MOD44A_004

MODIS/Terra Vegetation Cover Conversion 96-Day L3 Global 250m SIN Grid V004

Version 004
  • Abstract
    The MOD44A.004 dataset was decommissioned as of October 23, 2017. Users are encouraged to use Version 6 of MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 250m SIN Grid (https://doi.org/10.5067/modis/mod44b.006). The MODIS/Terra Vegetation Cover Conversion 96-Day L3 Global 250m SIN Grid (MOD44A3) product is created from the results of the Vegetative Cover Conversion (VCC). The Vegetative Cover Conversion is produced on a quarterly basis by comparing data from the 3 months of the current year to the same 3 months of the previous year. The input for VCC is the MOD44C composite product. This composite is created from 16 days of daily data by performing a quality based per pixel method, which selects the most cloud free and highest spatial resolution data. Each of these composites is processed separately where the change is detected by comparison of the images. In this version, the change being reported is from closed canopy forest cover to non-forest area for the humid tropical regions of the globe, which includes the area from 30 degees North latitude to 30 degrees South latitude. In future versions change will be reported for open canopy forest to non-forest area and for flooding on a global scale. Forest cover is defined by using the Vegetation Continuous Fields product (MOD44B) where anything with 60% tree cover or more is classified as forest. This is consistent with the IGBP classification of a forest. A non-forest area is defined as an area with less than 40% tree cover. Any pixel that was identified as forest in year 1 and was then identified as non-forest in year 2 is flagged and recorded in one of the metrics layers. When all of the 16-day periods have been processed the metrics layers are compared. Any pixel that has been flagged in at least two of the metrics layers is recorded in the "labeled land cover change" layer. Categorical quality assurance, determined by the quality of the input data, is provided in the "labeled land cover change QA" layer. For specific information regarding values refer to the product user guide. V004 Data Set Characteristics: Area: ~10 degrees x 10 degrees lat/long Image Dimensions: 2(4800 x 4800 rows/columns) Average File Size: ~600 MB Resolution: 250 meters Projection: Sinusoidal Data Format: HDF-EOS Science Data Sets (SDS): 5
  • Purpose
    Science Research
  • Version Description
    Version 4 Processing

Data Identification Fields:

Toggle Data Identification Fields
    Data Dates
    Creation
    Last Revision
    Processing Level

    3

    Sensor Measurements

    Quality
    Collection Progress

    Complete

    Access Constraints

    None

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • BIOSPHERE
    • VEGETATION
    • VEGETATION COVER
    • EARTH SCIENCE
    • BIOSPHERE
    • VEGETATION
    • AFFORESTATION/REFORESTATION
    • EARTH SCIENCE
    • HUMAN DIMENSIONS
    • HABITAT CONVERSION/FRAGMENTATION
    • DEFORESTATION
    • EARTH SCIENCE
    • HUMAN DIMENSIONS
    • HABITAT CONVERSION/FRAGMENTATION
    • URBANIZATION/URBAN SPRAWL
    • EARTH SCIENCE
    • HUMAN DIMENSIONS
    • ENVIRONMENTAL IMPACTS
    • AGRICULTURAL EXPANSION
    • EARTH SCIENCE
    • HUMAN DIMENSIONS
    • NATURAL HAZARDS
    • WILDFIRES
    • EARTH SCIENCE
    • TERRESTRIAL HYDROSPHERE
    • SURFACE WATER
    • FLOODS

Acquisition Information Fields:

Toggle Acquisition Information Fields
Platforms
  • Earth Observation Satellites
    TERRA
    Instruments
    • MODIS

Temporal Information Fields:

Toggle Temporal Information Fields

Spatial Information Fields:

Toggle Spatial Information Fields
    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL Universal Transverse Mercator (UTM) CARTESIAN GEODETIC
    Tiling Identification Systems
    System Name Coordinate 1 Min Coordinate 1 Max Coordinate 2 Min Coordinate 2 Max
    MODIS Tile SIN 0.0 35.0 0.0 17.0
Location Keywords

Data Centers

Toggle Data Centers
  • NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS
    PROCESSOR
    MODIS Adaptive Processing System, Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

    Greenbelt, Maryland

    This data center does not have any contact mechanisms listed.

  • LP DAAC
    ARCHIVER
    Land Processes Distributed Active Archive Center

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 605-594-6963
    • Email
    Contact Details

    None

Data Contacts

Toggle Data Contacts

There are no listed data contacts for this collection.

Collection Citations Fields:

Toggle Collection Citations Fields