Global Vegetation Indices from MODIS Terra Satellite

Global MODIS/Terra satellite data provides Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) values at a 0.05-degree resolution. The dataset is a cloud-free composite of 16-day 1-kilometer data, aggregated onto a Climate Modeling Grid with 3,600 rows and 7,200 columns. It is produced by LPCLOUD from NASA's Terra MODIS instrument.

Use Cases

• Analyze global vegetation health trends over time using the NDVI and EVI fields.
• Assess biomass sensitivity in high-density regions by comparing NDVI and EVI values.
• Validate land cover models using the VI QA, reflectance data, and angular information fields.
• Calculate spatial statistics for vegetation patterns using the mean, standard deviation, and number of used input pixels fields.

Strengths

• Provides two primary vegetation indices (NDVI and EVI) for continuity and improved sensitivity.
• Data is aggregated onto a global Climate Modeling Grid of 3,600 rows and 7,200 columns.
• Cloud-free spatial composites are derived from 16-day 1-kilometer source data.

Limitations

• Specific row count, column count, and temporal coverage are not provided in the input.
• Known issues exist, requiring users to consult external assessment websites.
• The dataset's update frequency and recency are unknown.

Provenance

Source

NASA Terra MODIS instrument, processed by LPCLOUD.

Collection Method

Cloud-free spatial composites of gridded 16-day 1-kilometer MOD13A2 data, projected onto a 0.05-degree geographic CMG.

Time Range

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Freshness

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Geography

Global coverage on a 0.05-degree Climate Modeling Grid.