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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
A global analysis of plant nutrient limitation affected by atmospheric nitrogen and phosphorous deposition Du, Lan, Tang, Lisong, Zheng, Xinjun, Li, Yan Photosynthesis, Primary Production, Vegetation Productivity
A novel framework for multiple thermokarst hazards risk assessment and controlling environmental factors analysis on the Qinghai-Tibet Plateau Lou, Peiqing, Wu, Tonghua, Yin, Guoan, Chen, Jie, Zhu, Xiaofan, Wu, Xiaodong, Li, Ren, Yang, Sizhong Land Use/Land Cover Classification, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Photosynthesis, Primary Production, Vegetation Productivity, Photosynthetically Active Radiation, Leaf Characteristics, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM)
Geographic range of plants drives long-term climate change Gurung, Khushboo, Field, Katie J., Batterman, Sarah A., Poulton, Simon W., Mills, Benjamin J. W. Photosynthesis, Primary Production, Vegetation Productivity
Global pattern of organic carbon pools in forest soils Zhang, Yuxue, Guo, Xiaowei, Chen, Longxue, Kuzyakov, Yakov, Wang, Ruzhen, Zhang, Haiyang, Han, Xingguo, Jiang, Yong, Sun, Osbert Jianxin Photosynthesis, Primary Production, Vegetation Productivity
Global Distributions of Reactive Iron and Aluminum Influence the Spatial Ren, Siyu, Wang, Chuankuan, Zhou, Zhenghu Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
External and internal driving forces of community and functional group stability in the forest mammal community She, Wen, Gu, Jiayin, Qi, Jinzhe, Liu, Shuyan, Yang, Xifu, Zhang, Zhibin, Jiang, Guangshun Photosynthesis, Primary Production, Vegetation Productivity
Extreme Climate as the Primary Control of Global Soil Organic Carbon Wei, Yucheng, Wang, Mingming, Viscarra Rossel, R. A., Chen, Hong, Luo, Zhongkui Canopy Characteristics, Evergreen Vegetation, Crown, Deciduous Vegetation, Leaf Characteristics, Vegetation Cover, Land Use/Land Cover Classification, Fire Occurrence, Surface Thermal Properties, Land Surface Temperature, THERMAL ANOMALIES, Emissivity, Vegetation Index, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM), Normalized Difference Vegetation Index (NDVI), RADAR IMAGERY, Photosynthesis, Primary Production, Vegetation Productivity
Big Earth Data in Support of the Sustainable Development Goals (2022)The Belt and Road Guo, Huadong Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Land Use/Land Cover Classification, Photosynthesis, Primary Production, Vegetation Productivity
Balancing Water Yield and Water Use Efficiency Between Planted and Natural Forests: A Global Analysis Sun, Shulan, Xiang, Wenhua, Ouyang, Shuai, Hu, Yanting, Peng, Changhui Photosynthesis, Primary Production, Vegetation Productivity
Assessment of global carbon dynamics due to mining-induced forest cover loss during 20002019 using satellite datasets Ranjan, Avinash Kumar, Gorai, Amit Kumar Photosynthesis, Primary Production, Vegetation Productivity
Long-term changes in herbivore community and vegetation impact of wild and domestic herbivores across Iceland Defourneaux, Mathilde, Barrio, Isabel C., Boulanger-Lapointe, Noemie, Speed, James D. M. Photosynthesis, Primary Production, Vegetation Productivity
Large-scale remote sensing reveals that tree mortality in Germany appears to be greater than previously expected Schiefer, Felix, Schmidtlein, Sebastian, Hartmann, Henrik, Schnabel, Florian, Kattenborn, Teja Photosynthesis, Primary Production, Vegetation Productivity
Landscape Character Identification and Zoning Management in Disaster-Prone Mountainous Areas: A Case Study of Mentougou District, Beijing Li, Shuchang, Zhang, Jinshi Photosynthesis, Primary Production, Vegetation Productivity
Modeling carbon dynamics from a heterogeneous watershed in the mid-Atlantic USA: A distributed-calibration and independent verification (DCIV) approach Tijjani, Sadiya B., Giri, Subhasis, Lathrop, Richard, Qi, Junyu, Karki, Ritesh, Schafer, Karina V.R., Kaplan, Marjorie B., Oleghe, Ewan E., Dhakal, Suman Photosynthesis, Primary Production, Vegetation Productivity
Satellite Gravimetry in Studies of Permafrost Thawing and Vegetation Productivity in the Cryolithozone Kharuk, V. I., Golyukov, A. S., Dvinskaya, M. L., Im, S. T., Petrov, I. A., Shvetsov, E. G. Photosynthesis, Primary Production, Vegetation Productivity
The geospatial modelling of vegetation carbon storage analysis in Google M, Arpitha, Ahmed, S A, N, Harishnaika Photosynthesis, Primary Production, Vegetation Productivity
The impact of drought time scales and characteristics on gross primary productivity in China from 2001 to 2020 Qiao, Longxin, Xia, Haoming Photosynthesis, Primary Production, Vegetation Productivity
Temporal Variation and Factors Influencing the Stability of NPP in Li, Ting, Hu, Jun, Li, Li, Liang, Jin, Li, Dandan, Liu, Qing Photosynthesis, Primary Production, Vegetation Productivity
Temperature, not net primary productivity, drives continental-scale variation in insect flight activity Tielens, Elske K, Kelly, Jeff Photosynthesis, Primary Production, Vegetation Productivity
Spatial patterns of soil organic carbon stocks and its controls in Chinese grassland ecosystems Li, Ya-Ting, Zhu, Chang-Ming, Yang, Ren-Min, Xu, Lu, Zhang, Xin Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Leaf Characteristics, Photosynthetically Active Radiation, Photosynthesis, Primary Production, Vegetation Productivity
Spatial ecological gradients and non-equilibrium niche construction dynamics in the Levantine Middle-Upper Palaeolithic transition Stutz, Aaron Jonas Photosynthesis, Primary Production, Vegetation Productivity, Land Surface Temperature, Emissivity
Response of vegetation carbon sequestration potential to the effectiveness of vegetation restoration in karst ecologically fragile areas in Guizhou, southwest ... Zhu, Meng, Zhou, Zhongfa, Wu, Xiaopiao, Liu, Rongping, Zheng, Jiajia, Wang, Jiale, Wan, Jiaxue Photosynthesis, Primary Production, Vegetation Productivity
SDG 2, Zero Hunger Guo, Huadong Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Photosynthesis, Primary Production, Vegetation Productivity
The TemporalSpatial Evolution Characteristics and Influential Factors of Carbon Imbalance in China Liu, Chao, Lei, Hongzhen, Zhang, Linjie Photosynthesis, Primary Production, Vegetation Productivity
Understanding drivers of the spatial variability of soil organic carbon Li, YaTing, Yang, RenMin, Zhang, Xin, Xu, Lu, Zhu, ChangMing Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Photosynthesis, Primary Production, Vegetation Productivity
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