MODIS/Aqua Net Primary Production Gap-Filled Yearly L4 Global 500m SIN Grid V006

Description

The MYD17A3HGF Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the [MYD17A3HGF Version 6.1](https://doi.org/10.5067/MODIS/MYD17A3HGF.061) data product.The MYD17A3HGF Version 6 product provides information about annual Net Primary Production (NPP) at 500 meter (m) pixel resolution. Annual NPP is derived from the sum of all 8-day Net Photosynthesis (PSN) products (MYD17A2H) from the given year. The PSN value is the difference of the Gross Primary Productivity (GPP) and the Maintenance Respiration (MR).The MYD17A3HGF will be generated at the end of each year when the entire yearly 8-day [MYD15A2H](https://doi.org/10.5067/modis/myd15a2h.006) is available. Hence, the gap-filled MYD17A3HGF is the improved MYD17, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of Photosynthetically Active Radiation (FPAR/LAI) based on the Quality Control (QC) label for every pixel. If any LAI/FPAR pixel did not meet the quality screening criteria, its value is determined through linear interpolation. However, users cannot get MYD17A3HGF in near-real time because it will be generated only at the end of a given year.Known Issues* Operational and uncertainty issues are provided under Section 2 in the User Guide.* For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=MODIS&sat=Aqua&as=6).Improvements/Changes from Previous Versions* The product uses updated Biome Property look-up tables (BPLUT) and an updated version of the daily Global Modeling and Assimilation Office (GMAO) meteorological data.* The products are now generated at the native resolution of 500 m using the Moderate Resolution Imaging Spectroradiometer (MODIS) Leaf Area Index(LAI)/Fraction of Photosynthetically Active Radiation (FPAR) ([MYD15A2H](https://doi.org/10.5067/modis/myd15a2h.006)) 8-day composite at 500 m resolution.

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2763370689-LPCLOUD
5 https://doi.org%2F10.5067%2FMODIS%2FMYD17A3HGF.006
5 https://lpdaac.usgs.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F495%2FMOD17_User_Guide_V6.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F95%2FMOD17_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov%2Ffilespec%2FMODIS%2F6%2FMYD17A3HGF
5 https://e4ftl01.cr.usgs.gov%2FWORKING%2FBRWS%2FBrowse.001%2F2020.01.02%2FBROWSE.MYD17A3HGF.A2008001.h09v07.006.2020002122940.1.jpg%3F_ga%3D2.258847114.1452435467.1577973160-2066674673.1574795892
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
21 MYD17A3HGF.006 https://doi.org/10.5067/MODIS/MYD17A3HGF.006
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MYD17A3HGF
5 https://landweb.modaps.eosdis.nasa.gov/
33 MOD17_User_Guide_V6.pdf https://lpdaac.usgs.gov/documents/495/MOD17_User_Guide_V6.pdf
33 MOD17_ATBD.pdf https://lpdaac.usgs.gov/documents/95/MOD17_ATBD.pdf

Tags

  • earth-science-ecological-dynamics-biosphere-ecosystem-functions-primary-production
  • earth-science-ecological-dynamics-biosphere-ecosystem-functions-photosynthesis

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