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Description

The MOD17A3HGF Version 6.1 product provides information about annual Gross and Net Primary Production (GPP and NPP) at 500 meter (m) pixel resolution. Annual Terra Moderate Resolution Imaging Spectroradiometer (MODIS) GPP and NPP is derived from the sum of all 8-day GPP Net Photosynthesis (PSN) products (MOD17A2H) from the given year. The PSN value is the difference of the GPP and the Maintenance Respiration (MR).

The MOD17A3HGF will be generated at the end of each year when the entire yearly 8-day MOD15A2H is available. Hence, the gap-filled MOD17A3HGF is the improved MOD17, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of Photosynthetically Active Radiation (LAI/FPAR) 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 MOD17A3HGF in near-real time because it will be generated only at the end of a given year.

Known Issues

Version Description

The following changes and improvements were implemented for inputs to the MODIS Version 6.1 NPP data product: (1) 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, (2) A polarization correction has been applied to the L1B Reflective Solar Bands (RSB), and (3) The product uses Climatology Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) as back up to the operational LAI/FPAR.

Product Summary

Platforms
Terra
Instruments
MODIS
Projects
TERRA
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
500 Meters x 500 Meters
Spatial Reference System(s)
MODIS Sinusoidal Tiling System
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2001-01-01 to Present
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
C2565791034-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
7250
Processing Level
4
Published
Updated
Science Keywords
Photosynthesis ,
Primary Production ,
Vegetation Productivity

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., & Zhao, M. (2021). MODIS/Terra Net Primary Production Gap-Filled Yearly L4 Global 500m SIN Grid V061 [Dataset]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD17A3HGF.061 Date Accessed: 2026-07-22

File Naming Convention

MOD17A3HGF.A2024001.h17v10.061.2025011052834.hdf

The file name begins with the Product Short Name (MOD17A3HGF) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2024001), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h17v10), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025011052834), and the Data Format (hdf).

Documents

USER'S GUIDE

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

PRODUCT QUALITY ASSESSMENT

SCIENCE DATA PRODUCT VALIDATION

GENERAL DOCUMENTATION

Publications Citing This Dataset

Filters
Title Year Author Topic
The land degradation estimation remote sensing methods using RUE-adjusted NDVI Shelestov, Andrii, Shumilo, Leonid, Bilokonska, Yuliia, Lavreniuk, Alla Photosynthesis, Primary Production, Vegetation Productivity
Spatial Assessment of Para Rubber (Hevea brasiliensis) above Ground Biomass Potentials in Songkhla Province, Southern Thailand Simon, John Nyandansobi, Nuthammachot, Narissara, Titseesang, Teerawet, Okpara, Kingsley Ezechukwu, Techato, Kuaanan Evapotranspiration, Photosynthesis, Primary Production, Latent Heat Flux, Vegetation Productivity
Spatial, Phenological, and Inter-Annual Variations of Gross Primary Ma, Dujuan, Wu, Xiaodan, Ma, Xuanlong, Wang, Jingping, Lin, Xingwen, Mu, Cuicui Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Role of land surface parameter change in dust emission and impacts of dust on climate in Southwest Asia Darvishi Boloorani, Ali, Najafi, Mohammad Saeed, Mirzaie, Saham Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity, Plant Phenology, Enhanced Vegetation Index (EVI)
Variations in the aboveground phytomass in northern Eurasia in the 21st century Tishkov, A. A., Krenke, A. N., Titova, S. V., Belonovskaya, E. A., Tsarevskaya, N. G. Canopy Characteristics, Evergreen Vegetation, Crown, Deciduous Vegetation, Leaf Characteristics, Vegetation Cover, Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity, Evapotranspiration, Latent Heat Flux
Changes of lake organic carbon sinks from closed basins since the Last Glacial Maximum and quantitative evaluation of human impacts Li, Yu, Zhang, Xinzhong, Xu, Lingmei, Zhang, Yuxin, Ye, Wangting, Li, Yichan Photosynthesis, Primary Production, Vegetation Productivity, Carbon, Cation Exchange Capacity, Organic Matter
Climate, fuel, and land use shaped the spatial pattern of wildfire in Californias Sierra Nevada Chen, Bin, Jin, Yufang, Scaduto, Erica, Moritz, Max A., Goulden, Michael L., Randerson, James T. Canopy Characteristics, Evergreen Vegetation, Crown, Deciduous Vegetation, Leaf Characteristics, Vegetation Cover, Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Disturbance type and species life history predict mammal responses to humans Suraci, Justin P., Gaynor, Kaitlyn M., Allen, Maximilian L., Alexander, Peter, Brashares, Justin S., CendejasZarelli, Sara, Crooks, Kevin, Elbroch, L. Mark, Forrester, Tavis, Green, Austin M., Haight, Jeffrey, Harris, Nyeema C., Hebblewhite, Mark, Isbell, Forest, Johnston, Barbara, Kays, Roland, Lendrum, Patrick E., Lewis, Jesse S., McInturff, Alex, McShea, William, Murphy, Thomas W., Palmer, Meredith S., Parsons, Arielle, Parsons, Mitchell A., Pendergast, Mary E., Pekins, Charles, Prugh, Laura R., SagerFradkin, Kimberly A., Schuttler, Stephanie, Sekercioglu, Cagan H., Shepherd, Brenda, Whipple, Laura, Whittington, Jesse, Wittemyer, George, Wilmers, Christopher C. Photosynthesis, Primary Production, Vegetation Productivity
Daily estimation of gross primary production under all sky using a light Wang, Yipu, Li, Rui, Hu, Jiheng, Fu, Yuyun, Duan, Jiawei, Cheng, Yuanxi Photosynthesis, Primary Production, Vegetation Productivity, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Land Use/Land Cover Classification
Convergence of global hydrothermal pattern leads to an increase in vegetation net primary productivity Li, Chuanhua, Zhou, Min, Dou, Tianbao, Zhu, Tongbin, Yin, Huanhuan, Liu, Lihui Photosynthesis, Primary Production, Vegetation Productivity
Driving factors and decoupling effect of carbon footprint pressure in China: Based on net primary production Huang, Yuan, Yu, Qiang, Wang, Ruirui Photosynthesis, Primary Production, Vegetation Productivity
Inspecting the FoodWater Nexus in the Ogallala Aquifer Region Using Satellite Remote Sensing Time Series Zhou, Yuting, Gholizadeh, Hamed, LaVanchy, G. Thomas, Hasan, Emad Photosynthesis, Primary Production, Vegetation Productivity, Terrestrial Water Storage
Spatio-temporal evolution, future trend and phenology regularity of net primary productivity of forests in Northeast China Wang, Chunli, Jiang, Qunou, Deng, Xiangzheng, Lv, Kexin, Zhang, Zhonghui Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Photosynthesis, Primary Production, Vegetation Productivity, Reflectance
Study on global burned forest areas based on Landsat data Zhang, Zhaoming, Long, Tengfei, He, Guojin, Wei, Mingyue, Tang, Chao, Wang, Wei, Wang, Guizhou, She, Wenqing, Zhang, Xiaomei Photosynthesis, Primary Production, Vegetation Productivity
An evaluation of eight machine learning regression algorithms for forest aboveground biomass estimation from multiple satellite data products Zhang, Yuzhen, Ma, Jun, Liang, Shunlin, Li, Xisheng, Li, Manyao Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Simulating rangeland ecosystems with g-rangeModel description and evaluation at global and site scales Sircely, Jason, Conant, Richard T., Boone, Randall B. Canopy Characteristics, Evergreen Vegetation, Crown, Deciduous Vegetation, Leaf Characteristics, Vegetation Cover, Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity, Normalized Difference Vegetation Index (NDVI)
Annual gross primary production from vegetation indicesA theoretically sound approach Gilabert, Maria, Sanchez-Ruiz, Sergio, Moreno, Alvaro Photosynthesis, Primary Production, Vegetation Productivity, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI)
A cluster of CO2 change characteristics with GOSAT observations for viewing the spatial pattern of CO2 emission and absorption Liu, Da, Lei, Liping, Guo, Lijie, Zeng, Zhao-Cheng Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
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