[Personnel: Last_Name='MODAPS OPERATION TEAM']
MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V005Entry ID: MYD09GQK5
Abstract: The MODIS 250-meter Surface Reflectance product (MYD09GQK) is a
two-band product computed from MODIS level-1B land bands 1 and 2
(centered at 648 nanometers and 858 nanometers, respectively). The
product is an estimate of the surface spectral reflectance for each
band as it would measure 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.
The MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid
product produces a false-color image derived from the 250m data in
Bands 1 and 2. Data from Bands 3 through 7 (500m resolution) are not
included in this product. MYD09GQK is processed globally every day
using Level-2G 250m Pointer Files (MYDPTQKM) to place Level-2 Surface
Reflectance (MYD09) on a geographic grid. Quality assurance data for
the MYD09GQK product is provided at three different levels: pixel,
band, and for whole file.
Data Set Characteristics:
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 4800 x 4800 rows/columns
File Size: 196 MB
Resolution: 250 meters
Data Format: HDF-EOS
Science Data Sets (SDSs): 5
MODIS/Aqua Version-5 products are validated, meaning that product
uncertainties are well defined over a range of representative
conditions. Although there may be later improved versions, these data
are ready for use in scientific publications.
Data Set Citation
Dataset Originator/Creator: MODAPS
Dataset Title: MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V005
Dataset Publisher: NASA
Data Presentation Form: Remote Sensing ImageOnline Resource: http://lance.nasa.gov/
Latitude Resolution: 250 m
Longitude Resolution: 250 m
Horizontal Resolution Range: 250 meters - < 500 meters
Quality Sensor anomalies may be present.
Access Constraints None.
Use Constraints None.
Data Set Progress
Role: TECHNICAL CONTACT
Phone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Email: opsdist at sigmaspace.com
National Aeronautics and Space Administration, 2000, MODIS data
products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard
Space Flight Center, http://modis.gsfc.nasa.gov.
National Aeronautics and Space Administration, 1999, 1999 EOS
reference handbook, a guide to NASA's Earth Science Enterprise and the
Earth Observing System: Greenbelt, Maryland, Goddard Space Flight
Center, 361 p. [available online in pdf format at
Creation and Review Dates
DIF Creation Date: 2010-10-06
Last DIF Revision Date: 2011-05-11