Science Keywords>LAND SURFACE
MODIS/Terra Surface Reflectance Daily L2G Global 250m SIN Grid V004Entry ID: MOD09GQK4
Abstract: This product has been decommissioned.
This MODIS 250-meter surface reflectance two-band product is computed from MODIS level-1B land Bands 1 and 2 (centered at 648 anometers and 858 nanometers, respectively). The product is an estimate of the surface spectral reflectance for each Band as it would be measured at ground level if there were no atmospheric scattering or absorption. A correction ... scheme reducing the effects of atmospheric gases, aerosols, and thin cirrus clouds is applied to all non-cloudy pixels passing level-1B quality control. Data from Bands 3 through 7 (500-meter resolution) are not included in the MOD09GQK product.
This product is processed globally every day, using level-2 250-meter pointer files to place level-2 surface reflectance on a geographic grid. A given pixel may have more than one value, because every observation overlapping the tile being processed is used as input. All of the values are stored in a unique Science Data Set Lone Array, but only the first observed value is used in the surface reflectance science data sets. Quality assurance data for the MOD09GQK product are provided at different levels of detail including at the individual pixel level, at each Band and each resolution level, and at the level of the entire file.
V004 Data Set Characteristics (decommissioned):
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 4800 x 4800 rows/columns
File Size: ~680 MB
Resolution: ~250 meters
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 10
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Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center (LP DAAC)
Dataset Title: MODIS/Terra Surface Reflectance Daily L2G Global 250m SIN Grid V004
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological Survey
Version: V004Online Resource: https://lpdaac.usgs.gov
Start Date: 2003-01-01Stop Date: 2010-02-28
Latitude Resolution: 250 m
Longitude Resolution: 250 m
Horizontal Resolution Range: 250 meters - < 500 meters
Quality For more information on potential sensor-related anomalies, consult the following URL:
Access Constraints This product has been decommissioned.
Use Constraints None.
Data Set Progress
Role: TECHNICAL CONTACT
Phone: (Toll Free) (866) 573-3222
Phone: (605) 594-6116
Fax: (605) 594-6963
Email: LPDAAC at usgs.gov
LP DAAC User Services U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center 47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Moderate Resolution Imaging Spectroradiometer (MODIS) publications written by the MODIS Science
Team: [available online at http://modis.gsfc.nasa.gov/sci_team/pubs/]
National Aeronautics and Space Administration, 2000, MODIS data products catalog (EOS AM platform):
[Greenbelt, Maryland], Goddard Space Flight Center, http://modis.gsfc.nasa.gov/data/dataprod/index.php.
National Aeronautics and Space Administration, revised 2004, EOS Reference Handbook, a Guide to NASA's Earth
Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 261 p.
[available online in pdf format at
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-01-02
Last DIF Revision Date: 2014-01-14