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MODIS/Terra Leaf Area Index/FPAR 8-Day L4 Global 1km SIN Grid V005
Entry ID: MOD15A2


Summary
Abstract: The level-4 MODIS global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) product is composited every 8 days at 1-kilometer resolution on a Sinusoidal grid. Science Data Sets provided in the MOD15A2 include LAI, FPAR, a quality rating, and standard deviation for each variable.

The LAI variable defines the number of equivalent layers of leaves relative to a unit of ground area, whereas FPAR measures the proportion of available radiation in the photosynthetically active wavelengths that are absorbed by a canopy. Both variables are used as satellite-derived parameters for calculating surface photosynthesis, evapotranspiration, and net primary production, which in turn are used to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation.

Version-5 MODIS/Terra LAI products are Validated Stage 2, accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts. Version-5 MODIS/Terra FPAR products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts.

V005 Data Set Characteristics:
Area: ~10 x 10 km
Size: 1200 x 1200 rows/columns
File Size: ~0.2 MB compressed
Resolution: 1000 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Bands: 6


Purpose: Science Research

Related URL
Link: View Related Information


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Description: Data set landing page at the LP DAAC


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


Link: View Related Information
Description: LP 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 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: View Related Information
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: View Related Information
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 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: 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.


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

Data Set Citation
Version: 005


Temporal Coverage
Start Date: 1999-12-18


Science Keywords
BIOSPHERE >VEGETATION >LEAF CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >PHOTOSYNTHETICALLY ACTIVE RADIATION    [Definition]


ISO Topic Category
BIOTA


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: 2005-01-11
Last DIF Revision Date: 2016-01-27



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