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Description

The MOD09GQ Version 6.1 product provides an estimate of the surface spectral reflectance of Terra Moderate Resolution Imaging Spectroradiometer (MODIS) 250 meter (m) bands 1 and 2, corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Along with the 250 m surface reflectance bands are the Quality Assurance (QA) layer and five observation layers. This product is intended to be used in conjunction with the quality and viewing geometry information of the 500 m product (MOD09GA).

Known Issues

Improvements/Changes from Previous Versions

  • The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017.
  • A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Product Summary

Platforms
Terra
Instruments
MODIS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
250 Meters x 250 Meters
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2000-02-24 to Present
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
c2343115666-lpcloud
Data State
ACTIVE
Processing Level
2G
Published
Updated

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. (2021). MODIS/Terra Surface Reflectance Daily L2G Global 250m SIN Grid V061 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD09GQ.061 Date Accessed: 2025-08-30

Documents

USER'S GUIDE

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

PRODUCT QUALITY ASSESSMENT

SCIENCE DATA PRODUCT VALIDATION

GENERAL DOCUMENTATION

Learning Resources

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Publications Citing This Dataset

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Title Year Author
Using long temporal reference units to assess the spatial accuracy of global satellite-derived burned area products Franquesa, M.
Regional index insurance using satellite-based fractional flooded area Tellman, B.
Temporal variability of surface reflectance supersedes spatial resolution in defining Greenland’s bare-ice albedo Irvine-Fynn, T. D. L.
Interannual variability of spring fire in southern Nepal Hamal, K.
Remote estimates of total suspended matter in China's main estuaries using Landsat images and a weight random forest model Wang, X.
A gaussian kernel-based spatiotemporal fusion model for agricultural remote sensing monitoring Shen, Y. L.
Remote sensing of lake ice phenology in Alaska Zhang, S.
An automatic method to detect lake ice phenology using MODIS daily temperature imagery Zhang, X.
Soil moisture estimation using triangular method at higher resolution from MODIS products Rawat, K. S.
Salt marsh light use efficiency is driven by environmental gradients and species-specific physiology and morphology Hawman, P. A.
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