MODIS/Terra LAI/FPAR V061: Global Vegetation Biophysics at 500m

An 8-day composite dataset provides global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) measurements at a 500-meter pixel size. The Level 4 product from the Terra MODIS sensor includes primary science datasets for LAI and FPAR, along with quality layers and standard deviation values. It is designed for monitoring vegetation canopy structure and light absorption dynamics over time.

Use Cases

• Modeling carbon and water cycles based on LAI and FPAR inputs.
• Monitoring agricultural productivity and crop health using vegetation biophysical parameters.
• Assessing forest canopy structure and biomass from leaf area index measurements.
• Tracking seasonal and interannual vegetation dynamics from the 8-day composite time series.
• Validating ecosystem and land surface models with satellite-derived quality-controlled data.

Strengths

• Provides a long-term, standardized global record from the Terra MODIS sensor, a key instrument for Earth observation.
• Offers two core biophysical variables (LAI and FPAR) alongside quality assurance layers, which supports data reliability assessments.
• Features a consistent 500-meter spatial resolution and 8-day temporal compositing, balancing detail with global coverage.

Limitations

• Critical metadata such as exact row count, total size, and specific column names are not provided by any source platform.
• The dataset has known issues requiring users to consult an external quality assessment website for complete details.
• Sources show a conflict in update timestamps, with one listing a 'last updated' date in the future (2026-04-10), casting doubt on metadata accuracy.

Provenance

Source

LPCLOUD (NASA Land Processes Distributed Active Archive Center)

Collection Method

Satellite remote sensing via the MODIS instrument on the Terra platform, with algorithmic processing to generate Level 4 products.

Freshness

2026-04-10 00:09:54.684801

Geography

Global