1 Surface Reflectance Band 8 (405-420 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b09_1 Surface Reflectance Band 9 (438-448 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b10_1 Surface Reflectance Band 10 (483-493 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b11_1 Surface Reflectance Band 11 (526-536 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b12_1 Surface Reflectance Band 12 (546-556 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b13_1 Surface Reflectance Band 13 (662-672 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b14_1 Surface Reflectance Band 14 (673-683 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b15_1 Surface Reflectance Band 15 (743-753 nm) N/A int16 -28672 -100 to 16000 0.0001
sur_refl_b16_1 Surface Reflectance Band 16 (862-877 nm) N/A int16 -28672 -100 to 16000 0.0001
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