MODIS Terra Gross Primary Productivity Gap-Filled 8-Day L4 Global 500m
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language: EN
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keyword: modis
keyword: 500m
keyword: Vegetation
keyword: Carbon
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modified: 2026-08-08T00:00:00.000Z
was generated by: Activity
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keyword: Gross Primary Productivity
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description: The MODIS Terra MOD17A2HGF Version 6.1 product provides a gap-filled 8-day cumulative composite of Gross Primary Productivity (GPP) at 500 m spatial resolution. The dataset is based on the radiation use efficiency concept and can be used as input for models analyzing terrestrial energy balance, carbon and water cycles, and vegetation biogeochemistry. In addition to GPP, the product includes Net Photosynthesis (PSN), calculated as GPP minus Maintenance Respiration (MR), along with a quality control (QC) layer providing quality information for both variables. The gap-filled product is generated at the end of each year once the complete annual MOD15A2H LAI/FPAR dataset becomes available. Poor-quality LAI/FPAR inputs are identified using quality control flags and replaced through linear interpolation to improve data consistency. Consequently, the dataset is not available in near-real time and is produced only after the completion of the full yearly dataset.
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keyword: GPP

CatalogRecord
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modified: 2026-08-08T01:00:56Z
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https://fedeo.ceos.org/collections/modis-terra-mod17a2hgf
type: CatalogRecord
conforms to: ISO19139-2

EARTH SCIENCE>BIOSPHERE>VEGETATION
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

TERRA
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

MODIS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments

MODIS
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments
type: Concept

Terra
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

EARTH SCIENCE>AGRICULTURE>SOILS>CARBON
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords