PACE OCI Land Vegetation Indices: Near Real-time Satellite Data

NASA's Ocean Biology DAAC produces near real-time vegetation and land-surface indices from satellite observations. The LANDVI suite includes ten geophysical variables, such as NDVI, EVI, and indices for chlorophyll and carotenoid content. This data provides a snapshot from a single orbit but uses less-than-optimal ancillary inputs and calibration.

Use Cases

• Monitor vegetation health and stress based on the Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI)
• Assess plant pigment content based on chlorophyll and carotenoid indices (CIR, CAR, CCI)
• Detect water stress and snow cover based on the Normalized Difference Water Index (NDWI) and Normalized Difference Snow Index (NDSI)
• Analyze photochemical reflectance and anthocyanin levels based on the Photochemical Reflectance Index (PRI) and Anthocyanin Reflectance Index (MARI)

Strengths

• Provides near real-time data, offering a snapshot from a single orbit
• Includes ten distinct vegetation and land-surface indices, such as NDVI, EVI, and CCI
• Leverages hyperspectral-enabled indices for potentially detailed spectral analysis

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download
• Row count is unknown, which may limit suitability assessment
• The description states inputs and calibration are 'less than optimal' compared to standard products

Provenance

Source

NASA Ocean Biology DAAC (OB_CLOUD)

Collection Method

Derived from surface reflectance data from the PACE OCI instrument

Freshness

Near real-time

Geography

Regional coverage (specific regions not stated)