[Location: Location_Category='GEOGRAPHIC REGION', Location_Type='GLOBAL']
MODIS/Terra+Aqua Land Cover Dynamics Yearly L3 Global 500 m SIN GridEntry ID: MCD12Q2
Abstract: Attention: The Dynamics_QC layer of the MCD12Q2 products is not performing as intended. Users are advised to ignore QC information until the issue is resolved.
The MODIS Land Cover Dynamics (MCD12Q2) product (informally called the MODIS Global Vegetation Phenology product) provides estimates of the timing of vegetation phenology at global scales. Additionally, it also provides information related ... to the range and summation of the enhanced vegetation index (EVI) computed from MODIS surface reflectance data at each pixel. It identifies the vegetation growth, maturity, and senescence that mark seasonal cycles. In contrast to the version 004 incarnation of this product (MOD12Q2), MCD12Q2 uses both Terra and Aqua MODIS input data. MCD12Q2 is produced once a year with 24 months of input data (i.e., the 12 months of interest data bracketed by six month’s data on either side).
MCD12Q2 primarily uses MODIS EVI, which is computed from the MODIS Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) product instead of the MOD09 surface reflectance product. In contrast to the version 004 product, MCD12Q2 uses NBAR values computed from an 8-day period at 500 m spatial resolution. Huete et al. (2002) provide the formula used to derive the EVI from the NBAR data. The snow and ice flag included in the MODIS NBAR product’s QA field is useful to filter out data points associated with snow-covered surfaces from the input time-series, especially because snow presence introduces large temporal variations in EVI that are not associated with vegetation phenology. Land surface temperature data inputs are derived from the MODIS MOD11A2 8-day composite products.
V005 Data Set Characteristics:
Image Dimensions: 2 x 2400 x 2400 (num_modes/rows/columns)
File Size: ~165 MB
Resolution: 500 meters
Data Format: HDF-EOS
Science Data Sets (HDF SDS Layers): 8
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Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center (LP DAAC)
Dataset Title: MODIS/Terra+Aqua Land Cover Dynamics Yearly L3 Global 500 m SIN Grid
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological SurveyOnline Resource: https://lpdaac.usgs.gov/
Start Date: 2001-01-01
Latitude Resolution: 500 m
Longitude Resolution: 500 m
Horizontal Resolution Range: 500 meters - < 1 km
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: ~165 MB
Distribution Format: HDF-EOS
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 http://eospso.gsfc.nasa.gov/ftp_docs/data_products_1.pdf].
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].
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2011-01-05
Last DIF Revision Date: 2013-01-31