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Description

The MOD09GA Version 6.1 product provides an estimate of the surface spectral reflectance of Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Bands 1 through 7, corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Provided along with the 500 meter (m) surface reflectance, observation, and quality bands are a set of ten 1 kilometer (km) observation bands and geolocation flags. The reflectance layers from the MOD09GA are used as the source data for many of the MODIS land products.

Known Issues

Version Description

The following changes and improvements were implemented for inputs to MODIS Version 6.1 surface reflectance data products: (1) 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, and (2) A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Product Summary

Platforms
Terra
Instruments
MODIS
Projects
TERRA
Spatial Extent

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

Spatial Resolution
500 Meters x 500 Meters
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 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
C2202497474-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
3049843
Processing Level
2G
Published
Updated
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

Vermote, E., & Wolfe, R. (2021). MODIS/Terra Surface Reflectance Daily L2G Global 1km and 500m SIN Grid V061 [Dataset]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD09GA.061 Date Accessed: 2026-07-14

File Naming Convention

MOD09GA.A2025219.h05v10.061.2025221031815.hdf

The file name begins with the Product Short Name (MOD09GA) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025219), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h05v10), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025221031815), and the Data Format (hdf).

Documents

USER'S GUIDE

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

PRODUCT QUALITY ASSESSMENT

SCIENCE DATA PRODUCT VALIDATION

GENERAL DOCUMENTATION

Publications Citing This Dataset

Filters
Title Year Author Topic
Assessing the thermodynamic variables of landscapes in the southwest part of East European plain in Russia using the MODIS multispectral band measurements Puzachenko, Y.G., Sandlersky, R.B., Krenke, A.N., Olchev, A. Reflectance
Estimating high resolution evapotranspiration from disaggregated thermal images Bisquert, M., Sanchez, J.M., Lopez-Urrea, R., Caselles, V. Reflectance, Land Surface Temperature, Emissivity
Reconstruction of daily 30 m data from HJ CCD, GF-1 WFV, Landsat, and MODIS data for crop monitoring Wu, Mingquan, Zhang, Xiaoyang, Huang, Wenjiang, Niu, Zheng, Wang, Changyao, Li, Wang, Hao, Pengyu Reflectance
A spectral unmixing model for the integration of multi-sensor imagerya tool to generate consistent time series data Doxani, Georgia, Mitraka, Zina, Gascon, Ferran, Goryl, Philippe, Bojkov, Bojan Reflectance
Assessing the impacts of climate change and dams on floodplain inundation and wetland connectivity in the wetdry tropics of northern Australia Karim, Fazlul, Dutta, Dushmanta, Marvanek, Steve, Petheram, Cuan, Ticehurst, Catherine, Lerat, Julien, Kim, Shaun, Yang, Ang Reflectance
Balance of radiation by remote sensing over the hydrographic basin of northeastern mata zone LEIDJANE MARIA MACIEL DE, OLIVEIRA, SUZANA MARIA GICO LIMA, MONTENEGRO, BERNARDO BARBOSA DA, SILVA, ALBERT EINSTEIN SPINDOLA SARAIVA DE, MOURA Land Surface Temperature, Emissivity, Reflectance
Comparison of NDVIs from GOCI and MODIS data towards improved assessment of crop temporal dynamics in the case of paddy rice Yeom, Jong-Min, Kim, Hyun-Ok Reflectance
Evaluation of medium spatial resolution BRDF-adjustment techniques using multi-angular SPOT4 (Take5) acquisitions Claverie, Martin, Vermote, Eric, Franch, Belen, He, Tao, Hagolle, Olivier, Kadiri, Mohamed, Masek, Jeff Reflectance
Landsat TM/ETM+ and HJ-1A/B CCD data automatic relative radiometric normalization and accuracy verification HU, Changmiao, ZHANG, Wei, FENG, Zheng, TANG, Ping Reflectance
Performance analysis of MODIS 500-m spatial resolution products for estimating chlorophyll-a concentrations in oligo- to meso-trophic waters case study: Itumbiara reservoir, Brazil Ogashawara, Igor, Alcantara, Enner, Curtarelli, Marcelo, Adami, Marcos, Nascimento, Renata, Souza, Arley, Stech, Jose, Kampel, Milton Reflectance
Automatic and improved radiometric correction of landsat imageryusing reference values from MODIS surface reflectance images Pons, X., Pesquer, L., Cristobal, J., Gonzalez-Guerrero, O. Reflectance
Retrieval of leaf area index from MODIS surface reflectance by model inversion using different minimization criteria Leonenko, G., Los, S.O., North, P.R.J. Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Reflectance, Canopy Characteristics, Vegetation Index, Primary Production, Respiration Rate, Biomass
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