MODIS/Terra+Aqua Leaf Area Index/FPAR 4-Day L4 Global 500m SIN Grid V061

Description

The MCD15A3H Version 6.1 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), and Leaf Area Index (LAI) product is a 4-day composite data set with 500 meter pixel size. The algorithm chooses the best pixel available from all the acquisitions of both MODIS sensors located on NASA’s Terra and Aqua satellites from within the 4-day period. LAI is defined as the one-sided green leaf area per unit ground area in broadleaf canopies and as one-half the total needle surface area per unit ground area in coniferous canopies. FPAR is defined as the fraction of incident photosynthetically active radiation (400-700 nm) absorbed by the green elements of a vegetation canopy. The LAI product has attained stage 2 (https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=maturity) validation and the FPAR product has attained stage 1 (https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=maturity) validation. Improvements/Changes from Previous Versions * The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017. * A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Resources

Name Format Description Link
21 The LP DAAC product page provides information on Science Data Set layers and links for user guides, ATBDs, data access, tools, customer support, etc. https://doi.org/10.5067/MODIS/MCD15A3H.061
21 The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products. https://lpdaac.usgs.gov/
33 The technical information in the User's Guide enables users to interpret and use the data products. https://lpdaac.usgs.gov/documents/926/MOD15_User_Guide_V61.pdf
21 The File Specification provides a description of the product file including Scientific Data Sets and their attributes. https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MCD15A3H
21 Further details regarding MODIS land product validation for the LAI/FPAR data products are available from the MODIS land team validation site. https://modis-land.gsfc.nasa.gov/ValStatus.php?ProductID=MOD15
21 LP DAAC Data Pool provides direct access to available products via HTTPS. https://e4ftl01.cr.usgs.gov/MOTA/MCD15A3H.061/
21 Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. https://search.earthdata.nasa.gov/search?q=C2343110937-LPCLOUD
22 Browse image for Earthdata Search https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/MCD15A3H.061/MCD15A3H.A2022281.h19v04.061.2022287191333/BROWSE.MCD15A3H.A2022281.h19v04.061.2022287191333.1.jpg
21 The Application for Extracting and Exploring Analysis Ready Samples (AρρEEARS) offers a simple and efficient way to perform data access and transformation processes. https://appeears.earthdatacloud.nasa.gov/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FMODIS%2FMCD15A3H.061
33 The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. https://lpdaac.usgs.gov/documents/90/MOD15_ATBD.pdf
21 The LAI product has attained stage 2 validation and the FPAR product has attained stage 1 validation. https://modis-land.gsfc.nasa.gov/MODLAND_val.html
21 Access data via Open-source Project for a Network Data Access Protocol https://opendap.cr.usgs.gov/opendap/hyrax/DP131/MOTA/MCD15A3H.061/contents.html

Tags

  • biosphere
  • national-geospatial-data-asset
  • ngda
  • vegetation
  • earth-science

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