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Description

The MOD09Q1 Version 6.1 product provides an estimate of the surface spectral reflectance of Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Bands 1 and 2, corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Provided along with the 250 meter (m) surface reflectance bands are two quality layers. For each pixel, a value is selected from all the acquisitions within the 8-day composite period. The criteria for the pixel choice include cloud and solar zenith. When several acquisitions meet the criteria the pixel with the minimum channel 3 (blue) value is used.

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
Spatial Extent

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

Spatial Resolution
250 Meters x 250 Meters
Spatial Reference System(s)
MODIS Sinusoidal Tiling System
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2000-02-18 to Present
Temporal Resolution
8 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
C2343112831-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
377494
Processing Level
3
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. (2021). MODIS/Terra Surface Reflectance 8-Day L3 Global 250m SIN Grid V061 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD09Q1.061 Date Accessed: 2026-05-14

File Naming Convention

MOD09Q1.A2025209.h35v10.061.2025218035627.hdf

The file name begins with the Product Short Name (MOD09Q1) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025209), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h35v10), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025218035627), 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
Diverse migratory portfolios drive inter-annual switching behavior of Zuckerman, Gabriel R., Barker, Kristin J., Gigliotti, Laura C., Cole, Eric K., Gude, Justin A., Hurley, Mark A., Kauffman, Matthew J., Lutz, Daryl, MacNulty, Daniel R., Maichak, Eric J., McWhirter, Doug, Mong, Tony W., Proffitt, Kelly, Scurlock, Brandon M., Stahler, Daniel R., Wise, Ben, Middleton, Arthur D. Reflectance
Contrasting photoprotective responses of forest trees revealed using PRI Gamon, John A., Wang, Ran, Russo, Sabrina E. Reflectance
Nitrogen nutrient supply and greenhouse gas mitigation potentials from cover crops across Chinese croplands Wang, Yicheng, Tao, Fulu Reflectance
Modification of Statistical Metric Biases in Large-Region and Long-Time-Series Landsat Dataset Due to Insufficient Observations Wang, Li, Zhang, Yangjian, Song, Wanjuan, Zhou, Quan, Li, Wang, Huang, Ni, Xu, Shiguang, Niu, Zheng Reflectance
Yield Estimation of Wheat Using Cropland Masks from European Common Agrarian Policy: Comparing the Performance of EVI2, NDVI, and MTCI in Spanish ... Garcia-Perez, M. A., Rodriguez-Galiano, V., Sanchez-Rodriguez, E., Egea-Cobrero, V. Reflectance
Satellite forecasting of crop harvest can trigger a cross-hemispheric production response and improve global food security Tanaka, Tetsuji, Sun, Laixiang, Becker-Reshef, Inbal, Song, Xiao-Peng, Puricelli, Estefania Reflectance
Response of greater sage-grouse to sagebrush reduction treatments in Smith, Kurt T., Levan, Jason R., Chalfoun, Anna D., Christiansen, Thomas J., Harter, Stanley R., Oberlie, Sue, Beck, Jeffrey L. Reflectance
Trends of greening and browning in terrestrial vegetation in China from 2000 to 2020 Yi, Kunpeng, Zhao, Xueming, Zheng, Zhaoju, Zhao, Dan, Zeng, Yuan Reflectance
Temperature and microclimate refugia use influence migratory timings of a threatened grassland bird Ramos, Rita F., Franco, Aldina M.A., Gilroy, James J., Silva, Joao P. Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Reflectance
Toward 30 m Fine-Resolution Land Surface Phenology Mapping at a Large Ruan, Yongjian, Ruan, Baozhen, Zhang, Xinchang, Ao, Zurui, Xin, Qinchuan, Sun, Ying, Jing, Fengrui Reflectance, Plant Phenology, Enhanced Vegetation Index (EVI), Plant Characteristics, Vegetation Cover, Vegetation Index, Nitrogen, Atmospheric Carbon Dioxide, Tree Rings, Forests, Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Carbon
A continuous change tracker model for remote sensing time series reconstruction Zhang, Yangjian, Wang, Li, He, Yuanhuizi, Huang, Ni, Li, Wang, Xu, Shiguang, Zhou, Quan, Song, Wanjuan, Duan, Wensheng, Wang, Xiaoyue, Muhammad, Shakir, Nath, Biswajit, Zhu, Luying, Tang, Feng, Du, Huilin, Wang, Lei, Niu, Zheng Land Surface Temperature, Emissivity, Land Use/Land Cover Classification, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Photosynthesis, Primary Production, Vegetation Productivity, Reflectance
A 250 m resolution global leaf area index product derived from MODIS surface reflectance data Xiao, Zhiqiang, Song, Jinling, Yang, Hua, Sun, Rui, Li, Juan Reflectance, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar)
Assessing the inundation dynamics and its impacts on habitat suitability in Poyang Lake based on integrating Landsat and MODIS observations Mu, Shaojie, Yang, Guishan, Xu, Xibao, Wan, Rongrong, Li, Bing Reflectance
HydroSat: geometric quantities of the global water cycle from geodetic satellites Tourian, Mohammad J., Elmi, Omid, Shafaghi, Yasin, Behnia, Sajedeh, Saemian, Peyman, Schlesinger, Ron, Sneeuw, Nico Reflectance, RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM)
Identifying management-driven dynamics in vegetation cover: Applying the Donohue, Randall J., Mokany, Karel, McVicar, Tim R., O'Grady, Anthony P. Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Reflectance
Improved identification of cotton cultivated areas by applying instance-based transfer learning on the time series of MODIS NDVI Xun, Lan, Zhang, Jiahua, Yao, Fengmei, Cao, Dan Land Use/Land Cover Classification, Reflectance
Development of the GLASS 250-m leaf area index product (version 6) from MODIS data using the bidirectional LSTM deep learning model Ma, Han, Liang, Shunlin Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Land Use/Land Cover Classification, Reflectance
Development of a new index for automated mapping of ratoon rice areas using time-series normalized difference vegetation index imagery LI, Bolun, PENG, Shaobing, SHEN, Runping, YANG, Zong-Liang, YAN, Xiaoyuan, LI, Xiaofeng, LI, Rongrong, LI, Chengye, ZHANG, Guangbin Land Use/Land Cover Classification, Reflectance, RADAR IMAGERY, Terrain Elevation, Digital Elevation/Terrain Model (DEM)
Development of a simplified technique for gap filling of Normalize Difference Vegetation Index (NDVI) time series data Faisal, M., Makar, R. S. Reflectance
Energy and physiological tolerance explain multitrophic soil diversity in temperate mountains CalderonSanou, Irene, Zinger, Lucie, Hedde, Mickael, MartinezAlmoyna, Camille, Saillard, Amelie, Renaud, Julien, Gielly, Ludovic, Khedim, Norine, Lionnet, Clement, Ohlmann, Marc, Consortium, Orchamp, Munkemuller, Tamara, Thuiller, Wilfried Reflectance
Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate Gelybo, Gy., Barcza, Z., Dencso, M., Potyo, I., Kasa, I., Horel, A., Pokovai, K., Birkas, M., Kern, A., Hollos, R., Toth, E. Reflectance
Daily spatial complete soil moisture mapping over southeast China using CYGNSS and MODIS data Yang, Ting, Sun, Zhigang, Wang, Jundong, Li, Sen Land Surface Temperature, Emissivity, Reflectance, Albedo, Anisotropy
Potential microbial enzyme activity in seasonal snowpack is high and Hoffman, Abigail S., van Diepen, Linda T. A., Albeke, Shannon E., Williams, David G. Reflectance
Monitoring and Predicting Temporal Changes of Urmia Lake and its Basin Using Satellite Multi-Sensor Data and Deep-Learning Algorithms Radman, Ali, Akhoondzadeh, Mehdi, Hosseiny, Benyamin Total Surface Precipitation Rate, Reflectance
Vorhersage von hydrologischen Abflusskennwerten in unbeobachteten Einzugsgebieten mit Machine Learning Klingler, Christoph, Feigl, Moritz, Borgwardt, Florian, Seliger, Carina, Schmutz, Stefan, Herrnegger, Mathew Land Use/Land Cover Classification, Reflectance, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Stratigraphic Sequence, Digital Elevation/Terrain Model (DEM), Soil Depth, Sediments
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