MODIS/Aqua Vegetation Indices Monthly L3 Global 0.05Deg CMG V005Entry ID: MYD13C25
Abstract: Global MODIS vegetation indices are designed to provide consistent spatial and temporal comparisons of vegetation conditions. Blue, red, and near-infrared reflectances, centered at 470-nanometers, 648-nanometers, and 848-nanometers, respectively, are used to determine the MODIS daily vegetation indices.
The MODIS Normalized Difference Vegetation Index (NDVI) complements NOAA's Advanced Very High ... Resolution Radiometer (AVHRR) NDVI products and provides continuity for historical applications. The MODIS NDVI product contains atmospherically corrected bi-directional surface reflectances masked for water, clouds, and cloud shadows. Another MODIS index, the Enhanced Vegetation Index or EVI, uses the blue band to remove residual atmospheric contamination caused by smoke and sub-pixel thin cirrus clouds. The EVI also uses feedback adjustment to minimize canopy background variations and to enhance vegetation sensitivity from sparse to dense vegetation conditions.
Global MYD13C2 data are cloud-free spatial composites of the gridded 16-day 1-kilometer MYD13A2, and are provided monthly as a level-3 product projected on a 0.05 degree (5600-meter) geographic Climate Modeling Grid (CMG). Cloud-free global coverage is achieved by replacing clouds with the historical MODIS time series climatology record.
Vegetation indices are used for globally monitoring vegetation conditions and are used in products displaying land cover and land cover changes. These data may be used as input for modeling global biogeochemical and hydrologic processes and global and regional climate. These data also may be used for characterizing land surface biophysical properties, including land cover.
V005 Data Set Characteristics:
Image Dimensions: 3600 x 7200 rows/columns
File Size: ~100 MB
Resolution: 5600 meters (0.05 degree)
Projection: Lat/Long grid
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 13
Data Set Citation
Dataset Originator/Creator: LP DAAC
Dataset Title: MODIS/Aqua Vegetation Indices Monthly L3 Global 0.05Deg CMG V005
Dataset Publisher: LP DAAC
Start Date: 2002-07-01
Latitude Resolution: 0.05 degrees
Longitude Resolution: 0.05 degrees
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
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.
Data Set Progress
Distribution Media: HTTP
Distribution Size: ~100 MB
Distribution Format: HDF-EOS
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, 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/sites/default/files/publications/data_p...].
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-11-05
Last DIF Revision Date: 2015-06-05