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MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 500m SIN Grid V051
Entry ID: MOD44B


Summary
Abstract: The Terra MODIS Vegetation Continuous Fields (VCF) product is a sub-pixel-level representation of surface vegetation cover estimates globally. Designed to continuously represent Earth’s terrestrial surface as a proportion of basic vegetation traits, it provides a gradation of three surface cover components: percent tree cover, percent non-tree cover, and percent bare. VCF products provide a continuous, quantitative portrayal of land surface cover with improved spatial detail, and hence, are widely used in environmental modeling and monitoring applications.

The first generation of the VCF algorithm involved a semi-automated process to generate regression trees with machine learning software. A human operator was required to evaluate the tree and decide if it needed more or less training data inputs. The V003 VCF product is the first version from that generation, and only contains the percent tree cover layer, as does the current V005. The Version 051 released in winter of 2015 contains all 3 surface cover components. Generated yearly, the VCF product is produced using monthly composites of Terra MODIS 250 and 500 meters Land Surface Reflectance data, including all seven bands, and Land Surface Temperature.

Several reasons help explain the inter-annual fluctuations in the percentage of tree cover from year to year, and therefore, users should exercise caution when considering performing inter-annual comparisons of VCF.

The VCF products are validated to stage-1; this means that their product accuracy was estimated through an assessment of the training data’s accuracy, and from limited in situ field validation datasets.

V051 Data Set Characteristics:
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 4800 x 4800 rows/columns
File Size: 28 MB
Resolution: 250 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Science Data Sets (SDS): 7


Purpose: Science Research

Related URL
Link: View Related Information


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Description: Data set landing page at the LP DAAC


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Description: Interface to search, discover, and access EOS data products, and invoke available data services.


Link: View Related Information
Description: TLP DAAC Data Pool provides direct access to all currently available MODIS products and the ability to download them via HTTP.


Link: View Related Information
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 Related Information
Description: various aspects of the land component of the MODIS mission.


Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Version: 051


Temporal Coverage
Start Date: 1999-12-18


Science Keywords
BIOSPHERE >VEGETATION >CANOPY CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >EVERGREEN VEGETATION    [Definition]
BIOSPHERE >VEGETATION >CROWN    [Definition]
BIOSPHERE >VEGETATION >DECIDUOUS VEGETATION    [Definition]
BIOSPHERE >VEGETATION >LEAF CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >VEGETATION COVER    [Definition]
LAND SURFACE >LAND USE/LAND COVER >LAND USE/LAND COVER CLASSIFICATION    [Definition]


ISO Topic Category
BIOTA
GEOSCIENTIFIC INFORMATION


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


Instrument
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]


Data Set Progress
IN WORK



Creation and Review Dates
DIF Creation Date: 2014-06-03
Last DIF Revision Date: 2016-01-27



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