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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
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 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD17A3HGF.061 Date Accessed: 2026-05-28

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
Towards an ecosystem capacity to stabilise organic carbon in soils Poeplau, Christopher, Dechow, Rene, Begill, Neha, Don, Axel Photosynthesis, Primary Production, Vegetation Productivity
The synergy between protected area effectiveness and economic growth Li, Binbin V., Wu, Shuyao, Pimm, Stuart L., Cui, Jingbo Land Use/Land Cover, Anthropogenic/Human Influenced Ecosystems, Sustainability, Photosynthesis, Primary Production, Vegetation Productivity
The Role of Climate, Mineralogy and Stable Aggregates for Soil Organic Wasner, Daniel, Abramoff, Rose, Griepentrog, Marco, Venegas, Erick Zagal, Boeckx, Pascal, Doetterl, Sebastian Photosynthesis, Primary Production, Vegetation Productivity
Productivity and Carbon Sequestration of Pinus sylvestris L. Ribbon Forests in the Dry Steppe of Western Siberia According to Dendrochronology and MODIS Satellite ... Rygalova, N. V., Mordvin, E. Yu., Bondarovich, A. A. Photosynthesis, Primary Production, Vegetation Productivity
Productivity of Coniferous Forests Evaluated by Remote Sensing and Field-Based Models Kusbach jun, A, Krejza, J, Homolova, L, Fischer, M, Janoutova, R, Horacek, P Photosynthesis, Primary Production, Vegetation Productivity, RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps
Pyrogeography in flux: Reorganization of Australian fire regimes in a Cunningham, Calum X., Williamson, Grant J., Nolan, Rachael H., Teckentrup, Lina, Boer, Matthias M., Bowman, David M. J. S. Fire Ecology, Biomass Burning, Wildfires, Fire Occurrence, Burned Area, Photosynthesis, Primary Production, Vegetation Productivity, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI)
Rain use efficiency gradients across Australian ecosystems Liu, Zhongli, Skrzypek, Grzegorz, Batelaan, Okke, Guan, Huade Photosynthesis, Primary Production, Vegetation Productivity
Quantifying the Contributions of Vegetation Dynamics and Climate Factors Liu, Kaixuan, Wang, Xufeng, Wang, Haibo Photosynthesis, Primary Production, Vegetation Productivity
Quantifying the impact of key factors on the carbon mitigation potential Gregor, Konstantin, Krause, Andreas, Reyer, Christopher P. O., Knoke, Thomas, Meyer, Benjamin F., Suvanto, Susanne, Rammig, Anja Photosynthesis, Primary Production, Vegetation Productivity
Quantifying the relative importance of influencing factors on NPP in Hengduan Mountains of the Tibetan Plateau from 2002 to 2021: A Dominance Analysis Long, Boyin, Zeng, Changli, Zhou, Tao, Yang, Zhihan, Rao, Fuping, Li, Jingji, Chen, Guo, Tang, Xiaolu Land Use/Land Cover Classification, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Photosynthesis, Primary Production, Vegetation Productivity, Biomass Dynamics, Biomass
Context dependency in interference competition among birds in an Lindenmayer, D. B., Blanchard, W., Evans, M. J., Beggs, R., Lavery, T., Florance, D., Crane, C., Smith, D., Siegrist, A., Lang, E., Scheele, B. C. Photosynthesis, Primary Production, Vegetation Productivity
Contribution of vegetation restoration to carbon sequestration driven by Zhu, Meng, Zhou, Zhongfa, Feng, Qing, Wu, Xiaopiao, Liu, Rongping, Wu, Guijie, Zheng, Jiajia, Luo, Wanlin Photosynthesis, Primary Production, Vegetation Productivity
Density of wild honey bee, <i>Apis mellifera</i>, colonies worldwide Visick, Oliver D., Ratnieks, Francis L. W. Photosynthesis, Primary Production, Vegetation Productivity
Evaluating temporal-spatial variations of wetland ecosystem service value in China during 19902020 from the donor side based on cosmic exergy Xu, Yimeng, Xie, Yongjuan, Wu, Xudong, Xie, Yitian, Zhang, Tianyuan, Zou, Zhixiao, Zhang, Rongtian, Zhang, Zhiqiang Photosynthesis, Primary Production, Vegetation Productivity
Evaluating Impacts of Opencast Stone Mining on Vegetation Primary Ranjan, Avinash Kumar, Parida, Bikash Ranjan, Dash, Jadunandan, Gorai, Amit Kumar Photosynthesis, Primary Production, Vegetation Productivity
Estimation of gross primary productivity of Indian Sundarbans mangrove Kumar, Tanumi, Das, Prabir Kumar Photosynthesis, Primary Production, Vegetation Productivity
Higher functional diversity improves modeling of Amazon forest carbon Rius, Bianca Fazio, Filho, Joao Paulo Darela, Fleischer, Katrin, Hofhansl, Florian, Blanco, Carolina Casagrande, Rammig, Anja, Domingues, Tomas Ferreira, Lapola, David Montenegro Photosynthesis, Primary Production, Vegetation Productivity
High-resolution assessment of the carrying capacity and utilization Zandler, Harald, Vanselow, Kim Andre, Poya Faryabi, Sorosh, Rajabi, Ali Madad, Ostrowski, Stephane RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM), Photosynthesis, Primary Production, Vegetation Productivity
Gridded livestock density database and spatial trends for Kazakhstan Kolluru, Venkatesh, John, Ranjeet, Saraf, Sakshi, Chen, Jiquan, Hankerson, Brett, Robinson, Sarah, Kussainova, Maira, Jain, Khushboo Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Human impacts on vegetation carbon sequestration capacity in the Qilian Zeng, Biao, Zhang, Fuguang, Cao, Ying, Shen, Yanqi, Meng, Zhenhua Photosynthesis, Primary Production, Vegetation Productivity
Human modification of land cover alters net primary productivity, species richness and their relationship Deng, Shuyu, Beale, Colin M., Platts, Philip J., Thomas, Chris D. Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Impacts of urban expansion on vegetation in drylands: A multiscale analysis based on the vegetation disturbance index Qi, Tao, Ren, Qiang, Zhang, Da, Lu, Wenlu, He, Chunyang Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Photosynthesis, Primary Production, Vegetation Productivity
Implications of CO2 emissions on the main land and forest uses in the Rossi, Fernando Saragosa, La Scala, Newton, Capristo-Silva, Guilherme Fernando, Della-Silva, Joao Lucas, Teodoro, Larissa Pereira Ribeiro, Almeida, Gabriel, Tiago, Auana Vicente, Teodoro, Paulo Eduardo, Silva Junior, Carlos Antonio da Photosynthesis, Primary Production, Vegetation Productivity
Integrated Management Facilitates Soil Carbon Storage in Non-Timber Chen, Jizhen, Huang, Zhilin, Xiao, Wenfa, Liu, Changfu, Zeng, Lixiong, Fan, Zihao, Shen, Chenchen Photosynthesis, Primary Production, Vegetation Productivity
Integrating presenceonly and presenceabsence data to model changes in species geographic ranges: An example in the Neotropics Grattarola, Florencia, Bowler, Diana E., Keil, Petr Land Use/Land Cover Classification, Canopy Characteristics, Evergreen Vegetation, Crown, Deciduous Vegetation, Leaf Characteristics, Vegetation Cover, Photosynthesis, Primary Production, Vegetation Productivity
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