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Description

The MYD17A3H Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the MYD17A3HGF Version 6.1 data product.

The MYD17A3H 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).

Knonw Issues

  • For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.
  • Forward processing of Aqua MODIS Net Primary Production Yearly L4 Global 500 m SIN Grid products was discontinued on January 3, 2004, due to unexpected errors in the input data. Users are encouraged to use the MYD17A3HGF Version 6.1 data product.

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) 8-day composite at 500 m resolution.

Version Description

The MYD17A3H Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the MYD17A3HGF Version 6.1 data product (https://doi.org/10.5067/MODIS/MYD17A3HGF.061).

Product Summary

Platforms
Aqua
Instruments
MODIS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
500 Meters x 500 Meters
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2002-12-27 to 2004-01-03
Temporal Resolution
1 Year
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC)
MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/MODAPS)
Concept ID
C2763370687-LPCLOUD
Data State
DEPRECATED
Processing Level
4
Published
Updated
Science Keywords
Photosynthesis,
Primary Production

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Running, S., Mu, Q., & Zhao, M. (2015). MYD17A3H MODIS/Aqua Net Primary Production Yearly L4 Global 500m SIN Grid V006 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MYD17A3H.006 Date Accessed: 2025-11-01

File Naming Convention

MYD17A3H.A2002001.h13v14.006.2015153211323.hdf

The file name begins with the Product Short Name (MYD17A3H) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2002001), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h13v14), the Version of the data collection (006), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2015153211323), and the Data Format (hdf).

Documents

Publications Citing This Dataset

Filters
Title Year Author
Sensitivity of primary production to precipitation across the United States Maurer, G. E.
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Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
Npp_500m Net Primary Productivity kg C/m² int16 32767 32767 to 32700 0.0001
Npp_QC_500m Quality Control Bits Bit Field uint8 255 255 to 254 N/A
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