MODIS/Aqua Surface Reflectance 8-Day L3 Global 500m SIN Grid
Entry ID: MYD09A1

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Summary
Abstract: The MODIS Surface Reflectance products provide an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption. Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 products.

MYD09A1 provides Bands 1–7 at 500-meter resolution in an 8-day gridded level-3 product in the Sinusoidal projection. Each MYD09A1 pixel contains the best possible L2G observation during an 8-day period as selected on the basis of high observation coverage, low view angle, the absence of clouds or cloud shadow, and aerosol loading. Science Data Sets provided for this product include reflectance values for Bands 1–7, quality assessment, and the day of the year for the pixel along with solar, view, and zenith angles.

V005 Data Set Characteristics:
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 2400 x 2400 rows/columns
File Size: ~64 MB
Resolution: 500 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 13

V004 Data Set Characteristics (decommissioned):
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 2400 x 2400 rows/columns
File Size: ~161 MB
Resolution: 500 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 13

V003 Data Set Characteristics (decommissioned):
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 2400 x 2400 rows/columns
File Size: ~161 MB
Resolution: 500 meters
Projection: Integerized Sinusoidal
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 13

Related URL
Link: GET DATA > REVERB
Description: Interface to search, discover, and access EOS data products, and invoke available data services.


Link: GET DATA > ON-LINE ARCHIVE
Description: LP DAAC Data Pool provides direct access to all currently available MODIS products and the ability to download them via HTTP.


Link: GET DATA
Description: The MODIS Reprojection Tool on the Web (MRTWeb) is available for selected MODIS land products. MRTWeb’s capabilities include reprojecting to alternate map projections, spatial and spectral subsetting, resampling, and alternate output format options.


Link: GET DATA
Description: USGS EarthExplorer (EE) provides users the ability to query, search and order archived ASTER and MODIS products available from the LP DAAC. Registered users of EE have access to additional features than guest users.


Link: GET DATA
Description: The USGS Global Visualization Viewer (GloVis) is an online search and order tool driven by browse images. Users may select any geographical area of interest (for any given product) and view all available browse images for that area before deciding to order those products.


Link: VIEW PROJECT HOME PAGE
Description: The Land Processes Distributed Active Archive Center (LP DAAC) is one of several discipline-specific data centers within the NASA Earth Observing System Data and Information System (EOSDIS). The LP DAAC Web page provides information about available data products, services, documentation, order interfaces, and tools.


Link: VIEW PROJECT HOME PAGE
Description: The MODIS Land home page is maintained through NASA's Goddard Space Flight Center and documents various aspects of the land component of the MODIS mission.


Link: VIEW RELATED INFORMATION
Description: Detailed product descriptions and additional information including links for data access, user guides, and customer support, etc.


Geographic Coverage
 N: 80.0 S: -80.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center (LP DAAC)
Dataset Title: MODIS/Aqua Surface Reflectance 8-Day L3 Global 500m SIN Grid
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological Survey
Version: V003 - V005
Online Resource: https://lpdaac.usgs.gov/


Temporal Coverage
Start Date: 2002-05-04


Location Keywords
GEOGRAPHIC REGION > GLOBAL


Data Resolution
Latitude Resolution: 500 meters
Longitude Resolution: 500 meters


Science Keywords
LAND SURFACE >SURFACE RADIATIVE PROPERTIES >REFLECTANCE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION


Platform
TERRA >Earth Observing System, TERRA (AM-1)    [Information]


Instrument
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]


Project
CWIC >CEOS WGISS Integrated Catalog    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]


Quality
For more information on potential sensor-related anomalies, consult the following URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=...


Access Constraints
None


Use Constraints
None


Keywords
IMAGERY
DAAC
LP DAAC
EOSDIS
USGS/EROS
ESIP
USGS
LPDAAC


Data Set Progress
IN WORK


Originating Center
USGS/EROS


Data Center
Land Processes Distributed Active Archive Center    [Information]
Data Center URL: https://lpdaac.usgs.gov/
Dataset ID: MYD09A1

Data Center Personnel
Name: LP DAAC USER SERVICES
Phone: (Toll Free) (866) 573-3222
Phone: (605) 594-6116
Fax: (605) 594-6963
Email: LPDAAC at usgs.gov
Contact Address:
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
Country: USA



Distribution
Distribution_Media: HTTP
Distribution_Size: ~64 MB (V005)
Distribution_Format: HDF-EOS


Personnel
LP DAAC USER SERVICES
Role: TECHNICAL CONTACT
Phone: (Toll Free) (866) 573-3222
Phone: (605) 594-6116
Fax: (605) 594-6963
Email: LPDAAC at usgs.gov
Contact Address:
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
Country: USA


Publications/References
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, 2000, EOS reference handbook, a guide to NASA's Earth Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 256 p. [available online in pdf format at http://eospso.gsfc.nasa.gov/ftp_docs/data_products_vol2.pdf].

Creation and Review Dates
DIF Creation Date: 2007-03-24
Last DIF Revision Date: 2013-06-12

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