[ISO_Topic_Category='CLIMATOLOGY/METEOROLOGY/ATMOSPHERE']
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MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 500m SIN Grid Entry ID: MOD44B |
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Summary
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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. 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. V005 Data Set Characteristics: Area: ~10 degrees x 10 degrees lat/long Image Dimensions: 4800 x 4800 rows/columns File Size: 14 MB Resolution: 250 meters Projection: Sinusoidal Data Format: HDF-EOS Science Data Sets (SDS): 4 V004 Data Set Characteristics: Area: ~10 degrees x 10 degrees lat/long Image Dimensions: 2400 x 2400 rows/columns File Size: ~1.3 MB Resolution: 500 meters Projection: Sinusoidal Data Format: HDF-EOS Science Data Sets (SDS): 1 V003 Data Set Characteristics: Area: ~10 degrees x 10 degrees lat/long Image Dimensions: 4800 x 4800 rows/columns File Size: 66 MB Resolution: 500 meters Projection: Integerized Sinusoidal Data Format: HDF-EOS Science Data Sets (SDS): 12 |
Related URL
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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: TLP 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 |
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Data Set Citation
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Dataset Originator/Creator:
Land Processes Distributed Active Archive Center (LP DAAC)
Dataset Title: MODIS/Terra 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, V004, V005 Online Resource: https://lpdaac.usgs.gov/ |
Temporal Coverage
| Start Date: 2000-03-05 |
Location Keywords
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GEOGRAPHIC REGION
> GLOBAL
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Data Resolution
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Latitude Resolution:
500 meters
Longitude Resolution: 500 meters |
Science Keywords
| 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 COVER [Definition] |
| LAND SURFACE >SURFACE RADIATIVE PROPERTIES >REFLECTANCE [Definition] |
| BIOSPHERE >VEGETATION >EVERGREEN VEGETATION [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION |
Platform
| TERRA >Earth Observing System, TERRA (AM-1) [Information] |
Instrument
| MODIS >Moderate-Resolution Imaging Spectroradiometer [Information] |
Project
| 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
| COMPLETE |
Originating Center
| USGS/EROS |
Data Center
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Land Processes Distributed Active Archive Center
[Information]
Data Center URL: https://lpdaac.usgs.gov/ Dataset ID: MOD44B
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Distribution
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Distribution_Media:
HTTP
Distribution_Size: 14 MB Distribution_Format: HDF-EOS |
Creation and Review Dates
DIF Creation Date:
2005-11-04
Last DIF Revision Date:
2005-11-04
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