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Description

The MODIS Near Real Time (NRT) level-2G 1km surface reflectance data state QA product, MOD09GST, is a restructured version of its primary input, the state QA data in MOD09_L2. This product summarizes the quality of the MOD09 products, specifically atmospheric and other correction states. The product contains quality assurance data pertaining to cloud and cloud shadow, land and water designations, aerosols, and the data source of corrections performed on the file. The data set also contains the number of observations for each pixel.

Product Summary

Platforms
Terra
Instruments
MODIS
Spatial Extent

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

Spatial Resolution
1 Kilometers x 1 Kilometers
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2021-02-07 to Present
Data Partner
Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS) (NASA/GSFC/EOS/ESDIS/LANCE MODIS)
Concept ID
C2007659778-LANCEMODIS
Data State
ACTIVE
Processing Level
2G
Published
Science Keywords
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

MODIS Science Team. (2021). MODIS/Terra Surface Reflectance Quality Daily L2G Global 1km SIN Grid NRT [Data set]. NASA LANCE MODIS at the MODAPS. https://doi.org/10.5067/MODIS/MOD09GST.NRT.061 Date Accessed: 2026-04-18